Rhode Island

• Bristol 44001
  488 taxa Open ↗
• Kent 44003
  770 taxa Open ↗
• Newport 44005
  995 taxa Open ↗
• Providence 44007
  1,558 taxa Open ↗
• Washington 44009
  1,094 taxa Open ↗

Showing 1,877 of 1,877.

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  Abies balsamea (L.) Mill. Native ABBA

  balsam fir · Pinaceae 1 county
• 
  Abies balsamea (L.) Mill. var. balsamea Native ABBAB

  balsam fir · Pinaceae 1 county
• 
  Abutilon theophrasti Medik. Introduced ABTH

  velvetleaf · Malvaceae 1 county
• 
  Acalypha gracilens A. Gray Native ACGR2

  slender threeseed mercury · Euphorbiaceae 4 counties
• 
  Acalypha rhomboidea Raf. Native ACRH

  common threeseed mercury · Euphorbiaceae 1 county
• 
  Acalypha virginica L. Native ACVI

  Virginia threeseed mercury · Euphorbiaceae 2 counties
• 
  Acer negundo L. Native ACNE2

  boxelder · Aceraceae 3 counties
• 
  Acer pensylvanicum L. Native ACPE

  striped maple · Aceraceae 1 county
• 
  Acer platanoides L. Introduced ACPL

  Norway maple · Aceraceae 3 counties
• 
  Acer pseudoplatanus L. Introduced ACPS

  sycamore maple · Aceraceae 4 counties
• 
  Acer rubrum L. Native ACRU

  red maple · Aceraceae 5 counties
• 
  Acer saccharinum L. Native ACSA2

  silver maple · Aceraceae 2 counties
• 
  Acer saccharum Marshall Native ACSA3

  sugar maple · Aceraceae 1 county
• 
  Acer saccharum Marshall var. saccharum Native ACSAS

  sugar maple · Aceraceae 1 county
• 
  Acer spicatum Lam. Native ACSP2

  mountain maple · Aceraceae 1 county
• 
  Acer tataricum L. Introduced ACTA80

  tatarian maple · Aceraceae 1 county
• 
  Achillea millefolium L. Both ACMI2

  common yarrow · Asteraceae 5 counties
• 
  Acorus calamus L. Introduced ACCA4

  calamus · Acoraceae 4 counties
• 
  Actaea pachypoda Elliott Native ACPA

  white baneberry · Ranunculaceae 1 county
• 
  Actaea rubra (Aiton) Willd. Native ACRU2

  red baneberry · Ranunculaceae 2 counties
• 
  Actaea rubra (Aiton) Willd. ssp. rubra Native ACRUR2

  red baneberry · Ranunculaceae 2 counties
• 
  Adiantum pedatum L. Native ADPE

  northern maidenhair · Pteridaceae 2 counties
• 
  Adlumia fungosa (Aiton) Greene ex Britton, Sterns & Poggenb. Native ADFU

  allegheny vine · Fumariaceae 1 county
• 
  Aegopodium podagraria L. Introduced AEPO

  bishop's goutweed · Apiaceae 1 county
• 
  Aesculus hippocastanum L. Introduced AEHI

  horse chestnut · Hippocastanaceae 1 county
• 
  Aethusa cynapium L. Introduced AECY2

  fool's parsley · Apiaceae 2 counties
• 
  Agalinis acuta Pennell Native AGAC

  sandplain false foxglove · Scrophulariaceae 2 counties
• 
  Agalinis maritima (Raf.) Raf. Native AGMA3

  saltmarsh false foxglove · Scrophulariaceae 2 counties
• 
  Agalinis maritima (Raf.) Raf. var. maritima Native AGMAM

  saltmarsh false foxglove · Scrophulariaceae 2 counties
• 
  Agalinis purpurea (L.) Pennell Native AGPU5

  purple false foxglove · Scrophulariaceae 5 counties
• 
  Agalinis tenuifolia (Vahl) Raf. Native AGTE3

  slenderleaf false foxglove · Scrophulariaceae 1 county
• 
  Agalinis tenuifolia (Vahl) Raf. var. tenuifolia Native AGTET

  slenderleaf false foxglove · Scrophulariaceae 1 county
• 
  Ageratina altissima (L.) R.M. King & H. Rob. Native AGAL5

  white snakeroot · Asteraceae 1 county
• 
  Ageratina altissima (L.) R.M. King & H. Rob. var. altissima Native AGALA

  white snakeroot · Asteraceae 1 county
• 
  Ageratina aromatica (L.) Spach Native AGAR4

  lesser snakeroot · Asteraceae 1 county
• 
  Ageratina aromatica (L.) Spach var. aromatica Native AGARA

  lesser snakeroot · Asteraceae 1 county
• 
  Agrimonia gryposepala Wallr. Native AGGR2

  tall hairy agrimony · Rosaceae 3 counties
• 
  Agrimonia pubescens Wallr. Native AGPU

  soft agrimony · Rosaceae 1 county
• 
  Agrimonia striata Michx. Native AGST

  roadside agrimony · Rosaceae 1 county
• 
  Agrostemma githago L. Introduced AGGI

  common corncockle · Caryophyllaceae 2 counties
• 
  Agrostis canina L. Native AGCA4

  velvet bentgrass · Poaceae 1 county
• 
  Agrostis capillaris L. Introduced AGCA5

  colonial bentgrass · Poaceae 4 counties
• 
  Agrostis gigantea Roth Introduced AGGI2

  redtop · Poaceae 5 counties
• 
  Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. Native AGHY

  winter bentgrass · Poaceae 4 counties
• 
  Agrostis perennans (Walter) Tuck. Native AGPE

  upland bentgrass · Poaceae 3 counties
• 
  Agrostis scabra Willd. Native AGSC5

  rough bentgrass · Poaceae 3 counties
• 
  Ailanthus altissima (Mill.) Swingle Introduced AIAL

  tree of heaven · Simaroubaceae 4 counties
• 
  Ajuga genevensis L. Introduced AJGE

  blue bugle · Lamiaceae 1 county
• 
  Alcea rosea L. Introduced ALRO3

  hollyhock · Malvaceae 2 counties
• 
  Aletris farinosa L. Native ALFA2

  white colicroot · Liliaceae 4 counties
• 
  Alisma subcordatum Raf. Native ALSU

  American water plantain · Alismataceae 3 counties
• 
  Allium canadense L. Native ALCA3

  meadow garlic · Liliaceae 2 counties
• 
  Allium canadense L. var. canadense Native ALCAC

  meadow garlic · Liliaceae 2 counties
• 
  Allium schoenoprasum L. Both ALSC

  wild chives · Liliaceae 2 counties
• 
  Allium schoenoprasum L. var. schoenoprasum Introduced ALSCS2

  wild chives · Liliaceae 2 counties
• 
  Allium tricoccum Aiton Native ALTR3

  ramp · Liliaceae 1 county
• 
  Allium vineale L. Introduced ALVI

  wild garlic · Liliaceae 3 counties
• 
  Allium vineale L. ssp. vineale Introduced ALVIV

  wild garlic · Liliaceae 3 counties
• 
  Alnus incana (L.) Moench Native ALIN2

  gray alder · Betulaceae 3 counties
• 
  Alnus incana (L.) Moench ssp. rugosa (Du Roi) R.T. Clausen Native ALINR

  speckled alder · Betulaceae 3 counties
• 
  Alnus serrulata (Aiton) Willd. Native ALSE2

  hazel alder · Betulaceae 5 counties
• 
  Alopecurus geniculatus L. Introduced ALGE2

  water foxtail · Poaceae 1 county
• 
  Alopecurus geniculatus L. var. geniculatus Introduced ALGEG4

  water foxtail · Poaceae 1 county
• 
  Alopecurus pratensis L. Introduced ALPR3

  meadow foxtail · Poaceae 2 counties
• 
  Alyssum alyssoides (L.) L. Introduced ALAL3

  pale madwort · Brassicaceae 1 county
• 
  Amaranthus albus L. Introduced AMAL

  prostrate pigweed · Amaranthaceae 3 counties
• 
  Amaranthus blitoides S. Watson Introduced AMBL

  mat amaranth · Amaranthaceae 2 counties
• 
  Amaranthus cannabinus (L.) Sauer Native AMCA2

  tidalmarsh amaranth · Amaranthaceae 2 counties
• 
  Amaranthus cruentus L. Introduced AMCR4

  red amaranth · Amaranthaceae 1 county
• 
  Amaranthus hybridus L. Native AMHY

  slim amaranth · Amaranthaceae 2 counties
• 
  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae 3 counties
• 
  Amaranthus spinosus L. Native AMSP

  spiny amaranth · Amaranthaceae 1 county
• 
  Ambrosia artemisiifolia L. Both AMAR2

  annual ragweed · Asteraceae 4 counties
• 
  Ambrosia artemisiifolia L. var. elatior (L.) Descourtils Introduced AMARE

  annual ragweed · Asteraceae 4 counties
• 
  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae 1 county
• 
  Ambrosia trifida L. var. trifida Native AMTRT2

  great ragweed · Asteraceae 1 county
• 
  Amelanchier arborea (Michx. f.) Fernald Native AMAR3

  common serviceberry · Rosaceae 5 counties
• 
  Amelanchier arborea (Michx. f.) Fernald var. arborea Native AMARA4

  common serviceberry · Rosaceae 5 counties
• 
  Amelanchier canadensis (L.) Medik. Native AMCA4

  Canadian serviceberry · Rosaceae 5 counties
• 
  Amelanchier stolonifera Wiegand Native AMST80

  running serviceberry · Rosaceae 1 county
• 
  Ammophila breviligulata Fernald Native AMBR

  American beachgrass · Poaceae 2 counties
• 
  Amorpha fruticosa L. Native AMFR

  false indigo bush · Fabaceae 1 county
• 
  Amphicarpaea bracteata (L.) Fernald Native AMBR2

  American hogpeanut · Fabaceae 4 counties
• 
  Anagallis arvensis L. Introduced ANAR

  scarlet pimpernel · Primulaceae 3 counties
• 
  Anagallis arvensis L. ssp. arvensis Introduced ANARA7

  scarlet pimpernel · Primulaceae 3 counties
• 
  Anaphalis margaritacea (L.) Benth. Native ANMA

  western pearly everlasting · Asteraceae 3 counties
• 
  Andromeda polifolia L. Native ANPO

  bog rosemary · Ericaceae 1 county
• 
  Andromeda polifolia L. var. glaucophylla (Link) DC. Native ANPOG

  bog rosemary · Ericaceae 1 county
• 
  Andropogon gerardii Vitman Native ANGE

  big bluestem · Poaceae 4 counties
• 
  Andropogon virginicus L. Native ANVI2

  broomsedge bluestem · Poaceae 3 counties
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  Andropogon virginicus L. var. virginicus Native ANVIV

  broomsedge bluestem · Poaceae 3 counties
• 
  Anemone cylindrica A. Gray Native ANCY

  candle anemone · Ranunculaceae 3 counties
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  Anemone quinquefolia L. Native ANQU

  wood anemone · Ranunculaceae 5 counties
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  Anemone quinquefolia L. var. quinquefolia Native ANQUQ

  nightcaps · Ranunculaceae 5 counties
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  Anemone virginiana L. Native ANVI3

  tall thimbleweed · Ranunculaceae 1 county
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  Anemone virginiana L. var. virginiana Native ANVIV2

  tall thimbleweed · Ranunculaceae 1 county
• 
  Anethum graveolens L. Introduced ANGR2

  dill · Apiaceae 2 counties
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  Angelica atropurpurea L. Native ANAT

  purplestem angelica · Apiaceae 1 county
• 
  Angelica lucida L. Native ANLU

  seacoast angelica · Apiaceae 2 counties
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  Antennaria howellii Greene Native ANHO

  Howell's pussytoes · Asteraceae 4 counties
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  Antennaria howellii Greene ssp. canadensis (Greene) Bayer Native ANHOC

  Canadian pussytoes · Asteraceae 1 county
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  Antennaria howellii Greene ssp. neodioica (Greene) Bayer Native ANHON

  Howell's pussytoes · Asteraceae 4 counties
• ⚘
  Antennaria neglecta Greene Native ANNE

  field pussytoes · Asteraceae 1 county
• 
  Antennaria parlinii Fernald Native ANPA9

  Parlin's pussytoes · Asteraceae 2 counties
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  Antennaria parlinii Fernald ssp. fallax (Greene) Bayer & Stebbins Native ANPAF

  Parlin's pussytoes · Asteraceae 2 counties
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  Antennaria plantaginifolia (L.) Richardson Native ANPL

  woman's tobacco · Asteraceae 3 counties
• 
  Anthemis arvensis L. Introduced ANAR6

  corn chamomile · Asteraceae 2 counties
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  Anthemis cotula L. Introduced ANCO2

  stinking chamomile · Asteraceae 4 counties
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  Anthoxanthum odoratum L. Introduced ANOD

  sweet vernalgrass · Poaceae 5 counties
• 
  Anthoxanthum odoratum L. ssp. odoratum Introduced ANODO2

  sweet vernalgrass · Poaceae 5 counties
• 
  Anthriscus sylvestris (L.) Hoffm. Introduced ANSY

  wild chervil · Apiaceae 1 county
• 
  Apios americana Medik. Native APAM

  groundnut · Fabaceae 4 counties
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  Apocynum androsaemifolium L. Native APAN2

  spreading dogbane · Apocynaceae 4 counties
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  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae 3 counties
• ⚘
  Apocynum ×floribundum Greene (pro sp.) [androsaemifolium × cannabinum] Native APFL

  Apocynaceae 4 counties
• 
  Aquilegia canadensis L. Native AQCA

  red columbine · Ranunculaceae 5 counties
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  Aquilegia vulgaris L. Introduced AQVU

  European columbine · Ranunculaceae 1 county
• 
  Arabidopsis thaliana (L.) Heynh. Introduced ARTH

  mouseear cress · Brassicaceae 2 counties
• 
  Arabis canadensis L. Native ARCA

  sicklepod · Brassicaceae 1 county
• 
  Arabis drummondii A. Gray Native ARDR

  Drummond's rockcress · Brassicaceae 1 county
• 
  Aralia hispida Vent. Native ARHI2

  bristly sarsaparilla · Araliaceae 2 counties
• 
  Aralia nudicaulis L. Native ARNU2

  wild sarsaparilla · Araliaceae 4 counties
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  Aralia racemosa L. Native ARRA

  American spikenard · Araliaceae 1 county
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  Aralia racemosa L. ssp. racemosa Native ARRAR

  American spikenard · Araliaceae 1 county
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  Aralia spinosa L. Native ARSP2

  devil's walkingstick · Araliaceae 1 county
• 
  Arceuthobium pusillum Peck Native ARPU3

  eastern dwarf mistletoe · Viscaceae 1 county
• 
  Arctium lappa L. Introduced ARLA3

  greater burdock · Asteraceae 1 county
• 
  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae 3 counties
• 
  Arctostaphylos uva-ursi (L.) Spreng. Native ARUV

  kinnikinnick · Ericaceae 3 counties
• 
  Arenaria serpyllifolia L. Introduced ARSE2

  thymeleaf sandwort · Caryophyllaceae 4 counties
• 
  Arethusa bulbosa L. Native ARBU

  dragon's mouth · Orchidaceae 2 counties
• 
  Argentina anserina (L.) Rydb. Native ARAN7

  silverweed cinquefoil · Rosaceae 5 counties
• 
  Arisaema triphyllum (L.) Schott Native ARTR

  Jack in the pulpit · Araceae 4 counties
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  Aristida dichotoma Michx. Native ARDI4

  churchmouse threeawn · Poaceae 4 counties
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  Aristida dichotoma Michx. var. dichotoma Native ARDID

  churchmouse threeawn · Poaceae 4 counties
• 
  Aristida oligantha Michx. Native AROL

  prairie threeawn · Poaceae 2 counties
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  Aristida purpurascens Poir. Native ARPU8

  arrowfeather threeawn · Poaceae 2 counties
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  Aristida purpurascens Poir. var. purpurascens Native ARPUP4

  arrowfeather threeawn · Poaceae 2 counties
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  Armoracia rusticana G. Gaertn., B. Mey. & Scherb. Introduced ARRU4

  horseradish · Brassicaceae 2 counties
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  Aronia arbutifolia (L.) Pers. Native ARAR7

  red chokeberry · Rosaceae 3 counties
• 
  Aronia melanocarpa (Michx.) Elliott Native ARME6

  black chokeberry · Rosaceae 4 counties
• ⚘
  Aronia ×prunifolia (Marshall) Rehder, (pro sp.) [arbutifolia × melanocarpa] Native ARPR2

  purple chokeberry · Rosaceae 5 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

  tall oatgrass · Poaceae 3 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl var. elatius Introduced ARELE

  tall oatgrass · Poaceae 3 counties
• 
  Artemisia biennis Willd. Both ARBI2

  biennial wormwood · Asteraceae 1 county
• 
  Artemisia biennis Willd. var. biennis Introduced ARBIB

  biennial wormwood · Asteraceae 1 county
• 
  Artemisia campestris L. Native ARCA12

  field sagewort · Asteraceae 4 counties
• 
  Artemisia campestris L. ssp. caudata (Michx.) H.M. Hall & Clem. Native ARCAC

  field sagewort · Asteraceae 4 counties
• 
  Artemisia carruthii Alph. Wood ex Carruth. Native ARCA14

  Carruth's sagewort · Asteraceae 1 county
• 
  Artemisia ludoviciana Nutt. Both ARLU

  white sagebrush · Asteraceae 1 county
• 
  Artemisia ludoviciana Nutt. ssp. ludoviciana Native ARLUL2

  white sagebrush · Asteraceae 1 county
• 
  Artemisia pontica L. Introduced ARPO4

  Roman wormwood · Asteraceae 1 county
• 
  Artemisia stelleriana Besser Introduced ARST6

  oldwoman · Asteraceae 3 counties
• 
  Asclepias amplexicaulis Sm. Native ASAM

  clasping milkweed · Asclepiadaceae 2 counties
• 
  Asclepias exaltata L. Native ASEX

  poke milkweed · Asclepiadaceae 2 counties
• 
  Asclepias incarnata L. Native ASIN

  swamp milkweed · Asclepiadaceae 5 counties
• 
  Asclepias incarnata L. ssp. pulchra (Ehrh. ex Willd.) Woodson Native ASINP2

  swamp milkweed · Asclepiadaceae 5 counties
• 
  Asclepias purpurascens L. Native ASPU2

  purple milkweed · Asclepiadaceae 1 county
• 
  Asclepias quadrifolia Jacq. Native ASQU

  fourleaf milkweed · Asclepiadaceae 1 county
• 
  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae 2 counties
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  Asclepias tuberosa L. ssp. tuberosa Native ASTUT2

  butterfly milkweed · Asclepiadaceae 2 counties
• 
  Asclepias verticillata L. Native ASVE

  whorled milkweed · Asclepiadaceae 3 counties
• 
  Asparagus officinalis L. Introduced ASOF

  garden asparagus · Liliaceae 4 counties
• 
  Asplenium platyneuron (L.) Britton, Sterns & Poggenb. Native ASPL

  ebony spleenwort · Aspleniaceae 4 counties
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  Asplenium platyneuron (L.) Britton, Sterns & Poggenb. var. platyneuron Native ASPLP

  ebony spleenwort · Aspleniaceae 4 counties
• 
  Asplenium rhizophyllum L. Native ASRH2

  walking fern · Aspleniaceae 1 county
• 
  Asplenium trichomanes L. Native ASTR2

  maidenhair spleenwort · Aspleniaceae 3 counties
• 
  Asplenium trichomanes L. ssp. trichomanes Native ASTRT

  maidenhair spleenwort · Aspleniaceae 3 counties
• 
  Aster tataricus L. f. Introduced ASTA

  Tatarian aster · Asteraceae 1 county
• 
  Astilbe japonica (C. Morren & Decne.) A. Gray Introduced ASJA2

  florist's spiraea · Saxifragaceae 1 county
• 
  Athyrium filix-femina (L.) Roth Native ATFI

  common ladyfern · Dryopteridaceae 5 counties
• 
  Atriplex cristata Humb. & Bonpl. ex Willd. Native ATCR2

  crested saltbush · Chenopodiaceae 3 counties
• 
  Atriplex patula L. Introduced ATPA4

  spear saltbush · Chenopodiaceae 3 counties
• 
  Atriplex prostrata Bouchér ex DC. Native ATPR

  triangle orache · Chenopodiaceae 5 counties
• 
  Atriplex rosea L. Introduced ATRO

  tumbling saltweed · Chenopodiaceae 1 county
• 
  Aureolaria flava (L.) Farw. Native AUFL

  smooth yellow false foxglove · Scrophulariaceae 2 counties
• 
  Aureolaria flava (L.) Farw. var. flava Native AUFLF

  smooth yellow false foxglove · Scrophulariaceae 2 counties
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  Aureolaria pedicularia (L.) Raf. Native AUPE2

  fernleaf yellow false foxglove · Scrophulariaceae 2 counties
• 
  Aureolaria pedicularia (L.) Raf. var. pedicularia Native AUPEP

  fernleaf yellow false foxglove · Scrophulariaceae 2 counties
• 
  Aureolaria virginica (L.) Pennell Native AUVI

  downy yellow false foxglove · Scrophulariaceae 1 county
• 
  Avena sativa L. Introduced AVSA

  common oat · Poaceae 2 counties
• 
  Baccharis halimifolia L. Native BAHA

  eastern baccharis · Asteraceae 1 county
• 
  Baptisia tinctoria (L.) R. Br. Native BATI

  horseflyweed · Fabaceae 4 counties
• 
  Barbarea verna (Mill.) Asch. Introduced BAVE

  early yellowrocket · Brassicaceae 1 county
• 
  Barbarea vulgaris W.T. Aiton Introduced BAVU

  garden yellowrocket · Brassicaceae 4 counties
• 
  Bartonia paniculata (Michx.) Muhl. Native BAPA2

  twining screwstem · Gentianaceae 1 county
• 
  Bartonia virginica (L.) Britton, Sterns & Poggenb. Native BAVI3

  yellow screwstem · Gentianaceae 4 counties
• 
  Berberis thunbergii DC. Introduced BETH

  Japanese barberry · Berberidaceae 3 counties
• 
  Berberis vulgaris L. Introduced BEVU

  common barberry · Berberidaceae 5 counties
• 
  Berteroa incana (L.) DC. Introduced BEIN2

  hoary alyssum · Brassicaceae 3 counties
• 
  Betula alleghaniensis Britton Native BEAL2

  yellow birch · Betulaceae 4 counties
• 
  Betula lenta L. Native BELE

  sweet birch · Betulaceae 2 counties
• 
  Betula papyrifera Marshall Native BEPA

  paper birch · Betulaceae 3 counties
• 
  Betula papyrifera Marshall var. papyrifera Native BEPAP

  paper birch · Betulaceae 3 counties
• 
  Betula populifolia Marshall Native BEPO

  gray birch · Betulaceae 5 counties
• ⚘
  Betula ×caerulea Blanch. (pro nm.) var. grandis Blanch. (pro nm.) Native BECAG

  big blue birch · Betulaceae 1 county
• ⚘
  Betula ×caerulea Blanch. (pro sp.) [populifolia × papyrifera var. cordifolia] Native BECA4

  blue birch · Betulaceae 1 county
• 
  Bidens beckii Torr. ex Spreng. Native BIBE2

  Beck's water-marigold · Asteraceae 1 county
• 
  Bidens cernua L. Native BICE

  nodding beggartick · Asteraceae 2 counties
• 
  Bidens coronata (L.) Britton Native BICO

  crowned beggarticks · Asteraceae 1 county
• 
  Bidens discoidea (Torr. & A. Gray) Britton Native BIDI

  small beggarticks · Asteraceae 5 counties
• 
  Bidens eatonii Fernald Native BIEA

  Eaton's beggarticks · Asteraceae 1 county
• 
  Bidens frondosa L. Native BIFR

  devil's beggartick · Asteraceae 4 counties
• 
  Bidens tripartita L. Native BITR

  threelobe beggarticks · Asteraceae 4 counties
• 
  Boehmeria cylindrica (L.) Sw. Native BOCY

  smallspike false nettle · Urticaceae 4 counties
• 
  Bolboschoenus maritimus (L.) Palla Native BOMA7

  cosmopolitan bulrush · Cyperaceae 4 counties
• 
  Bolboschoenus robustus (Pursh) Soják Native BORO5

  sturdy bulrush · Cyperaceae 2 counties
• 
  Boltonia asteroides (L.) L'Hér. Native BOAS

  white doll's daisy · Asteraceae 2 counties
• 
  Borago officinalis L. Introduced BOOF

  common borage · Boraginaceae 1 county
• 
  Botrychium dissectum Spreng. Native BODI2

  cutleaf grapefern · Ophioglossaceae 5 counties
• 
  Botrychium lanceolatum (S.G. Gmel.) Angstr. Native BOLA

  lanceleaf grapefern · Ophioglossaceae 1 county
• 
  Botrychium lanceolatum (S.G. Gmel.) Angstr. var. angustisegmentum Pease & A.H. Moore Native BOLAA2

  lanceleaf grapefern · Ophioglossaceae 1 county
• 
  Botrychium matricariifolium (A. Braun ex Dowell) A. Braun ex W.D.J. Koch Native BOMA2

  matricary grapefern · Ophioglossaceae 1 county
• 
  Botrychium virginianum (L.) Sw. Native BOVI

  rattlesnake fern · Ophioglossaceae 2 counties
• 
  Brachyelytrum erectum (Schreb. ex Spreng.) P. Beauv. Native BRER2

  bearded shorthusk · Poaceae 1 county
• 
  Brasenia schreberi J.F. Gmel. Native BRSC

  watershield · Cabombaceae 2 counties
• 
  Brassica juncea (L.) Czern. Introduced BRJU

  brown mustard · Brassicaceae 1 county
• 
  Brassica nigra (L.) W.D.J. Koch Introduced BRNI

  black mustard · Brassicaceae 2 counties
• 
  Brassica oleracea L. Introduced BROL

  cabbage · Brassicaceae 1 county
• 
  Brassica rapa L. Introduced BRRA

  field mustard · Brassicaceae 2 counties
• 
  Brassica rapa L. var. rapa Introduced BRRAR

  field mustard · Brassicaceae 2 counties
• 
  Bromus arvensis L. Introduced BRAR5

  field brome · Poaceae 2 counties
• 
  Bromus ciliatus L. Native BRCI2

  fringed brome · Poaceae 1 county
• 
  Bromus ciliatus L. var. ciliatus Native BRCIC3

  fringed brome · Poaceae 1 county
• 
  Bromus hordeaceus L. Introduced BRHO2

  soft brome · Poaceae 2 counties
• 
  Bromus hordeaceus L. ssp. hordeaceus Introduced BRHOH

  soft brome · Poaceae 2 counties
• 
  Bromus inermis Leyss. Both BRIN2

  smooth brome · Poaceae 3 counties
• 
  Bromus inermis Leyss. ssp. inermis Introduced BRINI

  smooth brome · Poaceae 3 counties
• 
  Bromus inermis Leyss. ssp. inermis var. inermis Introduced BRINI2

  smooth brome · Poaceae 3 counties
• 
  Bromus racemosus L. Introduced BRRA2

  bald brome · Poaceae 4 counties
• 
  Bromus secalinus L. Introduced BRSE

  rye brome · Poaceae 2 counties
• 
  Bromus secalinus L. var. secalinus Introduced BRSES

  rye brome · Poaceae 2 counties
• 
  Bromus tectorum L. Introduced BRTE

  cheatgrass · Poaceae 5 counties
• 
  Buglossoides arvensis (L.) I.M. Johnst. Introduced BUAR3

  corn gromwell · Boraginaceae 2 counties
• 
  Bulbostylis capillaris (L.) Kunth ex C.B. Clarke Native BUCA2

  densetuft hairsedge · Cyperaceae 3 counties
• 
  Bulbostylis capillaris (L.) Kunth ex C.B. Clarke ssp. capillaris Native BUCAC

  densetuft hairsedge · Cyperaceae 3 counties
• 
  Cabomba caroliniana A. Gray Native CACA

  Carolina fanwort · Cabombaceae 2 counties
• 
  Cabomba caroliniana A. Gray var. caroliniana Native CACAC4

  Carolina fanwort · Cabombaceae 2 counties
• 
  Cakile edentula (Bigelow) Hook. Native CAED

  American searocket · Brassicaceae 5 counties
• 
  Cakile edentula (Bigelow) Hook. ssp. edentula Native CAEDE

  American searocket · Brassicaceae 5 counties
• 
  Cakile edentula (Bigelow) Hook. ssp. edentula var. edentula Native CAEDE2

  American searocket · Brassicaceae 5 counties
• 
  Calamagrostis canadensis (Michx.) P. Beauv. Native CACA4

  bluejoint · Poaceae 5 counties
• 
  Calamagrostis canadensis (Michx.) P. Beauv. var. canadensis Native CACAC10

  bluejoint · Poaceae 5 counties
• 
  Calamagrostis coarctata Eaton Native CACO71

  Nuttall's reedgrass · Poaceae 3 counties
• 
  Calla palustris L. Native CAPA

  water arum · Araceae 3 counties
• 
  Callitriche heterophylla Pursh Native CAHE3

  twoheaded water-starwort · Callitrichaceae 3 counties
• 
  Callitriche heterophylla Pursh ssp. heterophylla Native CAHEH

  twoheaded water-starwort · Callitrichaceae 3 counties
• 
  Callitriche palustris L. Native CAPA52

  vernal water-starwort · Callitrichaceae 2 counties
• 
  Calluna vulgaris (L.) Hull Introduced CAVU

  heather · Ericaceae 1 county
• 
  Calopogon tuberosus (L.) Britton, Sterns & Poggenb. Native CATU5

  tuberous grasspink · Orchidaceae 4 counties
• 
  Calopogon tuberosus (L.) Britton, Sterns & Poggenb. var. tuberosus Native CATUT

  tuberous grasspink · Orchidaceae 4 counties
• 
  Caltha palustris L. Native CAPA5

  yellow marsh marigold · Ranunculaceae 4 counties
• 
  Caltha palustris L. var. palustris Native CAPAP6

  yellow marsh marigold · Ranunculaceae 4 counties
• 
  Calystegia sepium (L.) R. Br. Both CASE13

  hedge false bindweed · Convolvulaceae 4 counties
• 
  Camelina microcarpa Andrz. ex DC. Introduced CAMI2

  littlepod false flax · Brassicaceae 1 county
• 
  Camelina sativa (L.) Crantz Introduced CASA2

  false flax · Brassicaceae 1 county
• 
  Camelina sativa (L.) Crantz ssp. sativa Introduced CASAS2

  gold-of-pleasure · Brassicaceae 1 county
• 
  Campanula aparinoides Pursh Native CAAP2

  marsh bellflower · Campanulaceae 4 counties
• 
  Campanula rapunculoides L. Introduced CARA

  rampion bellflower · Campanulaceae 4 counties
• 
  Cannabis sativa L. Introduced CASA3

  marijuana · Cannabaceae 1 county
• 
  Cannabis sativa L. ssp. sativa Introduced CASAS3

  marijuana · Cannabaceae 1 county
• 
  Cannabis sativa L. ssp. sativa var. sativa Introduced CASAS9

  marijuana · Cannabaceae 1 county
• 
  Capsella bursa-pastoris (L.) Medik. Introduced CABU2

  shepherd's purse · Brassicaceae 3 counties
• 
  Cardamine parviflora L. Native CAPA12

  sand bittercress · Brassicaceae 1 county
• 
  Cardamine parviflora L. var. arenicola (Britton) O.E. Schulz Native CAPAA2

  sand bittercress · Brassicaceae 1 county
• 
  Cardamine pensylvanica Muhl. ex Willd. Native CAPE3

  Pennsylvania bittercress · Brassicaceae 2 counties
• 
  Cardamine pratensis L. Native CAPR3

  cuckoo flower · Brassicaceae 1 county
• 
  Cardamine pratensis L. var. pratensis Native CAPRP

  cuckoo flower · Brassicaceae 1 county
• 
  Carduus acanthoides L. Introduced CAAC

  spiny plumeless thistle · Asteraceae 2 counties
• 
  Carduus crispus L. Introduced CACR2

  curly plumeless thistle · Asteraceae 1 county
• 
  Carduus nutans L. Introduced CANU4

  nodding plumeless thistle · Asteraceae 2 counties
• 
  Carex abscondita Mack. Native CAAB5

  thicket sedge · Cyperaceae 1 county
• 
  Carex alata Torr. Native CAAL3

  broadwing sedge · Cyperaceae 2 counties
• 
  Carex albicans Willd. ex Spreng. Native CAAL25

  whitetinge sedge · Cyperaceae 4 counties
• 
  Carex albicans Willd. ex Spreng. var. albicans Native CAALA

  whitetinge sedge · Cyperaceae 4 counties
• 
  Carex albolutescens Schwein. Native CAAL5

  greenwhite sedge · Cyperaceae 4 counties
• 
  Carex alopecoidea Tuck. Native CAAL8

  foxtail sedge · Cyperaceae 1 county
• 
  Carex annectens (E.P. Bicknell) E.P. Bicknell Native CAAN6

  yellowfruit sedge · Cyperaceae 3 counties
• 
  Carex arctata Boott ex Hook. Native CAAR3

  drooping woodland sedge · Cyperaceae 1 county
• 
  Carex argyrantha Tuck. Native CAAR4

  hay sedge · Cyperaceae 2 counties
• 
  Carex atlantica L.H. Bailey Native CAAT4

  prickly bog sedge · Cyperaceae 3 counties
• 
  Carex atlantica L.H. Bailey ssp. capillacea (L.H. Bailey) Reznicek Native CAATC

  prickly bog sedge · Cyperaceae 3 counties
• 
  Carex bicknellii Britton Native CABI3

  Bicknell's sedge · Cyperaceae 1 county
• 
  Carex brevior (Dewey) Mack. Native CABR10

  shortbeak sedge · Cyperaceae 5 counties
• 
  Carex bromoides Schkuhr ex Willd. Native CABR14

  brome-like sedge · Cyperaceae 1 county
• 
  Carex bromoides Schkuhr ex Willd. ssp. bromoides Native CABRB6

  brome-like sedge · Cyperaceae 1 county
• 
  Carex bullata Schkuhr ex Willd. Native CABU7

  button sedge · Cyperaceae 5 counties
• 
  Carex buxbaumii Wahlenb. Native CABU6

  Buxbaum's sedge · Cyperaceae 1 county
• 
  Carex canescens L. Native CACA11

  silvery sedge · Cyperaceae 3 counties
• 
  Carex cephalophora Muhl. ex Willd. Native CACE

  oval-leaf sedge · Cyperaceae 1 county
• 
  Carex collinsii Nutt. Native CACO21

  Collins' sedge · Cyperaceae 1 county
• 
  Carex communis L.H. Bailey Native CACO7

  fibrousroot sedge · Cyperaceae 1 county
• 
  Carex communis L.H. Bailey var. communis Native CACOC4

  fibrousroot sedge · Cyperaceae 1 county
• 
  Carex comosa Boott Native CACO8

  longhair sedge · Cyperaceae 3 counties
• 
  Carex conoidea Schkuhr ex Willd. Native CACO14

  openfield sedge · Cyperaceae 1 county
• 
  Carex crinita Lam. Native CACR6

  fringed sedge · Cyperaceae 3 counties
• 
  Carex cristatella Britton Native CACR7

  crested sedge · Cyperaceae 1 county
• 
  Carex cryptolepis Mack. Native CACR9

  northeastern sedge · Cyperaceae 1 county
• 
  Carex debilis Michx. Native CADE5

  white edge sedge · Cyperaceae 4 counties
• 
  Carex debilis Michx. var. rudgei L.H. Bailey Native CADER

  white edge sedge · Cyperaceae 4 counties
• 
  Carex digitalis Willd. Native CADI5

  slender woodland sedge · Cyperaceae 1 county
• 
  Carex digitalis Willd. var. digitalis Native CADID2

  slender woodland sedge · Cyperaceae 1 county
• 
  Carex echinata Murray Native CAEC

  star sedge · Cyperaceae 1 county
• 
  Carex echinata Murray ssp. echinata Native CAECE

  star sedge · Cyperaceae 1 county
• 
  Carex exilis Dewey Native CAEX7

  coastal sedge · Cyperaceae 1 county
• 
  Carex flava L. Native CAFL4

  yellow sedge · Cyperaceae 1 county
• 
  Carex folliculata L. Native CAFO6

  northern long sedge · Cyperaceae 5 counties
• 
  Carex gracillima Schwein. Native CAGR2

  graceful sedge · Cyperaceae 2 counties
• 
  Carex interior L.H. Bailey Native CAIN11

  inland sedge · Cyperaceae 2 counties
• 
  Carex intumescens Rudge Native CAIN12

  greater bladder sedge · Cyperaceae 4 counties
• 
  Carex kobomugi Ohwi Introduced CAKO2

  Japanese sedge · Cyperaceae 1 county
• 
  Carex lacustris Willd. Native CALA16

  hairy sedge · Cyperaceae 1 county
• 
  Carex laevivaginata (Kük.) Mack. Native CALA14

  smoothsheath sedge · Cyperaceae 2 counties
• 
  Carex lasiocarpa Ehrh. Native CALA11

  woollyfruit sedge · Cyperaceae 3 counties
• 
  Carex lasiocarpa Ehrh. var. americana Fernald Native CALAA

  American woollyfruit sedge · Cyperaceae 3 counties
• 
  Carex laxiculmis Schwein. Native CALA18

  spreading sedge · Cyperaceae 1 county
• 
  Carex laxiculmis Schwein. var. laxiculmis Native CALAL4

  spreading sedge · Cyperaceae 1 county
• 
  Carex laxiflora Lam. Native CALA19

  broad looseflower sedge · Cyperaceae 5 counties
• 
  Carex laxiflora Lam. var. laxiflora Native CALAL5

  broad looseflower sedge · Cyperaceae 5 counties
• 
  Carex leptalea Wahlenb. Native CALE10

  bristlystalked sedge · Cyperaceae 2 counties
• 
  Carex leptalea Wahlenb. ssp. leptalea Native CALEL4

  bristlystalked sedge · Cyperaceae 2 counties
• 
  Carex lupulina Muhl. ex Willd. Native CALU4

  hop sedge · Cyperaceae 2 counties
• 
  Carex lurida Wahlenb. Native CALU5

  shallow sedge · Cyperaceae 5 counties
• 
  Carex muehlenbergii Schkuhr ex Willd. Native CAMU4

  Muhlenberg's sedge · Cyperaceae 2 counties
• 
  Carex nigra (L.) Reichard Native CANI5

  smooth black sedge · Cyperaceae 1 county
• 
  Carex normalis Mack. Native CANO

  greater straw sedge · Cyperaceae 1 county
• 
  Carex oligosperma Michx. Native CAOL3

  fewseed sedge · Cyperaceae 1 county
• 
  Carex oligosperma Michx. var. oligosperma Native CAOLO3

  fewseed sedge · Cyperaceae 1 county
• 
  Carex pallescens L. Native CAPA17

  pale sedge · Cyperaceae 2 counties
• 
  Carex panicea L. Introduced CAPA30

  grass-like sedge · Cyperaceae 1 county
• 
  Carex pedunculata Muhl. ex Willd. Native CAPE4

  longstalk sedge · Cyperaceae 1 county
• 
  Carex pensylvanica Lam. Native CAPE6

  Pennsylvania sedge · Cyperaceae 4 counties
• 
  Carex platyphylla Carey Native CAPL5

  broadleaf sedge · Cyperaceae 1 county
• 
  Carex polymorpha Muhl. Native CAPO4

  variable sedge · Cyperaceae 2 counties
• 
  Carex pseudocyperus L. Native CAPS

  cypress-like sedge · Cyperaceae 1 county
• 
  Carex reznicekii Werier Native CARE18

  Reznicek's sedge · Cyperaceae 1 county
• 
  Carex rosea Schkuhr ex Willd. Native CARO22

  rosy sedge · Cyperaceae 3 counties
• 
  Carex scabrata Schwein. Native CASC13

  eastern rough sedge · Cyperaceae 1 county
• 
  Carex scoparia Schkuhr ex Willd. Native CASC11

  broom sedge · Cyperaceae 4 counties
• 
  Carex scoparia Schkuhr ex Willd. var. scoparia Native CASCS

  broom sedge · Cyperaceae 4 counties
• 
  Carex seorsa Howe Native CASE6

  weak stellate sedge · Cyperaceae 1 county
• 
  Carex silicea Olney Native CASI6

  beach sedge · Cyperaceae 4 counties
• 
  Carex stipata Muhl. ex Willd. Native CAST5

  awlfruit sedge · Cyperaceae 4 counties
• 
  Carex stipata Muhl. ex Willd. var. stipata Native CASTS3

  owlfruit sedge · Cyperaceae 4 counties
• 
  Carex straminea Willd. ex Schkuhr Native CAST6

  eastern straw sedge · Cyperaceae 5 counties
• 
  Carex stricta Lam. Native CAST8

  upright sedge · Cyperaceae 4 counties
• 
  Carex swanii (Fernald) Mack. Native CASW

  Swan's sedge · Cyperaceae 5 counties
• 
  Carex tenera Dewey Native CATE3

  quill sedge · Cyperaceae 2 counties
• 
  Carex tetanica Schkuhr Native CATE6

  rigid sedge · Cyperaceae 1 county
• 
  Carex tribuloides Wahlenb. Native CATR7

  blunt broom sedge · Cyperaceae 2 counties
• 
  Carex tribuloides Wahlenb. var. tribuloides Native CATRT2

  blunt broom sedge · Cyperaceae 2 counties
• 
  Carex trisperma Dewey Native CATR10

  threeseeded sedge · Cyperaceae 2 counties
• 
  Carex umbellata Schkuhr ex Willd. Native CAUM4

  parasol sedge · Cyperaceae 2 counties
• 
  Carex utriculata Boott Native CAUT

  Northwest Territory sedge · Cyperaceae 3 counties
• 
  Carex vesicaria L. Native CAVE6

  blister sedge · Cyperaceae 2 counties
• 
  Carex vestita Willd. Native CAVE9

  velvet sedge · Cyperaceae 3 counties
• 
  Carex virescens Muhl. ex Willd. Native CAVI4

  ribbed sedge · Cyperaceae 2 counties
• 
  Carex viridula Michx. Native CAVI5

  little green sedge · Cyperaceae 1 county
• 
  Carex vulpinoidea Michx. Native CAVU2

  fox sedge · Cyperaceae 3 counties
• 
  Carex vulpinoidea Michx. var. vulpinoidea Native CAVUV

  fox sedge · Cyperaceae 3 counties
• 
  Carpinus caroliniana Walter Native CACA18

  American hornbeam · Betulaceae 3 counties
• 
  Carpinus caroliniana Walter ssp. virginiana (Marshall) Furlow Native CACAV

  American hornbeam · Betulaceae 3 counties
• 
  Carum carvi L. Introduced CACA19

  caraway · Apiaceae 1 county
• 
  Carya cordiformis (Wangenh.) K. Koch Native CACO15

  bitternut hickory · Juglandaceae 2 counties
• 
  Carya glabra (Mill.) Sweet Native CAGL8

  pignut hickory · Juglandaceae 5 counties
• 
  Carya ovalis (Wangenh.) Sarg. Native CAOV3

  red hickory · Juglandaceae 2 counties
• 
  Carya ovata (Mill.) K. Koch Native CAOV2

  shagbark hickory · Juglandaceae 1 county
• 
  Carya tomentosa (Lam.) Nutt. Native CATO6

  mockernut hickory · Juglandaceae 3 counties
• 
  Castanea dentata (Marshall) Borkh. Native CADE12

  American chestnut · Fagaceae 3 counties
• 
  Castanea mollissima Blume Introduced CAMO83

  Chinese chestnut · Fagaceae 1 county
• 
  Castilleja coccinea (L.) Spreng. Native CACO17

  scarlet Indian paintbrush · Scrophulariaceae 3 counties
• 
  Catalpa bignonioides Walter Native CABI8

  southern catalpa · Bignoniaceae 1 county
• 
  Catapodium rigidum (L.) C.E. Hubbard ex Dony Introduced CARI2

  ferngrass · Poaceae 1 county
• 
  Ceanothus americanus L. Native CEAM

  New Jersey tea · Rhamnaceae 4 counties
• 
  Celastrus orbiculatus Thunb. Introduced CEOR7

  Oriental bittersweet · Celastraceae 3 counties
• 
  Celastrus scandens L. Native CESC

  American bittersweet · Celastraceae 4 counties
• 
  Celtis occidentalis L. Native CEOC

  common hackberry · Ulmaceae 4 counties
• 
  Cenchrus longispinus (Hack.) Fernald Native CELO3

  mat sandbur · Poaceae 4 counties
• 
  Centaurea cyanus L. Introduced CECY2

  garden cornflower · Asteraceae 3 counties
• 
  Centaurea jacea L. Introduced CEJA

  brownray knapweed · Asteraceae 1 county
• 
  Centaurea nigra L. Introduced CENI2

  lesser knapweed · Asteraceae 4 counties
• 
  Centaurea stoebe L. Introduced CEST8

  spotted knapweed · Asteraceae 3 counties
• 
  Centaurea stoebe L. ssp. micranthos (Gugler) Hayek Introduced CESTM

  spotted knapweed · Asteraceae 3 counties
• 
  Cephalanthus occidentalis L. Native CEOC2

  common buttonbush · Rubiaceae 3 counties
• 
  Cerastium arvense L. Both CEAR4

  field chickweed · Caryophyllaceae 1 county
• 
  Cerastium arvense L. ssp. strictum (L.) Ugborogho Native CEARS2

  field chickweed · Caryophyllaceae 1 county
• 
  Cerastium fontanum Baumg. Introduced CEFO2

  common mouse-ear chickweed · Caryophyllaceae 5 counties
• 
  Cerastium fontanum Baumg. ssp. vulgare (Hartm.) Greuter & Burdet Introduced CEFOV2

  big chickweed · Caryophyllaceae 5 counties
• 
  Cerastium glomeratum Thuill. Introduced CEGL2

  sticky chickweed · Caryophyllaceae 1 county
• 
  Cerastium semidecandrum L. Introduced CESE4

  fivestamen chickweed · Caryophyllaceae 1 county
• 
  Ceratophyllum demersum L. Native CEDE4

  coon's tail · Ceratophyllaceae 2 counties
• 
  Ceratophyllum echinatum A. Gray Native CEEC2

  spineless hornwort · Ceratophyllaceae 2 counties
• 
  Chamaecrista fasciculata (Michx.) Greene Native CHFA2

  partridge pea · Fabaceae 5 counties
• 
  Chamaecrista fasciculata (Michx.) Greene var. fasciculata Native CHFAF

  partridge pea · Fabaceae 5 counties
• 
  Chamaecrista nictitans (L.) Moench Native CHNI2

  sensitive partridge pea · Fabaceae 3 counties
• 
  Chamaecrista nictitans (L.) Moench ssp. nictitans Native CHNIN

  sensitive partridge pea · Fabaceae 3 counties
• 
  Chamaecrista nictitans (L.) Moench ssp. nictitans var. nictitans Native CHNIN2

  sensitive partridge pea · Fabaceae 3 counties
• 
  Chamaecyparis thyoides (L.) Britton, Sterns & Poggenb. Native CHTH2

  Atlantic white cedar · Cupressaceae 3 counties
• 
  Chamaedaphne calyculata (L.) Moench Native CHCA2

  leatherleaf · Ericaceae 3 counties
• 
  Chamaesyce maculata (L.) Small Native CHMA15

  spotted sandmat · Euphorbiaceae 5 counties
• 
  Chamaesyce polygonifolia (L.) Small Native CHPO6

  seaside sandmat · Euphorbiaceae 4 counties
• 
  Chamaesyce vermiculata (Raf.) House Native CHVE5

  wormseed sandmat · Euphorbiaceae 1 county
• 
  Chamerion angustifolium (L.) Holub Native CHAN9

  fireweed · Onagraceae 2 counties
• 
  Chamerion angustifolium (L.) Holub ssp. circumvagum (Mosquin) Hoch Native CHANC

  fireweed · Onagraceae 2 counties
• 
  Chelidonium majus L. Introduced CHMA2

  celandine · Papaveraceae 4 counties
• 
  Chelidonium majus L. var. majus Introduced CHMAM

  celandine · Papaveraceae 4 counties
• 
  Chelone glabra L. Native CHGL2

  white turtlehead · Scrophulariaceae 3 counties
• 
  Chenopodium album L. Both CHAL7

  lambsquarters · Chenopodiaceae 4 counties
• 
  Chenopodium album L. var. striatum Krašan Native CHALS2

  lateflowering goosefoot · Chenopodiaceae 1 county
• 
  Chenopodium berlandieri Moq. Native CHBE4

  pitseed goosefoot · Chenopodiaceae 2 counties
• 
  Chenopodium berlandieri Moq. var. macrocalycium (Aellen) Cronquist Native CHBEM

  pitseed goosefoot · Chenopodiaceae 2 counties
• 
  Chenopodium glaucum L. Introduced CHGL3

  oakleaf goosefoot · Chenopodiaceae 1 county
• 
  Chenopodium murale L. Introduced CHMU2

  nettleleaf goosefoot · Chenopodiaceae 1 county
• 
  Chenopodium pratericola Rydb. Native CHPR5

  desert goosefoot · Chenopodiaceae 2 counties
• 
  Chenopodium simplex (Torr.) Raf. Native CHSI2

  mapleleaf goosefoot · Chenopodiaceae 3 counties
• 
  Chenopodium urbicum L. Introduced CHUR

  city goosefoot · Chenopodiaceae 1 county
• 
  Chimaphila maculata (L.) Pursh Native CHMA3

  striped prince's pine · Pyrolaceae 4 counties
• 
  Chimaphila umbellata (L.) W.P.C. Barton Native CHUM

  pipsissewa · Pyrolaceae 3 counties
• 
  Chimaphila umbellata (L.) W.P.C. Barton ssp. cisatlantica (S.F. Blake) Hultén Native CHUMC2

  pipsissewa · Pyrolaceae 3 counties
• 
  Chrysosplenium americanum Schwein. ex Hook. Native CHAM2

  American golden saxifrage · Saxifragaceae 2 counties
• 
  Cichorium intybus L. Introduced CIIN

  chicory · Asteraceae 3 counties
• 
  Cicuta bulbifera L. Native CIBU

  bulblet-bearing water hemlock · Apiaceae 3 counties
• 
  Cicuta maculata L. Native CIMA2

  spotted water hemlock · Apiaceae 4 counties
• 
  Cicuta maculata L. var. maculata Native CIMAM

  spotted water hemlock · Apiaceae 4 counties
• 
  Cinna arundinacea L. Native CIAR2

  sweet woodreed · Poaceae 3 counties
• 
  Circaea alpina L. Native CIAL

  small enchanter's nightshade · Onagraceae 1 county
• 
  Circaea alpina L. ssp. alpina Native CIALA

  small enchanter's nightshade · Onagraceae 1 county
• 
  Circaea lutetiana L. Native CILU

  broadleaf enchanter's nightshade · Onagraceae 3 counties
• 
  Circaea lutetiana L. ssp. canadensis (L.) Asch. & Magnus Native CILUC

  broadleaf enchanter's nightshade · Onagraceae 3 counties
• 
  Cirsium arvense (L.) Scop. Introduced CIAR4

  Canada thistle · Asteraceae 3 counties
• 
  Cirsium discolor (Muhl. ex Willd.) Spreng. Native CIDI

  field thistle · Asteraceae 3 counties
• 
  Cirsium horridulum Michx. Native CIHO2

  yellow thistle · Asteraceae 3 counties
• 
  Cirsium horridulum Michx. var. horridulum Native CIHOH

  yellow thistle · Asteraceae 3 counties
• 
  Cirsium muticum Michx. Native CIMU

  swamp thistle · Asteraceae 4 counties
• 
  Cirsium pumilum Spreng. Native CIPU4

  pasture thistle · Asteraceae 3 counties
• 
  Cirsium vulgare (Savi) Ten. Introduced CIVU

  bull thistle · Asteraceae 3 counties
• 
  Citrullus lanatus (Thunb.) Matsum. & Nakai Introduced CILA3

  watermelon · Cucurbitaceae 1 county
• 
  Citrullus lanatus (Thunb.) Matsum. & Nakai var. lanatus Introduced CILAL

  watermelon · Cucurbitaceae 1 county
• 
  Cladium mariscoides (Muhl.) Torr. Native CLMA

  smooth sawgrass · Cyperaceae 4 counties
• 
  Claytonia virginica L. Native CLVI3

  Virginia springbeauty · Portulacaceae 1 county
• 
  Claytonia virginica L. var. virginica Native CLVIV

  Virginia springbeauty · Portulacaceae 1 county
• 
  Claytonia virginica L. var. virginica f. virginica Native CLVIV2

  Virginia springbeauty · Portulacaceae 1 county
• 
  Clematis occidentalis (Hornem.) DC. Native CLOC2

  western blue virginsbower · Ranunculaceae 1 county
• 
  Clematis occidentalis (Hornem.) DC. var. occidentalis Native CLOCO

  western blue virginsbower · Ranunculaceae 1 county
• 
  Clematis terniflora DC. Introduced CLTE4

  sweet autumn virginsbower · Ranunculaceae 1 county
• 
  Clematis virginiana L. Native CLVI5

  devil's darning needles · Ranunculaceae 4 counties
• 
  Cleome hassleriana Chod. Introduced CLHA

  pink queen · Capparaceae 1 county
• 
  Clethra alnifolia L. Native CLAL3

  coastal sweetpepperbush · Clethraceae 5 counties
• 
  Clintonia borealis (Aiton) Raf. Native CLBO3

  bluebead · Liliaceae 2 counties
• 
  Collinsonia canadensis L. Native COCA4

  richweed · Lamiaceae 1 county
• 
  Colutea arborescens L. Introduced COAR6

  bladder senna · Fabaceae 1 county
• 
  Comandra umbellata (L.) Nutt. Native COUM

  bastard toadflax · Santalaceae 4 counties
• 
  Comandra umbellata (L.) Nutt. ssp. umbellata Native COUMU

  bastard toadflax · Santalaceae 4 counties
• 
  Commelina communis L. Introduced COCO3

  Asiatic dayflower · Commelinaceae 5 counties
• 
  Comptonia peregrina (L.) J.M. Coult. Native COPE80

  sweet fern · Myricaceae 5 counties
• 
  Conium maculatum L. Introduced COMA2

  poison hemlock · Apiaceae 1 county
• 
  Conopholis americana (L.) Wallr. Native COAM

  American cancer-root · Orobanchaceae 1 county
• 
  Consolida ajacis (L.) Schur Introduced COAJ

  doubtful knight's-spur · Ranunculaceae 2 counties
• 
  Convallaria majalis L. Introduced COMA7

  European lily of the valley · Liliaceae 2 counties
• 
  Convolvulus arvensis L. Introduced COAR4

  field bindweed · Convolvulaceae 4 counties
• 
  Conyza canadensis (L.) Cronquist Native COCA5

  Canadian horseweed · Asteraceae 5 counties
• 
  Coptis trifolia (L.) Salisb. Native COTR2

  threeleaf goldthread · Ranunculaceae 3 counties
• 
  Corallorhiza maculata (Raf.) Raf. Native COMA25

  summer coralroot · Orchidaceae 3 counties
• 
  Corallorhiza maculata (Raf.) Raf. var. maculata Native COMAM7

  summer coralroot · Orchidaceae 3 counties
• 
  Corallorhiza odontorhiza (Willd.) Poir. Native COOD7

  autumn coralroot · Orchidaceae 1 county
• 
  Corallorhiza odontorhiza (Willd.) Poir. var. odontorhiza Native COODO2

  autumn coralroot · Orchidaceae 1 county
• 
  Corallorhiza trifida Chatelain Native COTR18

  yellow coralroot · Orchidaceae 1 county
• 
  Coreopsis lanceolata L. Native COLA5

  lanceleaf tickseed · Asteraceae 2 counties
• 
  Coreopsis rosea Nutt. Native CORO

  pink tickseed · Asteraceae 3 counties
• 
  Coreopsis tinctoria Nutt. Native COTI3

  golden tickseed · Asteraceae 1 county
• 
  Coreopsis tinctoria Nutt. var. tinctoria Native COTIT

  golden tickseed · Asteraceae 1 county
• 
  Coriandrum sativum L. Introduced COSA

  coriander · Apiaceae 1 county
• 
  Cornus alternifolia L. f. Native COAL2

  alternateleaf dogwood · Cornaceae 4 counties
• 
  Cornus amomum Mill. Native COAM2

  silky dogwood · Cornaceae 5 counties
• 
  Cornus canadensis L. Native COCA13

  bunchberry dogwood · Cornaceae 2 counties
• 
  Cornus florida L. Native COFL2

  flowering dogwood · Cornaceae 3 counties
• 
  Cornus racemosa Lam. Native CORA6

  gray dogwood · Cornaceae 2 counties
• 
  Cornus rugosa Lam. Native CORU

  roundleaf dogwood · Cornaceae 1 county
• 
  Cornus sericea L. Native COSE16

  redosier dogwood · Cornaceae 1 county
• 
  Cornus sericea L. ssp. sericea Native COSES

  redosier dogwood · Cornaceae 1 county
• 
  Coronopus squamatus (Forssk.) Asch. Introduced COSQ

  greater swinecress · Brassicaceae 1 county
• 
  Corydalis sempervirens (L.) Pers. Native COSE5

  rock harlequin · Fumariaceae 2 counties
• 
  Corylus americana Walter Native COAM3

  American hazelnut · Betulaceae 4 counties
• 
  Corylus cornuta Marshall Native COCO6

  beaked hazelnut · Betulaceae 4 counties
• 
  Corylus cornuta Marshall var. cornuta Native COCOC2

  beaked hazelnut · Betulaceae 4 counties
• 
  Cosmos bipinnatus Cav. Introduced COBI2

  garden cosmos · Asteraceae 2 counties
• 
  Crataegus chrysocarpa Ashe Native CRCH

  fireberry hawthorn · Rosaceae 4 counties
• 
  Crataegus chrysocarpa Ashe var. chrysocarpa Native CRCHC2

  red haw · Rosaceae 4 counties
• 
  Crataegus crus-galli L. Native CRCR2

  cockspur hawthorn · Rosaceae 3 counties
• 
  Crataegus intricata Lange Native CRIN3

  Copenhagen hawthorn · Rosaceae 3 counties
• 
  Crataegus monogyna Jacq. Introduced CRMO3

  oneseed hawthorn · Rosaceae 3 counties
• 
  Crataegus phaenopyrum (L. f.) Medik. Native CRPH

  Washington hawthorn · Rosaceae 1 county
• 
  Crataegus succulenta Schrad. ex Link Native CRSU5

  fleshy hawthorn · Rosaceae 2 counties
• 
  Crepis capillaris (L.) Wallr. Introduced CRCA3

  smooth hawksbeard · Asteraceae 2 counties
• 
  Crotalaria sagittalis L. Native CRSA4

  arrowhead rattlebox · Fabaceae 3 counties
• 
  Cryptotaenia canadensis (L.) DC. Native CRCA9

  Canadian honewort · Apiaceae 1 county
• 
  Cucumis melo L. Introduced CUME

  cantaloupe · Cucurbitaceae 1 county
• 
  Cuscuta cephalanthi Engelm. Native CUCE

  buttonbush dodder · Cuscutaceae 2 counties
• 
  Cuscuta compacta Juss. ex Choisy Native CUCO2

  compact dodder · Cuscutaceae 4 counties
• 
  Cuscuta compacta Juss. ex Choisy var. compacta Native CUCOC

  compact dodder · Cuscutaceae 4 counties
• 
  Cuscuta epithymum (L.) L. Introduced CUEP

  clover dodder · Cuscutaceae 1 county
• 
  Cuscuta gronovii Willd. ex Schult. Native CUGR

  scaldweed · Cuscutaceae 4 counties
• 
  Cuscuta gronovii Willd. ex Schult. var. gronovii Native CUGRG

  scaldweed · Cuscutaceae 4 counties
• 
  Cuscuta pentagona Engelm. Native CUPE3

  fiveangled dodder · Cuscutaceae 3 counties
• 
  Cuscuta pentagona Engelm. var. pentagona Native CUPEP2

  fiveangled dodder · Cuscutaceae 3 counties
• 
  Cuscuta polygonorum Engelm. Native CUPO

  smartweed dodder · Cuscutaceae 1 county
• 
  Cyclachaena xanthiifolia (Nutt.) Fresen. Native CYXA2

  carelessweed · Asteraceae 1 county
• 
  Cynanchum louiseae Kartesz & Gandhi Introduced CYLO11

  Louise's swallow-wort · Asclepiadaceae 3 counties
• 
  Cynoglossum officinale L. Introduced CYOF

  gypsyflower · Boraginaceae 1 county
• 
  Cyperus bipartitus Torr. Native CYBI6

  slender flatsedge · Cyperaceae 4 counties
• 
  Cyperus dentatus Torr. Native CYDE2

  toothed flatsedge · Cyperaceae 4 counties
• 
  Cyperus diandrus Torr. Native CYDI3

  umbrella flatsedge · Cyperaceae 4 counties
• 
  Cyperus erythrorhizos Muhl. Native CYER2

  redroot flatsedge · Cyperaceae 1 county
• 
  Cyperus esculentus L. Both CYES

  yellow nutsedge · Cyperaceae 3 counties
• 
  Cyperus esculentus L. var. leptostachyus Boeckeler Introduced CYESL

  yellow nutsedge · Cyperaceae 3 counties
• 
  Cyperus filicinus Vahl Native CYFI

  fern flatsedge · Cyperaceae 4 counties
• 
  Cyperus grayi Torr. Native CYGR2

  Gray's flatsedge · Cyperaceae 3 counties
• 
  Cyperus lupulinus (Spreng.) Marcks Native CYLU2

  Great Plains flatsedge · Cyperaceae 4 counties
• 
  Cyperus lupulinus (Spreng.) Marcks ssp. lupulinus Native CYLUL

  Great Plains flatsedge · Cyperaceae 4 counties
• 
  Cyperus odoratus L. Native CYOD

  fragrant flatsedge · Cyperaceae 3 counties
• 
  Cyperus squarrosus L. Native CYSQ

  bearded flatsedge · Cyperaceae 1 county
• 
  Cyperus strigosus L. Native CYST

  strawcolored flatsedge · Cyperaceae 5 counties
• 
  Cypripedium acaule Aiton Native CYAC3

  moccasin flower · Orchidaceae 3 counties
• 
  Cystopteris bulbifera (L.) Bernh. Native CYBU3

  bulblet bladderfern · Dryopteridaceae 1 county
• 
  Cystopteris tenuis (Michx.) Desv. Native CYTE7

  upland brittle bladderfern · Dryopteridaceae 3 counties
• 
  Dactylis glomerata L. Introduced DAGL

  orchardgrass · Poaceae 5 counties
• 
  Dactylis glomerata L. ssp. glomerata Introduced DAGLG

  orchardgrass · Poaceae 5 counties
• 
  Dactylorhiza viridis (L.) R.M. Bateman, A.M. Pridgeon & M.W. Chase Native DAVI6

  longbract frog orchid · Orchidaceae 1 county
• 
  Danthonia compressa Austin Native DACO

  flattened oatgrass · Poaceae 3 counties
• 
  Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. Native DASP2

  poverty oatgrass · Poaceae 5 counties
• 
  Daphne mezereum L. Introduced DAME3

  paradise plant · Thymelaeaceae 1 county
• 
  Datura stramonium L. Introduced DAST

  jimsonweed · Solanaceae 2 counties
• 
  Datura wrightii Regel Native DAWR2

  sacred thorn-apple · Solanaceae 1 county
• 
  Daucus carota L. Introduced DACA6

  Queen Anne's lace · Apiaceae 5 counties
• 
  Decodon verticillatus (L.) Elliott Native DEVE

  swamp loosestrife · Lythraceae 3 counties
• 
  Dennstaedtia punctilobula (Michx.) T. Moore Native DEPU2

  eastern hayscented fern · Dennstaedtiaceae 4 counties
• 
  Deparia acrostichoides (Sw.) M. Kato Native DEAC4

  silver false spleenwort · Dryopteridaceae 2 counties
• 
  Deschampsia cespitosa (L.) P. Beauv. Native DECE

  tufted hairgrass · Poaceae 2 counties
• 
  Deschampsia flexuosa (L.) Trin. Native DEFL

  wavy hairgrass · Poaceae 4 counties
• 
  Deschampsia flexuosa (L.) Trin. var. flexuosa Native DEFLF

  wavy hairgrass · Poaceae 4 counties
• 
  Descurainia sophia (L.) Webb ex Prantl Introduced DESO2

  herb sophia · Brassicaceae 1 county
• 
  Desmodium canadense (L.) DC. Native DECA7

  showy ticktrefoil · Fabaceae 3 counties
• 
  Desmodium canescens (L.) DC. Native DECA8

  hoary ticktrefoil · Fabaceae 1 county
• 
  Desmodium ciliare (Muhl. ex Willd.) DC. Native DECI

  hairy small-leaf ticktrefoil · Fabaceae 3 counties
• 
  Desmodium ciliare (Muhl. ex Willd.) DC. var. ciliare Native DECIC

  hairy small-leaf ticktrefoil · Fabaceae 3 counties
• 
  Desmodium cuspidatum (Muhl. ex Willd.) DC. ex D. Don Native DECU

  largebract ticktrefoil · Fabaceae 1 county
• 
  Desmodium cuspidatum (Muhl. ex Willd.) DC. ex D. Don var. cuspidatum Native DECUC

  largebract ticktrefoil · Fabaceae 1 county
• 
  Desmodium glutinosum (Muhl. ex Willd.) Alph. Wood Native DEGL5

  pointedleaf ticktrefoil · Fabaceae 1 county
• 
  Desmodium marilandicum (L.) DC. Native DEMA2

  smooth small-leaf ticktrefoil · Fabaceae 1 county
• 
  Desmodium nudiflorum (L.) DC. Native DENU4

  nakedflower ticktrefoil · Fabaceae 3 counties
• 
  Desmodium obtusum (Muhl. ex Willd.) DC. Native DEOB5

  stiff ticktrefoil · Fabaceae 3 counties
• 
  Desmodium paniculatum (L.) DC. Native DEPA6

  panicledleaf ticktrefoil · Fabaceae 2 counties
• 
  Desmodium paniculatum (L.) DC. var. paniculatum Native DEPAP2

  panicledleaf ticktrefoil · Fabaceae 2 counties
• 
  Desmodium perplexum B.G. Schub. Native DEPE80

  perplexed ticktrefoil · Fabaceae 1 county
• 
  Desmodium rotundifolium DC. Native DERO3

  prostrate ticktrefoil · Fabaceae 1 county
• 
  Desmodium sessilifolium (Torr.) Torr. & A. Gray Native DESE

  sessileleaf ticktrefoil · Fabaceae 3 counties
• 
  Deutzia scabra Thunb. Introduced DESC4

  fuzzy pride-of-Rochester · Hydrangeaceae 1 county
• 
  Dianthus armeria L. Introduced DIAR

  Deptford pink · Caryophyllaceae 5 counties
• 
  Dianthus barbatus L. Introduced DIBA

  sweetwilliam · Caryophyllaceae 1 county
• 
  Dichanthelium acuminatum (Sw.) Gould & C.A. Clark Native DIAC2

  tapered rosette grass · Poaceae 2 counties
• 
  Dichanthelium acuminatum (Sw.) Gould & C.A. Clark var. fasciculatum (Torr.) Freckmann Native DIACF

  western panicgrass · Poaceae 2 counties
• 
  Dichanthelium clandestinum (L.) Gould Native DICL

  deertongue · Poaceae 5 counties
• 
  Dichanthelium commutatum (Schult.) Gould Native DICO2

  variable panicgrass · Poaceae 2 counties
• 
  Dichanthelium depauperatum (Muhl.) Gould Native DIDE4

  starved panicgrass · Poaceae 4 counties
• 
  Dichanthelium dichotomum (L.) Gould Native DIDI6

  cypress panicgrass · Poaceae 3 counties
• 
  Dichanthelium dichotomum (L.) Gould var. dichotomum Native DIDID

  cypress panicgrass · Poaceae 3 counties
• 
  Dichanthelium latifolium (L.) Gould & C.A. Clark Native DILA8

  broadleaf rosette grass · Poaceae 2 counties
• 
  Dichanthelium linearifolium (Scribn. ex Nash) Gould Native DILI2

  slimleaf panicgrass · Poaceae 4 counties
• 
  Dichanthelium meridionale (Ashe) Freckmann Native DIME2

  matting rosette grass · Poaceae 4 counties
• 
  Dichanthelium oligosanthes (Schult.) Gould Native DIOL

  Heller's rosette grass · Poaceae 5 counties
• 
  Dichanthelium oligosanthes (Schult.) Gould var. oligosanthes Native DIOLO

  Heller's rosette grass · Poaceae 5 counties
• 
  Dichanthelium sabulorum (Lam.) Gould & C.A. Clark Native DISA5

  hemlock rosette grass · Poaceae 3 counties
• 
  Dichanthelium sabulorum (Lam.) Gould & C.A. Clark var. thinium (Hitchc. & Chase) Gould & C.A. Clark Native DISAT

  hemlock rosette grass · Poaceae 3 counties
• 
  Dichanthelium scabriusculum (Elliott) Gould & C.A. Clark Native DISC2

  woolly rosette grass · Poaceae 2 counties
• 
  Dichanthelium scoparium (Lam.) Gould Native DISC3

  velvet panicum · Poaceae 1 county
• 
  Dichanthelium sphaerocarpon (Elliott) Gould Native DISP2

  roundseed panicgrass · Poaceae 4 counties
• 
  Dichanthelium sphaerocarpon (Elliott) Gould var. sphaerocarpon Native DISPS3

  roundseed panicgrass · Poaceae 4 counties
• 
  Dichanthelium spretum (Schult.) Freckmann Native DISP4

  Eaton's rosette grass · Poaceae 4 counties
• 
  Dichanthelium villosissimum (Nash) Freckmann Native DIVI7

  whitehair rosette grass · Poaceae 1 county
• 
  Dichanthelium villosissimum (Nash) Freckmann var. villosissimum Native DIVIV

  whitehair rosette grass · Poaceae 1 county
• 
  Diervilla lonicera Mill. Native DILO

  northern bush honeysuckle · Caprifoliaceae 1 county
• 
  Digitaria filiformis (L.) Koeler Native DIFI

  slender crabgrass · Poaceae 2 counties
• 
  Digitaria ischaemum (Schreb.) Schreb. ex Muhl. Introduced DIIS

  smooth crabgrass · Poaceae 1 county
• 
  Digitaria sanguinalis (L.) Scop. Introduced DISA

  hairy crabgrass · Poaceae 4 counties
• 
  Diodia teres Walter Native DITE2

  poorjoe · Rubiaceae 2 counties
• 
  Diodia teres Walter var. teres Native DITET

  poorjoe · Rubiaceae 2 counties
• 
  Dioscorea villosa L. Native DIVI4

  wild yam · Dioscoreaceae 1 county
• 
  Dipsacus fullonum L. Introduced DIFU2

  Fuller's teasel · Dipsacaceae 1 county
• 
  Distichlis spicata (L.) Greene Native DISP

  saltgrass · Poaceae 5 counties
• 
  Doellingeria umbellata (Mill.) Nees Native DOUM2

  parasol whitetop · Asteraceae 2 counties
• 
  Doellingeria umbellata (Mill.) Nees var. umbellata Native DOUMU

  parasol whitetop · Asteraceae 2 counties
• 
  Draba reptans (Lam.) Fernald Native DRRE2

  Carolina draba · Brassicaceae 2 counties
• 
  Draba verna L. Introduced DRVE2

  spring draba · Brassicaceae 5 counties
• 
  Dracocephalum parviflorum Nutt. Native DRPA2

  American dragonhead · Lamiaceae 1 county
• 
  Drosera intermedia Hayne Native DRIN3

  spoonleaf sundew · Droseraceae 4 counties
• 
  Drosera rotundifolia L. Native DRRO

  roundleaf sundew · Droseraceae 5 counties
• 
  Drosera rotundifolia L. var. rotundifolia Native DRROR

  roundleaf sundew · Droseraceae 5 counties
• 
  Dryopteris carthusiana (Vill.) H.P. Fuchs Native DRCA11

  spinulose woodfern · Dryopteridaceae 5 counties
• 
  Dryopteris clintoniana (D.C. Eaton) Dowell Native DRCL

  Clinton's woodfern · Dryopteridaceae 1 county
• 
  Dryopteris cristata (L.) A. Gray Native DRCR4

  crested woodfern · Dryopteridaceae 4 counties
• 
  Dryopteris marginalis (L.) A. Gray Native DRMA4

  marginal woodfern · Dryopteridaceae 4 counties
• 
  Dulichium arundinaceum (L.) Britton Native DUAR3

  three-way sedge · Cyperaceae 4 counties
• 
  Dulichium arundinaceum (L.) Britton var. arundinaceum Native DUARA

  three-way sedge · Cyperaceae 4 counties
• 
  Dysphania ambrosioides (L.) Mosyakin & Clemants Both DYAM

  Mexican tea · Chenopodiaceae 3 counties
• 
  Dysphania botrys (L.) Mosyakin & Clemants Introduced DYBO

  Jerusalem oak goosefoot · Chenopodiaceae 2 counties
• 
  Dysphania pumilio (R. Br.) Mosyakin & Clemants Introduced DYPU

  clammy goosefoot · Chenopodiaceae 1 county
• 
  Echinochloa crus-galli (L.) P. Beauv. Introduced ECCR

  barnyardgrass · Poaceae 4 counties
• 
  Echinochloa muricata (P. Beauv.) Fernald Native ECMU2

  rough barnyardgrass · Poaceae 4 counties
• 
  Echinochloa walteri (Pursh) A. Heller Native ECWA

  coast cockspur grass · Poaceae 2 counties
• 
  Echinocystis lobata (Michx.) Torr. & A. Gray Native ECLO

  wild cucumber · Cucurbitaceae 2 counties
• 
  Echium vulgare L. Introduced ECVU

  common viper's bugloss · Boraginaceae 4 counties
• 
  Elaeagnus angustifolia L. Introduced ELAN

  Russian olive · Elaeagnaceae 1 county
• 
  Elaeagnus umbellata Thunb. Introduced ELUM

  autumn olive · Elaeagnaceae 3 counties
• 
  Elaeagnus umbellata Thunb. var. parvifolia (Wall. ex Royle) C.K. Schneid. Introduced ELUMP

  autumn olive · Elaeagnaceae 3 counties
• 
  Elatine americana (Pursh) Arn. Native ELAM3

  American waterwort · Elatinaceae 1 county
• 
  Elatine minima (Nutt.) Fisch. & C.A. Mey. Native ELMI

  small waterwort · Elatinaceae 4 counties
• 
  Eleocharis acicularis (L.) Roem. & Schult. Native ELAC

  needle spikerush · Cyperaceae 3 counties
• 
  Eleocharis acicularis (L.) Roem. & Schult. var. acicularis Native ELACA

  needle spikerush · Cyperaceae 3 counties
• 
  Eleocharis equisetoides (Elliott) Torr. Native ELEQ

  jointed spikesedge · Cyperaceae 2 counties
• 
  Eleocharis fallax Weath. Native ELFA

  creeping spikerush · Cyperaceae 1 county
• ⚘
  Eleocharis halophila (Fernald & Brack.) Fernald & Brack. Native ELHA2

  saltmarsh spikerush · Cyperaceae 2 counties
• 
  Eleocharis melanocarpa Torr. Native ELME

  blackfruit spikerush · Cyperaceae 2 counties
• ⚘
  Eleocharis olivacea Torr. Native ELOL

  bright green spikerush · Cyperaceae 4 counties
• ⚘
  Eleocharis olivacea Torr. var. olivacea Native ELOLO

  bright green spikerush · Cyperaceae 4 counties
• 
  Eleocharis palustris (L.) Roem. & Schult. Native ELPA3

  common spikerush · Cyperaceae 3 counties
• 
  Eleocharis palustris (L.) Roem. & Schult. var. palustris Native ELPAP

  common spikerush · Cyperaceae 3 counties
• 
  Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer Native ELPA5

  dwarf spikerush · Cyperaceae 3 counties
• 
  Eleocharis robbinsii Oakes Native ELRO

  Robbins' spikerush · Cyperaceae 2 counties
• 
  Eleocharis rostellata (Torr.) Torr. Native ELRO2

  beaked spikerush · Cyperaceae 2 counties
• 
  Eleocharis tenuis (Willd.) Schult. Native ELTE

  slender spikerush · Cyperaceae 4 counties
• 
  Eleocharis tenuis (Willd.) Schult. var. tenuis Native ELTET

  slender spikerush · Cyperaceae 4 counties
• 
  Eleocharis tricostata Torr. Native ELTR5

  three-angle spikerush · Cyperaceae 1 county
• 
  Eleocharis tuberculosa (Michx.) Roem. & Schult. Native ELTU

  cone-cup spikerush · Cyperaceae 2 counties
• 
  Elodea canadensis Michx. Native ELCA7

  Canadian waterweed · Hydrocharitaceae 2 counties
• 
  Elodea nuttallii (Planch.) H. St. John Native ELNU2

  western waterweed · Hydrocharitaceae 1 county
• 
  Elymus hystrix L. Native ELHY

  eastern bottlebrush grass · Poaceae 1 county
• 
  Elymus hystrix L. var. hystrix Native ELHYH

  eastern bottlebrush grass · Poaceae 1 county
• 
  Elymus macgregorii R. Brooks & J.J.N. Campb. Native ELMA

  early wildrye · Poaceae 1 county
• 
  Elymus repens (L.) Gould Introduced ELRE4

  quackgrass · Poaceae 4 counties
• 
  Elymus riparius Wiegand Native ELRI

  riverbank wildrye · Poaceae 2 counties
• 
  Elymus villosus Muhl. ex Willd. Native ELVI

  hairy wildrye · Poaceae 1 county
• 
  Elymus virginicus L. Native ELVI3

  Virginia wildrye · Poaceae 5 counties
• 
  Epifagus virginiana (L.) W.P.C. Barton Native EPVI2

  beechdrops · Orobanchaceae 2 counties
• 
  Epigaea repens L. Native EPRE2

  trailing arbutus · Ericaceae 3 counties
• 
  Epilobium ciliatum Raf. Native EPCI

  fringed willowherb · Onagraceae 1 county
• 
  Epilobium ciliatum Raf. ssp. glandulosum (Lehm.) Hoch & P.H. Raven Native EPCIG

  fringed willowherb · Onagraceae 1 county
• 
  Epilobium coloratum Biehler Native EPCO

  purpleleaf willowherb · Onagraceae 4 counties
• 
  Epilobium hirsutum L. Introduced EPHI

  codlins and cream · Onagraceae 3 counties
• 
  Epilobium leptophyllum Raf. Native EPLE2

  bog willowherb · Onagraceae 2 counties
• 
  Epilobium palustre L. Native EPPA

  marsh willowherb · Onagraceae 2 counties
• 
  Epilobium strictum Muhl. ex Spreng. Native EPST

  downy willowherb · Onagraceae 2 counties
• 
  Equisetum arvense L. Native EQAR

  field horsetail · Equisetaceae 5 counties
• 
  Equisetum fluviatile L. Native EQFL

  water horsetail · Equisetaceae 3 counties
• 
  Equisetum hyemale L. Native EQHY

  scouringrush horsetail · Equisetaceae 4 counties
• 
  Equisetum hyemale L. var. affine (Engelm.) A.A. Eaton Native EQHYA

  scouringrush horsetail · Equisetaceae 4 counties
• 
  Equisetum sylvaticum L. Native EQSY

  woodland horsetail · Equisetaceae 4 counties
• 
  Eragrostis capillaris (L.) Nees Native ERCA

  lace grass · Poaceae 1 county
• 
  Eragrostis cilianensis (All.) Vign. ex Janchen Introduced ERCI

  stinkgrass · Poaceae 3 counties
• 
  Eragrostis minor Host Introduced ERMI5

  little lovegrass · Poaceae 1 county
• 
  Eragrostis pectinacea (Michx.) Nees ex Steud. Native ERPE

  tufted lovegrass · Poaceae 2 counties
• 
  Eragrostis pectinacea (Michx.) Nees ex Steud. var. pectinacea Native ERPEP2

  tufted lovegrass · Poaceae 2 counties
• 
  Eragrostis pilosa (L.) P. Beauv. Introduced ERPI2

  Indian lovegrass · Poaceae 1 county
• 
  Eragrostis spectabilis (Pursh) Steud. Native ERSP

  purple lovegrass · Poaceae 4 counties
• 
  Erigeron annuus (L.) Pers. Native ERAN

  eastern daisy fleabane · Asteraceae 5 counties
• 
  Erigeron strigosus Muhl. ex Willd. Native ERST3

  prairie fleabane · Asteraceae 5 counties
• 
  Eriocaulon aquaticum (Hill) Druce Native ERAQ2

  sevenangle pipewort · Eriocaulaceae 3 counties
• 
  Eriophorum gracile W.D.J. Koch Native ERGR8

  slender cottongrass · Cyperaceae 1 county
• 
  Eriophorum gracile W.D.J. Koch var. gracile Native ERGRG2

  slender cottongrass · Cyperaceae 1 county
• 
  Eriophorum tenellum Nutt. Native ERTE12

  fewnerved cottongrass · Cyperaceae 3 counties
• 
  Eriophorum vaginatum L. Native ERVA4

  tussock cottongrass · Cyperaceae 1 county
• 
  Eriophorum vaginatum L. var. spissum (Fernald) B. Boivin Native ERVAS

  tussock cottongrass · Cyperaceae 1 county
• 
  Eriophorum virginicum L. Native ERVI8

  tawny cottongrass · Cyperaceae 5 counties
• 
  Eriophorum viridicarinatum (Engelm.) Fernald Native ERVI9

  thinleaf cottonsedge · Cyperaceae 1 county
• 
  Erodium cicutarium (L.) L'Hér. ex Aiton Introduced ERCI6

  redstem stork's bill · Geraniaceae 1 county
• 
  Erodium cicutarium (L.) L'Hér. ex Aiton ssp. cicutarium Introduced ERCIC

  redstem stork's bill · Geraniaceae 1 county
• 
  Erysimum cheiranthoides L. Introduced ERCH9

  wormseed wallflower · Brassicaceae 1 county
• 
  Erythronium americanum Ker Gawl. Native ERAM5

  dogtooth violet · Liliaceae 4 counties
• 
  Erythronium americanum Ker Gawl. ssp. americanum Native ERAMA2

  dogtooth violet · Liliaceae 4 counties
• 
  Eubotrys racemosus (L.) Nutt. Native EURA14

  swamp doghobble · Ericaceae 5 counties
• 
  Euonymus alatus (Thunb.) Siebold Introduced EUAL13

  burningbush · Celastraceae 1 county
• 
  Euonymus alatus (Thunb.) Siebold var. alatus Introduced EUALA2

  burningbush · Celastraceae 1 county
• 
  Euonymus atropurpureus Jacq. Native EUAT5

  burningbush · Celastraceae 1 county
• 
  Euonymus atropurpureus Jacq. var. atropurpureus Native EUATA2

  eastern wahoo · Celastraceae 1 county
• 
  Euonymus europaeus L. Introduced EUEU7

  European spindletree · Celastraceae 2 counties
• 
  Eupatorium hyssopifolium L. Native EUHY

  hyssopleaf thoroughwort · Asteraceae 3 counties
• 
  Eupatorium novae-angliae (Fernald ) V.I. Sullivan ex A. Haines & Sorrie Native EUNO

  New England justiceweed · Asteraceae 1 county
• 
  Eupatorium perfoliatum L. Native EUPE3

  common boneset · Asteraceae 4 counties
• 
  Eupatorium perfoliatum L. var. perfoliatum Native EUPEP

  common boneset · Asteraceae 4 counties
• 
  Eupatorium rotundifolium L. Native EURO4

  roundleaf thoroughwort · Asteraceae 4 counties
• 
  Eupatorium serotinum Michx. Native EUSE2

  lateflowering thoroughwort · Asteraceae 1 county
• 
  Eupatorium sessilifolium L. Native EUSE3

  upland boneset · Asteraceae 1 county
• 
  Euphorbia corollata L. Native EUCO10

  flowering spurge · Euphorbiaceae 2 counties
• 
  Euphorbia cyparissias L. Introduced EUCY2

  cypress spurge · Euphorbiaceae 5 counties
• 
  Euphorbia davidii Subils Introduced EUDA5

  David's spurge · Euphorbiaceae 1 county
• 
  Euphorbia marginata Pursh Native EUMA8

  snow on the mountain · Euphorbiaceae 2 counties
• 
  Euphrasia stricta D. Wolff ex J.F. Lehm. Introduced EUST7

  drug eyebright · Scrophulariaceae 1 county
• 
  Eurybia macrophylla (L.) Cass. Native EUMA27

  bigleaf aster · Asteraceae 2 counties
• 
  Eurybia radula (Aiton) G.L. Nesom Native EURA10

  low rough aster · Asteraceae 1 county
• 
  Eurybia schreberi (Nees) Nees Native EUSC5

  Schreber's aster · Asteraceae 1 county
• 
  Eurybia spectabilis (Aiton) G.L. Nesom Native EUSP3

  eastern showy aster · Asteraceae 3 counties
• ⚘
  Eurybia ×herveyi (A. Gray) G.L. Nesom [macrophylla × spectabilis] Native EUHE9

  aster · Asteraceae 1 county
• 
  Euthamia caroliniana (L.) Greene ex Porter & Britton Native EUCA26

  slender goldentop · Asteraceae 4 counties
• 
  Euthamia graminifolia (L.) Nutt. Native EUGR5

  flat-top goldentop · Asteraceae 5 counties
• 
  Euthamia graminifolia (L.) Nutt. var. graminifolia Native EUGRG

  flat-top goldentop · Asteraceae 5 counties
• 
  Eutrochium dubium (Willd. ex Poir.) E.E. Lamont Native EUDU6

  coastal plain joe pye weed · Asteraceae 4 counties
• 
  Eutrochium fistulosum (Barratt) E.E. Lamont Native EUFI14

  trumpetweed · Asteraceae 1 county
• 
  Eutrochium maculatum (L.) E.E. Lamont Native EUMA9

  spotted joe pye weed · Asteraceae 2 counties
• 
  Eutrochium maculatum (L.) E.E. Lamont var. maculatum Native EUMAM4

  spotted joe pye weed · Asteraceae 2 counties
• 
  Eutrochium purpureum (L.) E.E. Lamont Native EUPU21

  sweetscented joe pye weed · Asteraceae 2 counties
• 
  Eutrochium purpureum (L.) E.E. Lamont var. purpureum Native EUPUP4

  sweetscented joe pye weed · Asteraceae 2 counties
• 
  Fagopyrum esculentum Moench Introduced FAES2

  buckwheat · Polygonaceae 3 counties
• 
  Fagus grandifolia Ehrh. Native FAGR

  American beech · Fagaceae 3 counties
• 
  Festuca brevipila Tracey Introduced FEBR7

  hard fescue · Poaceae 5 counties
• 
  Festuca rubra L. Both FERU2

  red fescue · Poaceae 4 counties
• 
  Festuca rubra L. ssp. rubra Native FERUR2

  red fescue · Poaceae 4 counties
• 
  Festuca subverticillata (Pers.) Alexeev Native FESU3

  nodding fescue · Poaceae 2 counties
• 
  Fimbristylis autumnalis (L.) Roem. & Schult. Native FIAU2

  slender fimbry · Cyperaceae 4 counties
• 
  Fragaria vesca L. Native FRVE

  woodland strawberry · Rosaceae 2 counties
• 
  Fragaria virginiana Duchesne Native FRVI

  Virginia strawberry · Rosaceae 5 counties
• 
  Fragaria virginiana Duchesne ssp. virginiana Native FRVIV

  Virginia strawberry · Rosaceae 5 counties
• ⚘
  Fragaria ×ananassa (Weston) Duchesne ex Rozier (pro sp.) [chiloensis × virginiana] Native FRAN

  strawberry · Rosaceae 4 counties
• ⚘
  Fragaria ×ananassa (Weston) Duchesne ex Rozier ssp. ananassa Native FRANA3

  strawberry · Rosaceae 4 counties
• 
  Frangula alnus Mill. Introduced FRAL4

  glossy buckthorn · Rhamnaceae 2 counties
• 
  Fraxinus americana L. Native FRAM2

  white ash · Oleaceae 5 counties
• 
  Fraxinus nigra Marshall Native FRNI

  black ash · Oleaceae 2 counties
• 
  Fraxinus pennsylvanica Marshall Native FRPE

  green ash · Oleaceae 4 counties
• 
  Fuirena pumila (Torr.) Spreng. Native FUPU

  dwarf umbrella-sedge · Cyperaceae 2 counties
• 
  Galearis spectabilis (L.) Raf. Native GASP5

  showy orchid · Orchidaceae 1 county
• 
  Galeopsis tetrahit L. Introduced GATE2

  brittlestem hempnettle · Lamiaceae 1 county
• 
  Galeopsis tetrahit L. var. tetrahit Introduced GATET2

  brittlestem hempnettle · Lamiaceae 1 county
• 
  Galinsoga parviflora Cav. Introduced GAPA2

  gallant soldier · Asteraceae 1 county
• 
  Galinsoga quadriradiata Cav. Introduced GAQU

  shaggy soldier · Asteraceae 3 counties
• 
  Galium aparine L. Native GAAP2

  stickywilly · Rubiaceae 5 counties
• 
  Galium asprellum Michx. Native GAAS2

  rough bedstraw · Rubiaceae 3 counties
• 
  Galium circaezans Michx. Native GACI2

  licorice bedstraw · Rubiaceae 3 counties
• 
  Galium lanceolatum Torr. Native GALA3

  lanceleaf wild licorice · Rubiaceae 1 county
• 
  Galium mollugo L. Introduced GAMO

  false baby's breath · Rubiaceae 3 counties
• 
  Galium obtusum Bigelow Native GAOB

  bluntleaf bedstraw · Rubiaceae 2 counties
• 
  Galium obtusum Bigelow ssp. obtusum Native GAOBO

  bluntleaf bedstraw · Rubiaceae 2 counties
• 
  Galium palustre L. Native GAPA3

  common marsh bedstraw · Rubiaceae 1 county
• 
  Galium pilosum Aiton Native GAPI2

  hairy bedstraw · Rubiaceae 4 counties
• 
  Galium pilosum Aiton var. pilosum Native GAPIP3

  hairy bedstraw · Rubiaceae 4 counties
• 
  Galium tricornutum Dandy Introduced GATR6

  roughfruit corn bedstraw · Rubiaceae 1 county
• 
  Galium trifidum L. Native GATR2

  threepetal bedstraw · Rubiaceae 5 counties
• 
  Galium trifidum L. ssp. trifidum Native GATRT5

  threepetal bedstraw · Rubiaceae 5 counties
• 
  Galium triflorum Michx. Native GATR3

  fragrant bedstraw · Rubiaceae 2 counties
• 
  Galium verum L. Introduced GAVE

  Yellow Spring bedstraw · Rubiaceae 5 counties
• 
  Galium verum L. var. verum Introduced GAVEV

  Yellow Spring bedstraw · Rubiaceae 5 counties
• 
  Gamochaeta purpurea (L.) Cabrera Native GAPU3

  spoonleaf purple everlasting · Asteraceae 3 counties
• 
  Gaultheria hispidula (L.) Muhl. ex Bigelow Native GAHI2

  creeping snowberry · Ericaceae 1 county
• 
  Gaultheria procumbens L. Native GAPR2

  eastern teaberry · Ericaceae 3 counties
• 
  Gaylussacia baccata (Wangenh.) K. Koch Native GABA

  black huckleberry · Ericaceae 5 counties
• 
  Gaylussacia dumosa (Andrews) Torr. & A. Gray Native GADU

  dwarf huckleberry · Ericaceae 2 counties
• 
  Gaylussacia frondosa (L.) Torr. & A. Gray ex Torr. Native GAFR2

  blue huckleberry · Ericaceae 4 counties
• 
  Genista tinctoria L. Introduced GETI

  Dyer's greenweed · Fabaceae 2 counties
• 
  Gentianopsis crinita (Froel.) Ma Native GECR2

  greater fringed gentian · Gentianaceae 1 county
• 
  Geranium carolinianum L. Native GECA5

  Carolina geranium · Geraniaceae 3 counties
• 
  Geranium carolinianum L. var. sphaerospermum (Fernald) Breitung Native GECAS

  Carolina geranium · Geraniaceae 3 counties
• 
  Geranium maculatum L. Native GEMA

  spotted geranium · Geraniaceae 5 counties
• 
  Geranium robertianum L. Both GERO

  Robert geranium · Geraniaceae 1 county
• 
  Geranium robertianum L. ssp. robertianum Native GEROR2

  Robert geranium · Geraniaceae 1 county
• 
  Geranium sanguineum L. Introduced GESA2

  bloody geranium · Geraniaceae 1 county
• 
  Geum aleppicum Jacq. Native GEAL3

  yellow avens · Rosaceae 1 county
• 
  Geum canadense Jacq. Native GECA7

  white avens · Rosaceae 5 counties
• 
  Geum canadense Jacq. var. canadense Native GECAC6

  white avens · Rosaceae 5 counties
• 
  Geum laciniatum Murray Native GELA

  rough avens · Rosaceae 1 county
• 
  Geum rivale L. Native GERI2

  purple avens · Rosaceae 1 county
• 
  Geum urbanum L. Introduced GEUR

  herb bennet · Rosaceae 1 county
• 
  Geum virginianum L. Native GEVI4

  cream avens · Rosaceae 1 county
• 
  Glaucium flavum Crantz Introduced GLFL

  yellow hornpoppy · Papaveraceae 3 counties
• 
  Glaux maritima L. Native GLMA

  sea milkwort · Primulaceae 1 county
• 
  Glechoma hederacea L. Introduced GLHE2

  ground ivy · Lamiaceae 4 counties
• 
  Glossostigma cleistanthum W.R. Barker Introduced GLCL3

  mudmats · Scrophulariaceae 1 county
• 
  Glyceria acutiflora Torr. Native GLAC

  creeping mannagrass · Poaceae 4 counties
• 
  Glyceria canadensis (Michx.) Trin. Native GLCA

  rattlesnake mannagrass · Poaceae 4 counties
• 
  Glyceria melicaria (Michx.) F.T. Hubbard Native GLME2

  melic mannagrass · Poaceae 1 county
• 
  Glyceria obtusa (Muhl.) Trin. Native GLOB

  Atlantic mannagrass · Poaceae 3 counties
• 
  Glyceria septentrionalis Hitchc. Native GLSE3

  floating mannagrass · Poaceae 3 counties
• 
  Glyceria striata (Lam.) Hitchc. Native GLST

  fowl mannagrass · Poaceae 4 counties
• 
  Gnaphalium uliginosum L. Introduced GNUL

  marsh cudweed · Asteraceae 3 counties
• 
  Goodyera pubescens (Willd.) R. Br. Native GOPU

  downy rattlesnake plantain · Orchidaceae 2 counties
• 
  Goodyera tesselata Lodd. Native GOTE

  checkered rattlesnake plantain · Orchidaceae 1 county
• 
  Gratiola aurea Pursh Native GRAU

  golden hedgehyssop · Scrophulariaceae 3 counties
• 
  Gratiola neglecta Torr. Native GRNE

  clammy hedgehyssop · Scrophulariaceae 3 counties
• 
  Grindelia squarrosa (Pursh) Dunal Native GRSQ

  curlycup gumweed · Asteraceae 1 county
• 
  Grindelia squarrosa (Pursh) Dunal var. squarrosa Native GRSQS2

  curlycup gumweed · Asteraceae 1 county
• 
  Gymnocarpium dryopteris (L.) Newman Native GYDR

  western oakfern · Dryopteridaceae 1 county
• 
  Gypsophila elegans M. Bieb. Introduced GYEL

  showy baby's-breath · Caryophyllaceae 1 county
• 
  Gypsophila muralis L. Introduced GYMU

  low baby's-breath · Caryophyllaceae 1 county
• 
  Hackelia virginiana (L.) I.M. Johnst. Native HAVI2

  beggarslice · Boraginaceae 1 county
• 
  Halesia tetraptera Ellis Native HATE3

  mountain silverbell · Styracaceae 1 county
• 
  Halesia tetraptera Ellis var. tetraptera Native HATET

  mountain silverbell · Styracaceae 1 county
• 
  Hamamelis virginiana L. Native HAVI4

  American witchhazel · Hamamelidaceae 4 counties
• 
  Hasteola suaveolens (L.) Pojark. Native HASU3

  false Indian plantain · Asteraceae 2 counties
• 
  Hedeoma hispida Pursh Native HEHI

  rough false pennyroyal · Lamiaceae 1 county
• 
  Hedeoma pulegioides (L.) Pers. Native HEPU

  American false pennyroyal · Lamiaceae 3 counties
• 
  Helenium autumnale L. Native HEAU

  common sneezeweed · Asteraceae 1 county
• 
  Helenium autumnale L. var. autumnale Native HEAUA

  common sneezeweed · Asteraceae 1 county
• 
  Helenium flexuosum Raf. Native HEFL

  purplehead sneezeweed · Asteraceae 2 counties
• 
  Helianthemum bicknellii Fernald Native HEBI2

  hoary frostweed · Cistaceae 3 counties
• 
  Helianthemum canadense (L.) Michx. Native HECA3

  longbranch frostweed · Cistaceae 5 counties
• 
  Helianthemum dumosum (E.P. Bicknell) Fernald Native HEDU

  bushy frostweed · Cistaceae 2 counties
• 
  Helianthemum propinquum E.P. Bicknell Native HEPR

  low frostweed · Cistaceae 1 county
• 
  Helianthus annuus L. Native HEAN3

  common sunflower · Asteraceae 3 counties
• 
  Helianthus debilis Nutt. Native HEDE4

  cucumberleaf sunflower · Asteraceae 1 county
• 
  Helianthus debilis Nutt. ssp. cucumerifolius (Torr. & A. Gray) Heiser Native HEDEC2

  cucumberleaf sunflower · Asteraceae 1 county
• 
  Helianthus decapetalus L. Native HEDE

  thinleaf sunflower · Asteraceae 3 counties
• 
  Helianthus divaricatus L. Native HEDI2

  woodland sunflower · Asteraceae 3 counties
• 
  Helianthus mollis Lam. Native HEMO2

  ashy sunflower · Asteraceae 1 county
• 
  Helianthus strumosus L. Native HEST

  paleleaf woodland sunflower · Asteraceae 3 counties
• 
  Helianthus tuberosus L. Native HETU

  Jerusalem artichoke · Asteraceae 3 counties
• ⚘
  Helianthus ×laetiflorus Pers. (pro sp.) [pauciflorus × tuberosus] Native HELA

  cheerful sunflower · Asteraceae 4 counties
• 
  Hemerocallis fulva (L.) L. Introduced HEFU

  orange daylily · Liliaceae 1 county
• 
  Hepatica nobilis Schreb. Native HENO2

  hepatica · Ranunculaceae 2 counties
• 
  Hepatica nobilis Schreb. var. obtusa (Pursh) Steyerm. Native HENOO

  roundlobe hepatica · Ranunculaceae 2 counties
• 
  Heracleum maximum W. Bartram Native HEMA80

  common cowparsnip · Apiaceae 3 counties
• 
  Hesperis matronalis L. Introduced HEMA3

  dames rocket · Brassicaceae 3 counties
• 
  Hibiscus moscheutos L. Native HIMO

  crimsoneyed rosemallow · Malvaceae 3 counties
• 
  Hibiscus trionum L. Introduced HITR

  flower of an hour · Malvaceae 1 county
• 
  Hieracium aurantiacum L. Introduced HIAU

  orange hawkweed · Asteraceae 3 counties
• 
  Hieracium caespitosum Dumort. Introduced HICA10

  meadow hawkweed · Asteraceae 3 counties
• 
  Hieracium gronovii L. Native HIGR3

  queendevil · Asteraceae 3 counties
• ⚘
  Hieracium kalmii L. Native HIKA2

  Kalm's hawkweed · Asteraceae 3 counties
• ⚘
  Hieracium kalmii L. var. fasciculatum (Pursh) Lepage Native HIKAF

  Canadian hawkweed · Asteraceae 3 counties
• 
  Hieracium paniculatum L. Native HIPA2

  Allegheny hawkweed · Asteraceae 2 counties
• 
  Hieracium pilosella L. Introduced HIPI

  mouseear hawkweed · Asteraceae 3 counties
• 
  Hieracium pilosella L. var. pilosella Introduced HIPIP

  mouseear hawkweed · Asteraceae 3 counties
• 
  Hieracium piloselloides Vill. Introduced HIPI2

  tall hawkweed · Asteraceae 5 counties
• 
  Hieracium scabrum Michx. Native HISC

  rough hawkweed · Asteraceae 3 counties
• 
  Hieracium scabrum Michx. var. scabrum Native HISCS

  rough hawkweed · Asteraceae 3 counties
• 
  Hieracium venosum L. Native HIVE

  rattlesnakeweed · Asteraceae 3 counties
• 
  Hieracium ×floribundum Wimm. & Grab. (pro sp.) [caespitosum × lactucella] Introduced HIFL3

  hawkweed · Asteraceae 2 counties
• 
  Hierochloe odorata (L.) P. Beauv. Native HIOD

  sweetgrass · Poaceae 5 counties
• 
  Holcus lanatus L. Introduced HOLA

  common velvetgrass · Poaceae 5 counties
• 
  Holosteum umbellatum L. Introduced HOUM

  jagged chickweed · Caryophyllaceae 1 county
• 
  Honckenya peploides (L.) Ehrh. Native HOPE

  seaside sandplant · Caryophyllaceae 2 counties
• 
  Honckenya peploides (L.) Ehrh. ssp. robusta (Fernald) Hultén Native HOPER2

  seaside sandplant · Caryophyllaceae 2 counties
• 
  Hordeum jubatum L. Native HOJU

  foxtail barley · Poaceae 1 county
• 
  Hordeum jubatum L. ssp. jubatum Native HOJUJ

  foxtail barley · Poaceae 1 county
• 
  Hordeum vulgare L. Introduced HOVU

  common barley · Poaceae 2 counties
• 
  Hottonia inflata Elliott Native HOIN

  American featherfoil · Primulaceae 2 counties
• 
  Houstonia caerulea L. Native HOCA4

  azure bluet · Rubiaceae 5 counties
• 
  Houstonia longifolia Gaertn. Native HOLO

  longleaf summer bluet · Rubiaceae 1 county
• 
  Hudsonia ericoides L. Native HUER

  pine barren goldenheather · Cistaceae 3 counties
• 
  Hudsonia tomentosa Nutt. Native HUTO

  woolly beachheather · Cistaceae 5 counties
• 
  Humulus japonicus Siebold & Zucc. Introduced HUJA

  Japanese hop · Cannabaceae 1 county
• 
  Humulus lupulus L. Both HULU

  common hop · Cannabaceae 3 counties
• 
  Humulus lupulus L. var. lupuloides E. Small Native HULUL

  common hop · Cannabaceae 3 counties
• 
  Huperzia lucidula (Michx.) Trevis. Native HULU2

  shining clubmoss · Lycopodiaceae 3 counties
• 
  Hydrangea paniculata Siebold Introduced HYPA

  panicled hydrangea · Hydrangeaceae 1 county
• 
  Hydrocotyle americana L. Native HYAM

  American marshpennywort · Apiaceae 2 counties
• 
  Hydrocotyle umbellata L. Native HYUM

  manyflower marshpennywort · Apiaceae 3 counties
• 
  Hylotelephium telephium (L.) H. Ohba Introduced HYTE10

  witch's moneybags · Crassulaceae 2 counties
• 
  Hylotelephium telephium (L.) H. Ohba ssp. telephium Introduced HYTET2

  witch's moneybags · Crassulaceae 2 counties
• 
  Hypericum adpressum W.P.C. Barton Native HYAD

  creeping St. Johnswort · Clusiaceae 1 county
• 
  Hypericum boreale (Britton) E.P. Bicknell Native HYBO2

  northern St. Johnswort · Clusiaceae 4 counties
• 
  Hypericum canadense L. Native HYCA7

  lesser Canadian St. Johnswort · Clusiaceae 3 counties
• 
  Hypericum ellipticum Hook. Native HYEL

  pale St. Johnswort · Clusiaceae 3 counties
• 
  Hypericum gentianoides (L.) Britton, Sterns & Poggenb. Native HYGE

  orangegrass · Clusiaceae 4 counties
• 
  Hypericum majus (A. Gray) Britton Native HYMA2

  large St. Johnswort · Clusiaceae 3 counties
• 
  Hypericum mutilum L. Native HYMU

  dwarf St. Johnswort · Clusiaceae 4 counties
• 
  Hypericum perforatum L. Introduced HYPE

  common St. Johnswort · Clusiaceae 4 counties
• 
  Hypericum prolificum L. Native HYPR

  shrubby St. Johnswort · Clusiaceae 1 county
• 
  Hypericum punctatum Lam. Native HYPU

  spotted St. Johnswort · Clusiaceae 3 counties
• 
  Hypochaeris radicata L. Introduced HYRA3

  hairy cat's ear · Asteraceae 2 counties
• 
  Hypoxis hirsuta (L.) Coville Native HYHI2

  common goldstar · Liliaceae 5 counties
• 
  Ilex glabra (L.) A. Gray Native ILGL

  inkberry · Aquifoliaceae 3 counties
• 
  Ilex laevigata (Pursh) A. Gray Native ILLA

  smooth winterberry · Aquifoliaceae 3 counties
• 
  Ilex mucronata (L.) Powell, Savolainen & Andrews Native ILMU

  catberry · Aquifoliaceae 3 counties
• 
  Ilex opaca Aiton Native ILOP

  American holly · Aquifoliaceae 4 counties
• 
  Ilex opaca Aiton var. opaca Native ILOPO

  American holly · Aquifoliaceae 4 counties
• 
  Ilex verticillata (L.) A. Gray Native ILVE

  common winterberry · Aquifoliaceae 5 counties
• 
  Impatiens balsamina L. Introduced IMBA

  spotted snapweed · Balsaminaceae 1 county
• 
  Impatiens capensis Meerb. Native IMCA

  jewelweed · Balsaminaceae 5 counties
• 
  Inula helenium L. Introduced INHE

  elecampane inula · Asteraceae 2 counties
• 
  Ionactis linariifolius (L.) Greene Native IOLI2

  flaxleaf whitetop aster · Asteraceae 4 counties
• 
  Ipomoea coccinea L. Introduced IPCO3

  redstar · Convolvulaceae 1 county
• 
  Ipomoea purpurea (L.) Roth Introduced IPPU2

  tall morning-glory · Convolvulaceae 1 county
• 
  Iris prismatica Pursh ex Ker Gawl. Native IRPR

  slender blue iris · Iridaceae 5 counties
• 
  Iris pseudacorus L. Introduced IRPS

  paleyellow iris · Iridaceae 2 counties
• 
  Iris versicolor L. Native IRVE2

  harlequin blueflag · Iridaceae 4 counties
• 
  Isoetes engelmannii A. Braun Native ISEN

  Appalachian quillwort · Isoetaceae 2 counties
• 
  Isoetes lacustris L. Native ISLA

  lake quillwort · Isoetaceae 1 county
• 
  Isoetes riparia Engelm. ex A. Braun Native ISRI

  shore quillwort · Isoetaceae 2 counties
• 
  Isoetes riparia Engelm. ex A. Braun var. riparia Native ISRIR

  shore quillwort · Isoetaceae 2 counties
• 
  Isoetes tenella Léman Native ISTE5

  spiny-spore quillwort · Isoetaceae 2 counties
• 
  Isoetes tuckermanii A. Braun Native ISTU

  Tuckerman's quillwort · Isoetaceae 1 county
• 
  Isotria verticillata Raf. Native ISVE

  large whorled pogonia · Orchidaceae 2 counties
• 
  Iva frutescens L. Native IVFR

  Jesuit's bark · Asteraceae 5 counties
• 
  Iva frutescens L. ssp. oraria (Bartlett) R.C. Jacks. Native IVFRO2

  Jesuit's bark · Asteraceae 5 counties
• 
  Japewiella dollypartoniana J.L. Allen & Lendemer Native JADO

  Dolly Parton's lichen · Lecanoraceae 1 county
• 
  Jasione montana L. Introduced JAMO

  sheepbit · Campanulaceae 2 counties
• 
  Juglans ailantifolia Carrière Introduced JUAI2

  Japanese walnut · Juglandaceae 1 county
• 
  Juglans cinerea L. Native JUCI

  butternut · Juglandaceae 2 counties
• 
  Juglans nigra L. Native JUNI

  black walnut · Juglandaceae 2 counties
• 
  Juncus acuminatus Michx. Native JUAC

  tapertip rush · Juncaceae 4 counties
• 
  Juncus articulatus L. Native JUAR4

  jointleaf rush · Juncaceae 3 counties
• 
  Juncus brachycarpus Engelm. Native JUBR

  whiteroot rush · Juncaceae 1 county
• 
  Juncus brevicaudatus (Engelm.) Fernald Native JUBR4

  narrowpanicle rush · Juncaceae 3 counties
• 
  Juncus bufonius L. Native JUBU

  toad rush · Juncaceae 3 counties
• 
  Juncus bufonius L. var. bufonius Native JUBUB

  toad rush · Juncaceae 3 counties
• 
  Juncus canadensis J. Gay ex Laharpe Native JUCA3

  Canadian rush · Juncaceae 4 counties
• 
  Juncus debilis A. Gray Native JUDE

  weak rush · Juncaceae 2 counties
• 
  Juncus dichotomus Elliott Native JUDI

  forked rush · Juncaceae 3 counties
• 
  Juncus dudleyi Wiegand Native JUDU2

  Dudley's rush · Juncaceae 1 county
• 
  Juncus effusus L. Native JUEF

  common rush · Juncaceae 4 counties
• 
  Juncus gerardii Loisel. Native JUGE

  saltmeadow rush · Juncaceae 5 counties
• 
  Juncus greenei Oakes & Tuck. Native JUGR

  Greene's rush · Juncaceae 5 counties
• 
  Juncus marginatus Rostk. Native JUMA4

  grassleaf rush · Juncaceae 3 counties
• 
  Juncus militaris Bigelow Native JUMI2

  bayonet rush · Juncaceae 3 counties
• 
  Juncus pelocarpus E. Mey. Native JUPE

  brownfruit rush · Juncaceae 4 counties
• 
  Juncus secundus P. Beauv. ex Poir. Native JUSE

  lopsided rush · Juncaceae 2 counties
• 
  Juncus tenuis Willd. Native JUTE

  poverty rush · Juncaceae 4 counties
• 
  Juniperus communis L. Native JUCO6

  common juniper · Cupressaceae 3 counties
• 
  Juniperus communis L. var. depressa Pursh Native JUCOD

  common juniper · Cupressaceae 3 counties
• 
  Juniperus virginiana L. Native JUVI

  eastern redcedar · Cupressaceae 4 counties
• 
  Juniperus virginiana L. var. virginiana Native JUVIV

  eastern redcedar · Cupressaceae 4 counties
• 
  Kalmia angustifolia L. Native KAAN

  sheep laurel · Ericaceae 5 counties
• 
  Kalmia latifolia L. Native KALA

  mountain laurel · Ericaceae 4 counties
• 
  Kalmia polifolia Wangenh. Native KAPO

  bog laurel · Ericaceae 1 county
• 
  Kickxia elatine (L.) Dumort. Introduced KIEL

  sharpleaf cancerwort · Scrophulariaceae 1 county
• 
  Krigia virginica (L.) Willd. Native KRVI

  Virginia dwarfdandelion · Asteraceae 3 counties
• 
  Lachnanthes caroliana (Lam.) Dandy Native LACA5

  Carolina redroot · Haemodoraceae 2 counties
• 
  Lactuca biennis (Moench) Fernald Native LABI

  tall blue lettuce · Asteraceae 1 county
• 
  Lactuca canadensis L. Native LACA

  Canada lettuce · Asteraceae 5 counties
• 
  Lactuca hirsuta Muhl. ex Nutt. Native LAHI

  hairy lettuce · Asteraceae 1 county
• 
  Lactuca hirsuta Muhl. ex Nutt. var. sanguinea (Bigelow) Fernald Native LAHIS2

  hairy lettuce · Asteraceae 1 county
• 
  Lactuca serriola L. Introduced LASE

  prickly lettuce · Asteraceae 3 counties
• 
  Lamium amplexicaule L. Introduced LAAM

  henbit deadnettle · Lamiaceae 3 counties
• 
  Lamium purpureum L. Introduced LAPU2

  purple deadnettle · Lamiaceae 1 county
• 
  Lamium purpureum L. var. purpureum Introduced LAPUP

  purple deadnettle · Lamiaceae 1 county
• 
  Laportea canadensis (L.) Weddell Native LACA3

  Canadian woodnettle · Urticaceae 2 counties
• 
  Larix decidua Mill. Introduced LADE2

  European larch · Pinaceae 1 county
• 
  Larix laricina (Du Roi) K. Koch Native LALA

  tamarack · Pinaceae 1 county
• 
  Lathyrus japonicus Willd. Native LAJA

  beach pea · Fabaceae 4 counties
• 
  Lathyrus latifolius L. Introduced LALA4

  perennial pea · Fabaceae 4 counties
• 
  Lathyrus palustris L. Native LAPA4

  marsh pea · Fabaceae 3 counties
• 
  Lechea intermedia Leggett ex Britton Native LEIN

  largepod pinweed · Cistaceae 4 counties
• 
  Lechea intermedia Leggett ex Britton var. intermedia Native LEINI2

  largepod pinweed · Cistaceae 4 counties
• 
  Lechea maritima Leggett ex Britton, Sterns & Poggenb. Native LEMA

  beach pinweed · Cistaceae 4 counties
• 
  Lechea maritima Leggett ex Britton, Sterns & Poggenb. var. maritima Native LEMAM

  beach pinweed · Cistaceae 4 counties
• 
  Lechea minor L. Native LEMI

  thymeleaf pinweed · Cistaceae 1 county
• 
  Lechea mucronata Raf. Native LEMU3

  hairy pinweed · Cistaceae 4 counties
• 
  Lechea pulchella Raf. Native LEPU4

  Leggett's pinweed · Cistaceae 2 counties
• 
  Lechea pulchella Raf. var. pulchella Native LEPUP2

  Leggett's pinweed · Cistaceae 2 counties
• 
  Lechea tenuifolia Michx. Native LETE

  narrowleaf pinweed · Cistaceae 2 counties
• 
  Leersia oryzoides (L.) Sw. Native LEOR

  rice cutgrass · Poaceae 4 counties
• 
  Leersia virginica Willd. Native LEVI2

  whitegrass · Poaceae 2 counties
• 
  Lemna minor L. Native LEMI3

  common duckweed · Lemnaceae 3 counties
• 
  Lemna valdiviana Phil. Native LEVA

  valdivia duckweed · Lemnaceae 1 county
• 
  Leontodon autumnalis L. Introduced LEAU2

  fall dandelion · Asteraceae 4 counties
• 
  Leontodon autumnalis L. ssp. autumnalis Introduced LEAUA

  fall dandelion · Asteraceae 4 counties
• 
  Leontodon hispidus L. Introduced LEHI

  bristly hawkbit · Asteraceae 1 county
• 
  Leonurus cardiaca L. Introduced LECA2

  common motherwort · Lamiaceae 5 counties
• 
  Leonurus cardiaca L. ssp. cardiaca Introduced LECAC7

  common motherwort · Lamiaceae 5 counties
• 
  Lepidium campestre (L.) W.T. Aiton Introduced LECA5

  field pepperweed · Brassicaceae 5 counties
• 
  Lepidium ruderale L. Introduced LERU

  roadside pepperweed · Brassicaceae 2 counties
• 
  Lepidium sativum L. Introduced LESA2

  gardencress pepperweed · Brassicaceae 1 county
• 
  Lepidium virginicum L. Native LEVI3

  Virginia pepperweed · Brassicaceae 5 counties
• 
  Lepidium virginicum L. var. virginicum Native LEVIV2

  Virginia pepperweed · Brassicaceae 5 counties
• 
  Leptochloa fusca (L.) Kunth Native LEFU21

  Malabar sprangletop · Poaceae 1 county
• 
  Leptochloa fusca (L.) Kunth ssp. fascicularis (Lam.) N. Snow Native LEFUF

  bearded sprangletop · Poaceae 1 county
• 
  Lespedeza angustifolia (Pursh) Elliott Native LEAN

  narrowleaf lespedeza · Fabaceae 1 county
• 
  Lespedeza capitata Michx. Native LECA8

  roundhead lespedeza · Fabaceae 3 counties
• 
  Lespedeza hirta (L.) Hornem. Native LEHI2

  hairy lespedeza · Fabaceae 3 counties
• 
  Lespedeza hirta (L.) Hornem. ssp. hirta Native LEHIH2

  hairy lespedeza · Fabaceae 3 counties
• 
  Lespedeza procumbens Michx. Native LEPR

  trailing lespedeza · Fabaceae 3 counties
• 
  Lespedeza stuevei Nutt. Native LEST5

  tall lespedeza · Fabaceae 3 counties
• 
  Lespedeza violacea (L.) Pers. Native LEVI6

  violet lespedeza · Fabaceae 3 counties
• 
  Lespedeza virginica (L.) Britton Native LEVI7

  slender lespedeza · Fabaceae 2 counties
• 
  Leucanthemum vulgare Lam. Introduced LEVU

  oxeye daisy · Asteraceae 5 counties
• 
  Liatris scariosa (L.) Willd. Native LISC2

  devil's bite · Asteraceae 4 counties
• 
  Liatris scariosa (L.) Willd. var. novae-angliae Lunell Native LISCN2

  New England blazing star · Asteraceae 4 counties
• 
  Ligusticum scoticum L. Native LISC3

  Scottish licorice-root · Apiaceae 2 counties
• 
  Ligusticum scoticum L. ssp. scoticum Native LISCS2

  Scottish licorice-root · Apiaceae 2 counties
• 
  Ligustrum obtusifolium Siebold & Zucc. Introduced LIOB

  border privet · Oleaceae 1 county
• 
  Ligustrum sinense Lour. Introduced LISI

  Chinese privet · Oleaceae 1 county
• 
  Ligustrum vulgare L. Introduced LIVU

  European privet · Oleaceae 2 counties
• 
  Lilaeopsis chinensis (L.) Kuntze Native LICH

  eastern grasswort · Apiaceae 1 county
• 
  Lilium canadense L. Native LICA3

  Canada lily · Liliaceae 2 counties
• 
  Lilium canadense L. ssp. canadense Native LICAC

  Canada lily · Liliaceae 2 counties
• 
  Lilium lancifolium Thunb. Introduced LILA8

  tiger lily · Liliaceae 1 county
• 
  Lilium philadelphicum L. Native LIPH

  wood lily · Liliaceae 4 counties
• 
  Lilium philadelphicum L. var. philadelphicum Native LIPHP

  wood lily · Liliaceae 4 counties
• 
  Lilium superbum L. Native LISU

  turk's-cap lily · Liliaceae 5 counties
• 
  Limonium carolinianum (Walter) Britton Native LICA17

  lavender thrift · Plumbaginaceae 5 counties
• 
  Limosella australis R. Br. Native LIAU6

  Welsh mudwort · Scrophulariaceae 2 counties
• 
  Linaria vulgaris Mill. Introduced LIVU2

  butter and eggs · Scrophulariaceae 4 counties
• 
  Lindera benzoin (L.) Blume Native LIBE3

  northern spicebush · Lauraceae 4 counties
• 
  Lindera benzoin (L.) Blume var. benzoin Native LIBEB

  northern spicebush · Lauraceae 4 counties
• 
  Lindernia dubia (L.) Pennell Native LIDU

  yellowseed false pimpernel · Scrophulariaceae 5 counties
• 
  Lindernia dubia (L.) Pennell var. anagallidea (Michx.) Cooperr. Native LIDUA

  yellowseed false pimpernel · Scrophulariaceae 5 counties
• 
  Linnaea borealis L. Native LIBO3

  twinflower · Caprifoliaceae 1 county
• 
  Linnaea borealis L. ssp. americana (Forbes) Hultén ex R.T. Clausen Native LIBOA

  twinflower · Caprifoliaceae 1 county
• 
  Linum intercursum E.P. Bicknell Native LIIN

  sandplain flax · Linaceae 1 county
• 
  Linum medium (Planch.) Britton Native LIME2

  stiff yellow flax · Linaceae 3 counties
• 
  Linum medium (Planch.) Britton var. texanum (Planch.) Fernald Native LIMET

  stiff yellow flax · Linaceae 3 counties
• 
  Linum striatum Walter Native LIST

  ridged yellow flax · Linaceae 3 counties
• 
  Linum usitatissimum L. Introduced LIUS

  common flax · Linaceae 2 counties
• 
  Linum virginianum L. Native LIVI

  woodland flax · Linaceae 3 counties
• 
  Liparis liliifolia (L.) Rich. ex Ker Gawl. Native LILI3

  brown widelip orchid · Orchidaceae 1 county
• 
  Liparis loeselii (L.) Rich. Native LILO

  yellow widelip orchid · Orchidaceae 1 county
• 
  Lipocarpha micrantha (Vahl) G. Tucker Native LIMI12

  smallflower halfchaff sedge · Cyperaceae 3 counties
• 
  Liquidambar styraciflua L. Native LIST2

  sweetgum · Hamamelidaceae 1 county
• 
  Liriodendron tulipifera L. Native LITU

  tuliptree · Magnoliaceae 1 county
• 
  Lobelia cardinalis L. Native LOCA2

  cardinalflower · Campanulaceae 4 counties
• 
  Lobelia dortmanna L. Native LODO

  Dortmann's cardinalflower · Campanulaceae 2 counties
• 
  Lobelia inflata L. Native LOIN

  Indian-tobacco · Campanulaceae 3 counties
• 
  Lobelia spicata Lam. Native LOSP

  palespike lobelia · Campanulaceae 3 counties
• 
  Lobularia maritima (L.) Desv. Introduced LOMA

  sweet alyssum · Brassicaceae 1 county
• 
  Lolium perenne L. Introduced LOPE

  perennial ryegrass · Poaceae 2 counties
• 
  Lonicera dioica L. Native LODI2

  limber honeysuckle · Caprifoliaceae 3 counties
• 
  Lonicera japonica Thunb. Introduced LOJA

  Japanese honeysuckle · Caprifoliaceae 4 counties
• 
  Lonicera morrowii A. Gray Introduced LOMO2

  Morrow's honeysuckle · Caprifoliaceae 3 counties
• 
  Lonicera sempervirens L. Native LOSE

  trumpet honeysuckle · Caprifoliaceae 2 counties
• 
  Lonicera tatarica L. Introduced LOTA

  Tatarian honeysuckle · Caprifoliaceae 1 county
• 
  Lonicera villosa (Michx.) Schult. Native LOVI

  mountain fly honeysuckle · Caprifoliaceae 2 counties
• 
  Lonicera xylosteum L. Introduced LOXY

  dwarf honeysuckle · Caprifoliaceae 1 county
• ⚘
  Lonicera ×bella Zabel [morrowii × tatarica] Introduced LOBE

  showy fly honeysuckle · Caprifoliaceae 1 county
• 
  Lotus corniculatus L. Introduced LOCO6

  bird's-foot trefoil · Fabaceae 4 counties
• 
  Lotus corniculatus L. var. corniculatus Introduced LOCOC5

  bird's-foot trefoil · Fabaceae 4 counties
• 
  Ludwigia alternifolia L. Native LUAL2

  seedbox · Onagraceae 5 counties
• 
  Ludwigia palustris (L.) Elliott Native LUPA

  marsh seedbox · Onagraceae 3 counties
• 
  Ludwigia sphaerocarpa Elliott Native LUSP

  globefruit primrose-willow · Onagraceae 2 counties
• 
  Lunaria annua L. Introduced LUAN

  annual honesty · Brassicaceae 1 county
• 
  Lupinus perennis L. Native LUPE3

  sundial lupine · Fabaceae 3 counties
• 
  Lupinus perennis L. ssp. perennis Native LUPEP

  sundial lupine · Fabaceae 3 counties
• 
  Lupinus perennis L. ssp. perennis var. perennis Native LUPEP3

  sundial lupine · Fabaceae 3 counties
• 
  Lychnis coronaria (L.) Desr. Introduced LYCO

  rose campion · Caryophyllaceae 1 county
• 
  Lychnis flos-cuculi L. Introduced LYFL3

  ragged robin · Caryophyllaceae 2 counties
• 
  Lycium barbarum L. Introduced LYBA4

  matrimony vine · Solanaceae 2 counties
• 
  Lycopodiella inundata (L.) Holub Native LYIN2

  inundated clubmoss · Lycopodiaceae 4 counties
• ⚘
  Lycopodiella ×gilmanii A. Haines [appressa × inundata] Native LYGI2

  Lycopodiaceae 2 counties
• 
  Lycopodium clavatum L. Native LYCL

  running clubmoss · Lycopodiaceae 2 counties
• 
  Lycopodium digitatum Dill. ex A. Braun Native LYDI3

  fan clubmoss · Lycopodiaceae 3 counties
• 
  Lycopodium obscurum L. Native LYOB

  rare clubmoss · Lycopodiaceae 4 counties
• 
  Lycopodium tristachyum Pursh Native LYTR

  deeproot clubmoss · Lycopodiaceae 3 counties
• 
  Lycopus americanus Muhl. ex W.P.C. Barton Native LYAM

  American water horehound · Lamiaceae 4 counties
• 
  Lycopus amplectens Raf. Native LYAM2

  clasping water horehound · Lamiaceae 2 counties
• 
  Lycopus rubellus Moench Native LYRU

  taperleaf water horehound · Lamiaceae 2 counties
• 
  Lycopus uniflorus Michx. Native LYUN

  northern bugleweed · Lamiaceae 4 counties
• 
  Lycopus uniflorus Michx. var. uniflorus Native LYUNU2

  northern bugleweed · Lamiaceae 4 counties
• 
  Lycopus virginicus L. Native LYVI4

  Virginia water horehound · Lamiaceae 4 counties
• 
  Lygodium palmatum (Bernh.) Sw. Native LYPA3

  American climbing fern · Lygodiaceae 3 counties
• 
  Lyonia ligustrina (L.) DC. Native LYLI

  maleberry · Ericaceae 5 counties
• 
  Lyonia ligustrina (L.) DC. var. ligustrina Native LYLIL

  maleberry · Ericaceae 5 counties
• 
  Lysimachia ciliata L. Native LYCI

  fringed loosestrife · Primulaceae 2 counties
• 
  Lysimachia hybrida Michx. Native LYHY

  lowland yellow loosestrife · Primulaceae 3 counties
• 
  Lysimachia nummularia L. Introduced LYNU

  creeping jenny · Primulaceae 1 county
• 
  Lysimachia quadrifolia L. Native LYQU2

  whorled yellow loosestrife · Primulaceae 5 counties
• 
  Lysimachia terrestris (L.) Britton, Sterns & Poggenb. Native LYTE2

  earth loosestrife · Primulaceae 5 counties
• 
  Lysimachia thyrsiflora L. Native LYTH2

  tufted loosestrife · Primulaceae 2 counties
• 
  Lysimachia vulgaris L. Introduced LYVU

  garden yellow loosestrife · Primulaceae 2 counties
• ⚘
  Lysimachia ×producta (A. Gray) Fernald (pro sp.) [quadrifolia × terrestris] Native LYPR

  yellow loosestrife · Primulaceae 2 counties
• 
  Lythrum alatum Pursh Native LYAL4

  winged lythrum · Lythraceae 1 county
• 
  Lythrum alatum Pursh var. alatum Native LYALA4

  winged lythrum · Lythraceae 1 county
• 
  Lythrum hyssopifolium L. Introduced LYHY3

  hyssop loosestrife · Lythraceae 1 county
• 
  Lythrum salicaria L. Introduced LYSA2

  purple loosestrife · Lythraceae 4 counties
• 
  Maianthemum canadense Desf. Native MACA4

  Canada mayflower · Liliaceae 5 counties
• 
  Maianthemum racemosum (L.) Link Native MARA7

  feathery false lily of the valley · Liliaceae 4 counties
• 
  Maianthemum racemosum (L.) Link ssp. racemosum Native MARAR

  feathery false lily of the valley · Liliaceae 4 counties
• 
  Maianthemum stellatum (L.) Link Native MAST4

  starry false lily of the valley · Liliaceae 3 counties
• 
  Malus baccata (L.) Borkh. Introduced MABA

  Siberian crab apple · Rosaceae 1 county
• 
  Malus pumila Mill. Introduced MAPU

  paradise apple · Rosaceae 3 counties
• 
  Malva alcea L. Introduced MAAL

  vervain mallow · Malvaceae 2 counties
• 
  Malva neglecta Wallr. Introduced MANE

  common mallow · Malvaceae 3 counties
• 
  Marrubium vulgare L. Introduced MAVU

  horehound · Lamiaceae 2 counties
• 
  Matricaria discoidea DC. Introduced MADI6

  disc mayweed · Asteraceae 4 counties
• 
  Matricaria recutita L. Introduced MARE6

  German chamomile · Asteraceae 1 county
• 
  Matteuccia struthiopteris (L.) Todaro Native MAST

  ostrich fern · Dryopteridaceae 1 county
• 
  Medeola virginiana L. Native MEVI

  Indian cucumber · Liliaceae 2 counties
• 
  Medicago lupulina L. Introduced MELU

  black medick · Fabaceae 4 counties
• 
  Medicago sativa L. Introduced MESA

  alfalfa · Fabaceae 3 counties
• 
  Medicago sativa L. ssp. sativa Introduced MESAS

  alfalfa · Fabaceae 3 counties
• 
  Melampyrum lineare Desr. Native MELI2

  narrowleaf cowwheat · Scrophulariaceae 4 counties
• 
  Melilotus officinalis (L.) Lam. Introduced MEOF

  sweetclover · Fabaceae 4 counties
• 
  Melissa officinalis L. Introduced MEOF2

  common balm · Lamiaceae 3 counties
• 
  Mentha arvensis L. Native MEAR4

  wild mint · Lamiaceae 3 counties
• 
  Mentha spicata L. Introduced MESP3

  spearmint · Lamiaceae 1 county
• ⚘
  Mentha ×gracilis Sole (pro sp.) [arvensis × spicata] Introduced MEGR2

  gingermint · Lamiaceae 1 county
• ⚘
  Mentha ×piperita L. (pro sp.) [aquatica × spicata] Native MEPI

  peppermint · Lamiaceae 3 counties
• 
  Mentha ×villosa Huds. (pro sp.) [spicata × suaveolens] Introduced MEVI6

  mint · Lamiaceae 2 counties
• 
  Menyanthes trifoliata L. Native METR3

  buckbean · Menyanthaceae 2 counties
• 
  Mikania scandens (L.) Willd. Native MISC

  climbing hempvine · Asteraceae 3 counties
• 
  Mimulus ringens L. Native MIRI

  Allegheny monkeyflower · Scrophulariaceae 3 counties
• 
  Mimulus ringens L. var. ringens Native MIRIR

  Allegheny monkeyflower · Scrophulariaceae 3 counties
• 
  Minuartia glabra (Michx.) Mattf. Native MIGL5

  Appalachian stitchwort · Caryophyllaceae 1 county
• 
  Mirabilis nyctaginea (Michx.) MacMill. Native MINY

  heartleaf four o'clock · Nyctaginaceae 1 county
• 
  Miscanthus sinensis Andersson Introduced MISI

  Chinese silvergrass · Poaceae 1 county
• 
  Mitchella repens L. Native MIRE

  partridgeberry · Rubiaceae 3 counties
• 
  Moehringia lateriflora (L.) Fenzl Native MOLA6

  bluntleaf sandwort · Caryophyllaceae 4 counties
• 
  Mollugo verticillata L. Native MOVE

  green carpetweed · Molluginaceae 4 counties
• 
  Monarda clinopodia L. Native MOCL

  white bergamot · Lamiaceae 1 county
• 
  Monarda fistulosa L. Native MOFI

  wild bergamot · Lamiaceae 1 county
• 
  Monarda fistulosa L. ssp. fistulosa Native MOFIF

  wild bergamot · Lamiaceae 1 county
• 
  Monarda fistulosa L. ssp. fistulosa var. mollis (L.) Benth. Native MOFIM3

  wild bergamot · Lamiaceae 1 county
• 
  Monarda media Willd. Native MOME

  purple bergamot · Lamiaceae 1 county
• 
  Moneses uniflora (L.) A. Gray Native MOUN2

  single delight · Pyrolaceae 2 counties
• 
  Monotropa hypopitys L. Native MOHY3

  pinesap · Monotropaceae 4 counties
• 
  Monotropa uniflora L. Native MOUN3

  Indianpipe · Monotropaceae 4 counties
• 
  Morella pensylvanica (Mirb.) Kartesz Native MOPE6

  northern bayberry · Myricaceae 5 counties
• 
  Morus alba L. Introduced MOAL

  white mulberry · Moraceae 3 counties
• 
  Morus rubra L. Native MORU2

  red mulberry · Moraceae 1 county
• 
  Morus rubra L. var. rubra Native MORUR

  red mulberry · Moraceae 1 county
• 
  Muhlenbergia glomerata (Willd.) Trin. Native MUGL3

  spiked muhly · Poaceae 1 county
• 
  Muhlenbergia mexicana (L.) Trin. Native MUME2

  Mexican muhly · Poaceae 2 counties
• 
  Muhlenbergia schreberi J.F. Gmel. Native MUSC

  nimblewill · Poaceae 2 counties
• 
  Muhlenbergia sobolifera (Muhl. ex Willd.) Trin. Native MUSO

  rock muhly · Poaceae 1 county
• 
  Muhlenbergia sylvatica (Torr.) Torr. ex A. Gray Native MUSY

  woodland muhly · Poaceae 2 counties
• 
  Muhlenbergia uniflora (Muhl.) Fernald Native MUUN

  bog muhly · Poaceae 3 counties
• 
  Muscari botryoides (L.) Mill. Introduced MUBO

  common grape hyacinth · Liliaceae 2 counties
• 
  Myosotis arvensis (L.) Hill Introduced MYAR

  field forget-me-not · Boraginaceae 1 county
• 
  Myosotis laxa Lehm. Native MYLA

  bay forget-me-not · Boraginaceae 2 counties
• 
  Myosotis scorpioides L. Introduced MYSC

  true forget-me-not · Boraginaceae 1 county
• 
  Myosotis sylvatica Ehrh. Introduced MYSY

  woodland forget-me-not · Boraginaceae 1 county
• 
  Myosotis verna Nutt. Native MYVE

  spring forget-me-not · Boraginaceae 1 county
• 
  Myrica gale L. Native MYGA

  sweetgale · Myricaceae 4 counties
• 
  Myriophyllum farwellii Morong Native MYFA2

  Farwell's watermilfoil · Haloragaceae 1 county
• 
  Myriophyllum heterophyllum Michx. Native MYHE2

  twoleaf watermilfoil · Haloragaceae 2 counties
• 
  Myriophyllum humile (Raf.) Morong Native MYHU

  low watermilfoil · Haloragaceae 4 counties
• 
  Myriophyllum pinnatum (Walter) Britton, Sterns & Poggenb. Native MYPI

  cutleaf watermilfoil · Haloragaceae 2 counties
• 
  Myriophyllum tenellum Bigelow Native MYTE

  slender watermilfoil · Haloragaceae 2 counties
• 
  Najas flexilis (Willd.) Rostk. & Schmidt Native NAFL

  nodding waternymph · Najadaceae 4 counties
• 
  Najas gracillima (A. Braun ex Engelm.) Magnus Native NAGR

  slender waternymph · Najadaceae 3 counties
• 
  Najas guadalupensis (Spreng.) Magnus Native NAGU

  southern waternymph · Najadaceae 1 county
• 
  Najas guadalupensis (Spreng.) Magnus ssp. guadalupensis Native NAGUG

  southern waternymph · Najadaceae 1 county
• 
  Nasturtium officinale W.T. Aiton Introduced NAOF

  watercress · Brassicaceae 2 counties
• 
  Nepeta cataria L. Introduced NECA2

  catnip · Lamiaceae 2 counties
• 
  Nicandra physalodes (L.) Scop. Introduced NIPH

  apple of Peru · Solanaceae 2 counties
• 
  Nuphar lutea (L.) Sm. Native NULU

  yellow pond-lily · Nymphaeaceae 3 counties
• 
  Nuphar lutea (L.) Sm. ssp. pumila (Timm) E.O. Beal Native NULUP2

  yellow pond-lily · Nymphaeaceae 1 county
• 
  Nuphar lutea (L.) Sm. ssp. variegata (Durand) E.O. Beal Native NULUV

  varigated yellow pond-lily · Nymphaeaceae 2 counties
• 
  Nuttallanthus canadensis (L.) D.A. Sutton Native NUCA

  Canada toadflax · Scrophulariaceae 5 counties
• ⚘
  Nymphaea odorata Aiton Native NYOD

  American white waterlily · Nymphaeaceae 4 counties
• ⚘
  Nymphaea odorata Aiton ssp. odorata Native NYODO

  American white waterlily · Nymphaeaceae 4 counties
• 
  Nymphoides cordata (Elliott) Fernald Native NYCO

  little floatingheart · Menyanthaceae 2 counties
• 
  Nymphoides peltata (S.G. Gmel.) Kuntze Introduced NYPE

  yellow floatingheart · Menyanthaceae 1 county
• 
  Nyssa sylvatica Marshall Native NYSY

  blackgum · Cornaceae 5 counties
• 
  Ocimum basilicum L. Introduced OCBA

  sweet basil · Lamiaceae 1 county
• 
  Oclemena acuminata (Michx.) Greene Native OCAC

  whorled wood aster · Asteraceae 2 counties
• 
  Oclemena nemoralis (Aiton) Greene Native OCNE2

  bog aster · Asteraceae 3 counties
• ⚘
  Oclemena ×blakei (Porter) G.L. Nesom [acuminata × nemoralis] Native OCBL

  aster · Asteraceae 1 county
• 
  Oenothera fruticosa L. Native OEFR

  narrowleaf evening primrose · Onagraceae 1 county
• 
  Oenothera oakesiana (A. Gray) J.W. Robbins ex S. Watson & J.M. Coult. Native OEOA

  Oakes' evening primrose · Onagraceae 1 county
• 
  Oenothera parviflora L. Native OEPA5

  northern evening primrose · Onagraceae 4 counties
• 
  Oenothera perennis L. Native OEPE

  little evening primrose · Onagraceae 5 counties
• 
  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae 1 county
• 
  Oligoneuron rigidum (L.) Small var. rigidum Native OLRIR

  stiff goldenrod · Asteraceae 1 county
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 4 counties
• 
  Onopordum acanthium L. Introduced ONAC

  Scotch cottonthistle · Asteraceae 4 counties
• 
  Onosmodium virginianum (L.) A. DC. Native ONVI2

  wild Job's tears · Boraginaceae 1 county
• 
  Ophioglossum pusillum Raf. Native OPPU3

  northern adderstongue · Ophioglossaceae 1 county
• 
  Ornithogalum umbellatum L. Introduced ORUM

  star of Bethlehem · Liliaceae 4 counties
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 4 counties
• 
  Orontium aquaticum L. Native ORAQ

  goldenclub · Araceae 1 county
• 
  Orthilia secunda (L.) House Native ORSE

  sidebells wintergreen · Pyrolaceae 1 county
• 
  Oryzopsis asperifolia Michx. Native ORAS

  roughleaf ricegrass · Poaceae 1 county
• 
  Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCL

  Clayton's sweetroot · Apiaceae 2 counties
• 
  Osmorhiza longistylis (Torr.) DC. Native OSLO

  longstyle sweetroot · Apiaceae 3 counties
• 
  Osmunda cinnamomea L. Native OSCI

  cinnamon fern · Osmundaceae 4 counties
• 
  Osmunda claytoniana L. Native OSCL2

  interrupted fern · Osmundaceae 5 counties
• 
  Osmunda regalis L. Native OSRE

  royal fern · Osmundaceae 4 counties
• 
  Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRES

  royal fern · Osmundaceae 4 counties
• 
  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae 4 counties
• 
  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae 5 counties
• 
  Packera aurea (L.) Á. Löve & D. Löve Native PAAU3

  golden ragwort · Asteraceae 3 counties
• 
  Panax trifolius L. Native PATR2

  dwarf ginseng · Araliaceae 4 counties
• 
  Panicum capillare L. Native PACA6

  witchgrass · Poaceae 3 counties
• 
  Panicum dichotomiflorum Michx. Native PADI

  fall panicgrass · Poaceae 4 counties
• 
  Panicum miliaceum L. Introduced PAMI2

  proso millet · Poaceae 2 counties
• 
  Panicum miliaceum L. ssp. miliaceum Introduced PAMIM

  broomcorn millet · Poaceae 2 counties
• 
  Panicum philadelphicum Bernh. ex Trin. Native PAPH

  Philadelphia panicgrass · Poaceae 2 counties
• 
  Panicum rigidulum Bosc ex Nees Native PARI4

  redtop panicgrass · Poaceae 4 counties
• 
  Panicum rigidulum Bosc ex Nees var. pubescens (Vasey) Lelong Native PARIP

  redtop panicgrass · Poaceae 1 county
• 
  Panicum rigidulum Bosc ex Nees var. rigidulum Native PARIR

  redtop panicgrass · Poaceae 4 counties
• 
  Panicum verrucosum Muhl. Native PAVE2

  warty panicgrass · Poaceae 2 counties
• 
  Panicum virgatum L. Native PAVI2

  switchgrass · Poaceae 5 counties
• 
  Papaver dubium L. Introduced PADU

  blindeyes · Papaveraceae 1 county
• 
  Papaver somniferum L. Introduced PASO2

  opium poppy · Papaveraceae 1 county
• 
  Parnassia glauca Raf. Native PAGL3

  fen grass of Parnassus · Saxifragaceae 2 counties
• 
  Paronychia canadensis (L.) Alph. Wood Native PACA11

  smooth forked nailwort · Caryophyllaceae 3 counties
• 
  Parthenocissus quinquefolia (L.) Planch. Native PAQU2

  Virginia creeper · Vitaceae 5 counties
• 
  Parthenocissus vitacea (Knerr) Hitchc. Native PAVI5

  woodbine · Vitaceae 2 counties
• 
  Paspalum setaceum Michx. Native PASE5

  thin paspalum · Poaceae 4 counties
• 
  Pastinaca sativa L. Introduced PASA2

  wild parsnip · Apiaceae 1 county
• 
  Patis racemosa (Sm.) Romasch., P.M. Peterson & R. J. Soreng Native PARA2

  blackseed ricegrass · Poaceae 1 county
• 
  Pedicularis canadensis L. Native PECA

  Canadian lousewort · Scrophulariaceae 3 counties
• 
  Pedicularis canadensis L. ssp. canadensis Native PECAC3

  Canadian lousewort · Scrophulariaceae 3 counties
• 
  Pellaea atropurpurea (L.) Link Native PEAT2

  purple cliffbrake · Pteridaceae 1 county
• 
  Peltandra virginica (L.) Schott Native PEVI

  green arrow arum · Araceae 3 counties
• 
  Pennisetum glaucum (L.) R. Br. Introduced PEGL2

  pearl millet · Poaceae 3 counties
• 
  Penstemon calycosus Small Native PECA7

  longsepal beardtongue · Scrophulariaceae 1 county
• 
  Penstemon digitalis Nutt. ex Sims Native PEDI

  foxglove beardtongue · Scrophulariaceae 1 county
• 
  Penstemon hirsutus (L.) Willd. Native PEHI

  hairy beardtongue · Scrophulariaceae 1 county
• 
  Penstemon pallidus Small Native PEPA7

  pale beardtongue · Scrophulariaceae 2 counties
• 
  Penthorum sedoides L. Native PESE6

  ditch stonecrop · Crassulaceae 2 counties
• 
  Periploca graeca L. Introduced PEGR9

  silkvine · Asclepiadaceae 1 county
• 
  Petroselinum crispum (Mill.) Nyman ex A.W. Hill Introduced PECR2

  parsley · Apiaceae 1 county
• 
  Petunia axillaris (Lam.) Britton, Sterns & Poggenb. Introduced PEAX

  large white petunia · Solanaceae 1 county
• 
  Phacelia purshii Buckley Native PHPU3

  Miami mist · Hydrophyllaceae 1 county
• 
  Phalaris arundinacea L. Native PHAR3

  reed canarygrass · Poaceae 2 counties
• 
  Phalaris canariensis L. Introduced PHCA5

  annual canarygrass · Poaceae 2 counties
• 
  Phaseolus vulgaris L. Introduced PHVU

  kidney bean · Fabaceae 2 counties
• 
  Phegopteris connectilis (Michx.) Watt Native PHCO24

  long beechfern · Thelypteridaceae 3 counties
• 
  Phegopteris hexagonoptera (Michx.) Fée Native PHHE11

  broad beechfern · Thelypteridaceae 2 counties
• 
  Philadelphus coronarius L. Introduced PHCO7

  sweet mock orange · Hydrangeaceae 1 county
• 
  Phleum pratense L. Introduced PHPR3

  timothy · Poaceae 4 counties
• 
  Phlox paniculata L. Native PHPA9

  fall phlox · Polemoniaceae 3 counties
• 
  Phlox subulata L. Native PHSU3

  moss phlox · Polemoniaceae 1 county
• 
  Phlox subulata L. ssp. subulata Native PHSUS2

  moss phlox · Polemoniaceae 1 county
• 
  Phragmites australis (Cav.) Trin. ex Steud. Both PHAU7

  common reed · Poaceae 5 counties
• 
  Phragmites australis (Cav.) Trin. ex Steud. ssp. americanus Saltonst., P.M. Peterson & Soreng Native PHAUA6

  American common reed · Poaceae 2 counties
• 
  Phragmites australis (Cav.) Trin. ex Steud. ssp. australis Introduced PHAUA7

  European common reed · Poaceae 5 counties
• 
  Phryma leptostachya L. Native PHLE5

  American lopseed · Verbenaceae 2 counties
• 
  Physalis heterophylla Nees Native PHHE5

  clammy groundcherry · Solanaceae 3 counties
• 
  Physalis heterophylla Nees var. heterophylla Native PHHEH3

  clammy groundcherry · Solanaceae 3 counties
• 
  Physalis longifolia Nutt. Native PHLO4

  longleaf groundcherry · Solanaceae 2 counties
• 
  Physalis longifolia Nutt. var. subglabrata (Mack. & Bush) Cronquist Native PHLOS

  longleaf groundcherry · Solanaceae 2 counties
• 
  Physalis pubescens L. Native PHPU7

  husk tomato · Solanaceae 1 county
• 
  Physalis pubescens L. var. integrifolia (Dunal) Waterf. Native PHPUI

  husk tomato · Solanaceae 1 county
• 
  Physocarpus opulifolius (L.) Maxim. var. opulifolius Native PHOPO

  common ninebark · Rosaceae 2 counties
• 
  Physocarpus opulifolius (L.) Maxim., orth. cons. Native PHOP

  common ninebark · Rosaceae 2 counties
• 
  Physostegia virginiana (L.) Benth. Native PHVI8

  obedient plant · Lamiaceae 2 counties
• 
  Physostegia virginiana (L.) Benth. ssp. virginiana Native PHVIV

  obedient plant · Lamiaceae 2 counties
• 
  Phytolacca americana L. Native PHAM4

  American pokeweed · Phytolaccaceae 5 counties
• 
  Phytolacca americana L. var. americana Native PHAMA3

  American pokeweed · Phytolaccaceae 5 counties
• 
  Picea abies (L.) Karst. Introduced PIAB

  Norway spruce · Pinaceae 1 county
• 
  Picea mariana (Mill.) Britton, Sterns & Poggenb. Native PIMA

  black spruce · Pinaceae 1 county
• 
  Pilea pumila (L.) A. Gray Native PIPU2

  Canadian clearweed · Urticaceae 2 counties
• 
  Pilea pumila (L.) A. Gray var. pumila Native PIPUP

  Canadian clearweed · Urticaceae 2 counties
• 
  Pinus resinosa Aiton Native PIRE

  red pine · Pinaceae 1 county
• 
  Pinus rigida Mill. Native PIRI

  pitch pine · Pinaceae 4 counties
• 
  Pinus strobus L. Native PIST

  eastern white pine · Pinaceae 3 counties
• 
  Pinus sylvestris L. Introduced PISY

  Scots pine · Pinaceae 1 county
• 
  Piptochaetium avenaceum (L.) Parodi Native PIAV

  blackseed speargrass · Poaceae 1 county
• 
  Pityopsis falcata (Pursh) Nutt. Native PIFA

  sickleleaf silkgrass · Asteraceae 4 counties
• 
  Plantago aristata Michx. Native PLAR3

  largebracted plantain · Plantaginaceae 4 counties
• 
  Plantago lanceolata L. Introduced PLLA

  narrowleaf plantain · Plantaginaceae 4 counties
• 
  Plantago major L. Introduced PLMA2

  common plantain · Plantaginaceae 4 counties
• 
  Plantago maritima L. Native PLMA3

  goose tongue · Plantaginaceae 5 counties
• 
  Plantago maritima L. var. juncoides (Lam.) A. Gray Native PLMAJ

  goose tongue · Plantaginaceae 5 counties
• 
  Plantago media L. Introduced PLME

  hoary plantain · Plantaginaceae 1 county
• 
  Plantago pusilla Nutt. Native PLPU

  dwarf plantain · Plantaginaceae 2 counties
• 
  Plantago rugelii Decne. Native PLRU

  blackseed plantain · Plantaginaceae 4 counties
• 
  Plantago rugelii Decne. var. rugelii Native PLRUR

  blackseed plantain · Plantaginaceae 4 counties
• 
  Plantago virginica L. Native PLVI

  Virginia plantain · Plantaginaceae 1 county
• 
  Platanthera blephariglottis (Willd.) Lindl. Native PLBL

  white fringed orchid · Orchidaceae 1 county
• 
  Platanthera ciliaris (L.) Lindl. Native PLCI2

  yellow fringed orchid · Orchidaceae 2 counties
• 
  Platanthera clavellata (Michx.) Luer Native PLCL

  small green wood orchid · Orchidaceae 3 counties
• 
  Platanthera flava (L.) Lindl. Native PLFL

  palegreen orchid · Orchidaceae 3 counties
• 
  Platanthera flava (L.) Lindl. var. herbiola (R. Br.) Luer Native PLFLH

  palegreen orchid · Orchidaceae 3 counties
• 
  Platanthera grandiflora (Bigelow) Lindl. Native PLGR2

  greater purple fringed orchid · Orchidaceae 2 counties
• 
  Platanthera hookeri (Torr. ex A. Gray) Lindl. Native PLHO3

  Hooker's orchid · Orchidaceae 1 county
• 
  Platanthera huronensis (Nutt.) Lindl. Native PLHU2

  Huron green orchid · Orchidaceae 1 county
• 
  Platanthera orbiculata (Pursh) Lindl. Native PLOR4

  lesser roundleaved orchid · Orchidaceae 1 county
• 
  Platanthera psycodes (L.) Lindl. Native PLPS2

  lesser purple fringed orchid · Orchidaceae 2 counties
• 
  Platanus occidentalis L. Native PLOC

  American sycamore · Platanaceae 3 counties
• 
  Pluchea odorata (L.) Cass. Native PLOD

  sweetscent · Asteraceae 4 counties
• 
  Pluchea odorata (L.) Cass. var. succulenta (Fernald) Cronquist Native PLODS

  sweetscent · Asteraceae 4 counties
• 
  Poa annua L. Introduced POAN

  annual bluegrass · Poaceae 5 counties
• 
  Poa compressa L. Introduced POCO

  Canada bluegrass · Poaceae 5 counties
• 
  Poa palustris L. Native POPA2

  fowl bluegrass · Poaceae 3 counties
• 
  Poa pratensis L. Both POPR

  Kentucky bluegrass · Poaceae 5 counties
• 
  Poa pratensis L. ssp. pratensis Introduced POPRP2

  Kentucky bluegrass · Poaceae 5 counties
• 
  Poa saltuensis Fernald & Wiegand Native POSA

  oldpasture bluegrass · Poaceae 1 county
• 
  Poa trivialis L. Introduced POTR2

  rough bluegrass · Poaceae 3 counties
• 
  Podostemum ceratophyllum Michx. Native POCE3

  hornleaf riverweed · Podostemaceae 1 county
• 
  Pogonia ophioglossoides (L.) Ker Gawl. Native POOP

  snakemouth orchid · Orchidaceae 3 counties
• 
  Polemonium reptans L. Native PORE2

  Greek valerian · Polemoniaceae 1 county
• 
  Polemonium reptans L. var. reptans Native PORER

  Greek valerian · Polemoniaceae 1 county
• 
  Polygala cruciata L. Native POCR

  drumheads · Polygalaceae 2 counties
• 
  Polygala cruciata L. var. aquilonia Fernald & B.G. Schub. Native POCRA

  drumheads · Polygalaceae 2 counties
• 
  Polygala nuttallii Torr. & A. Gray Native PONU2

  Nuttall's milkwort · Polygalaceae 3 counties
• 
  Polygala paucifolia Willd. Native POPA5

  gaywings · Polygalaceae 1 county
• 
  Polygala polygama Walter Native POPO

  racemed milkwort · Polygalaceae 5 counties
• 
  Polygala sanguinea L. Native POSA3

  purple milkwort · Polygalaceae 5 counties
• 
  Polygala verticillata L. Native POVE

  whorled milkwort · Polygalaceae 3 counties
• 
  Polygonatum pubescens (Willd.) Pursh Native POPU4

  hairy Solomon's seal · Liliaceae 4 counties
• 
  Polygonella articulata (L.) Meisn. Native POAR4

  coastal jointweed · Polygonaceae 4 counties
• 
  Polygonum amphibium L. Native POAM8

  water knotweed · Polygonaceae 1 county
• 
  Polygonum arifolium L. Native POAR6

  halberdleaf tearthumb · Polygonaceae 3 counties
• 
  Polygonum aviculare L. Introduced POAV

  prostrate knotweed · Polygonaceae 5 counties
• 
  Polygonum careyi Olney Native POCA8

  Carey's smartweed · Polygonaceae 3 counties
• 
  Polygonum cilinode Michx. Native POCI

  fringed black bindweed · Polygonaceae 1 county
• 
  Polygonum convolvulus L. Introduced POCO10

  black bindweed · Polygonaceae 4 counties
• 
  Polygonum cuspidatum Siebold & Zucc. Introduced POCU6

  Japanese knotweed · Polygonaceae 5 counties
• 
  Polygonum erectum L. Native POER2

  erect knotweed · Polygonaceae 3 counties
• 
  Polygonum glaucum Nutt. Native POGL7

  seaside knotweed · Polygonaceae 1 county
• 
  Polygonum hydropiper L. Introduced POHY

  marshpepper knotweed · Polygonaceae 4 counties
• 
  Polygonum hydropiperoides Michx. Native POHY2

  swamp smartweed · Polygonaceae 4 counties
• 
  Polygonum lapathifolium L. Native POLA4

  curlytop knotweed · Polygonaceae 4 counties
• 
  Polygonum orientale L. Introduced POOR2

  kiss me over the garden gate · Polygonaceae 2 counties
• 
  Polygonum pensylvanicum L. Native POPE2

  Pennsylvania smartweed · Polygonaceae 5 counties
• 
  Polygonum persicaria L. Introduced POPE3

  spotted ladysthumb · Polygonaceae 3 counties
• 
  Polygonum punctatum Elliott Native POPU5

  dotted smartweed · Polygonaceae 4 counties
• 
  Polygonum ramosissimum Michx. Native PORA3

  bushy knotweed · Polygonaceae 5 counties
• 
  Polygonum robustius (Small) Fernald Native PORO

  stout smartweed · Polygonaceae 2 counties
• 
  Polygonum sachalinense F. Schmidt ex Maxim. Introduced POSA4

  giant knotweed · Polygonaceae 1 county
• 
  Polygonum sagittatum L. Native POSA5

  arrowleaf tearthumb · Polygonaceae 4 counties
• 
  Polygonum scandens L. Both POSC3

  climbing false buckwheat · Polygonaceae 5 counties
• 
  Polygonum setaceum Baldw. Native POSE6

  bog smartweed · Polygonaceae 1 county
• 
  Polygonum tenue Michx. Native POTE2

  pleatleaf knotweed · Polygonaceae 2 counties
• 
  Polygonum virginianum L. Native POVI2

  jumpseed · Polygonaceae 2 counties
• 
  Polypodium virginianum L. Native POVI7

  rock polypody · Polypodiaceae 3 counties
• ⚘
  Polypodium ×incognitum Cusick [appalachianum × virginianum] Native POIN6

  Hybrid rock polypody · Polypodiaceae 4 counties
• 
  Polystichum acrostichoides (Michx.) Schott Native POAC4

  Christmas fern · Dryopteridaceae 4 counties
• 
  Polystichum acrostichoides (Michx.) Schott var. acrostichoides Native POACA

  Christmas fern · Dryopteridaceae 4 counties
• 
  Pontederia cordata L. Native POCO14

  pickerelweed · Pontederiaceae 4 counties
• 
  Populus alba L. Introduced POAL7

  white poplar · Salicaceae 4 counties
• 
  Populus balsamifera L. Native POBA2

  balsam poplar · Salicaceae 1 county
• 
  Populus balsamifera L. ssp. balsamifera Native POBAB2

  balsam poplar · Salicaceae 1 county
• 
  Populus deltoides W. Bartram ex Marshall Native PODE3

  eastern cottonwood · Salicaceae 3 counties
• 
  Populus deltoides W. Bartram ex Marshall ssp. deltoides Native PODED

  eastern cottonwood · Salicaceae 3 counties
• 
  Populus grandidentata Michx. Native POGR4

  bigtooth aspen · Salicaceae 5 counties
• 
  Populus nigra L. Introduced PONI

  Lombardy poplar · Salicaceae 1 county
• 
  Populus tremuloides Michx. Native POTR5

  quaking aspen · Salicaceae 5 counties
• ⚘
  Populus ×canescens (Aiton) Sm. (pro sp.) [alba × tremula] Introduced POCA14

  gray poplar · Salicaceae 1 county
• ⚘
  Populus ×jackii Sarg. [balsamifera × deltoides] Native POJA2

  balm-of-Gilead · Salicaceae 2 counties
• 
  Portulaca grandiflora Hook. Introduced POGR7

  rose moss · Portulacaceae 1 county
• 
  Portulaca oleracea L. Both POOL

  little hogweed · Portulacaceae 1 county
• 
  Potamogeton bicupulatus Fernald Native POBI9

  snailseed pondweed · Potamogetonaceae 5 counties
• 
  Potamogeton confervoides Rchb. Native POCO12

  Tuckerman's pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton epihydrus Raf. Native POEP2

  ribbonleaf pondweed · Potamogetonaceae 5 counties
• 
  Potamogeton foliosus Raf. Native POFO3

  leafy pondweed · Potamogetonaceae 1 county
• 
  Potamogeton foliosus Raf. ssp. foliosus Native POFOF4

  leafy pondweed · Potamogetonaceae 1 county
• 
  Potamogeton gramineus L. Native POGR8

  variableleaf pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton natans L. Native PONA4

  floating pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton oakesianus J.W. Robbins Native POOA

  Oakes' pondweed · Potamogetonaceae 3 counties
• 
  Potamogeton obtusifolius Mert. & W.D.J. Koch Native POOB2

  bluntleaf pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton perfoliatus L. Native POPE7

  claspingleaf pondweed · Potamogetonaceae 5 counties
• 
  Potamogeton pulcher Tuck. Native POPU6

  spotted pondweed · Potamogetonaceae 3 counties
• 
  Potamogeton pusillus L. Native POPU7

  small pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton pusillus L. ssp. gemmiparus (J.W. Robbins) Haynes & C.B. Hellquist Native POPUG4

  small pondweed · Potamogetonaceae 1 county
• 
  Potamogeton robbinsii Oakes Native PORO2

  Robbins' pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton spirillus Tuck. Native POSP3

  spiral pondweed · Potamogetonaceae 4 counties
• 
  Potentilla argentea L. Introduced POAR8

  silver cinquefoil · Rosaceae 4 counties
• 
  Potentilla argentea L. var. argentea Introduced POARA3

  silver cinquefoil · Rosaceae 4 counties
• 
  Potentilla canadensis L. Native POCA17

  dwarf cinquefoil · Rosaceae 4 counties
• 
  Potentilla canadensis L. var. canadensis Native POCAC2

  dwarf cinquefoil · Rosaceae 4 counties
• 
  Potentilla intermedia L. Introduced POIN8

  downy cinquefoil · Rosaceae 1 county
• 
  Potentilla norvegica L. Native PONO3

  Norwegian cinquefoil · Rosaceae 5 counties
• 
  Potentilla norvegica L. ssp. monspeliensis (L.) Asch. & Graebn. Native PONOM

  Norwegian cinquefoil · Rosaceae 5 counties
• 
  Potentilla recta L. Introduced PORE5

  sulphur cinquefoil · Rosaceae 4 counties
• 
  Potentilla simplex Michx. Native POSI2

  common cinquefoil · Rosaceae 5 counties
• 
  Prenanthes altissima L. Native PRAL3

  tall rattlesnakeroot · Asteraceae 2 counties
• 
  Prenanthes serpentaria Pursh Native PRSE

  cankerweed · Asteraceae 3 counties
• 
  Prenanthes trifoliolata (Cass.) Fernald Native PRTR

  gall of the earth · Asteraceae 4 counties
• 
  Proboscidea louisianica (Mill.) Thell. Native PRLO

  ram's horn · Pedaliaceae 1 county
• 
  Proboscidea louisianica (Mill.) Thell. ssp. louisianica Native PRLOL

  ram's horn · Pedaliaceae 1 county
• 
  Proserpinaca palustris L. Native PRPA3

  marsh mermaidweed · Haloragaceae 3 counties
• 
  Proserpinaca pectinata Lam. Native PRPE

  combleaf mermaidweed · Haloragaceae 2 counties
• 
  Prunella vulgaris L. Native PRVU

  common selfheal · Lamiaceae 4 counties
• 
  Prunus americana Marshall Native PRAM

  American plum · Rosaceae 2 counties
• 
  Prunus avium (L.) L. Introduced PRAV

  sweet cherry · Rosaceae 1 county
• 
  Prunus cerasus L. Introduced PRCE

  sour cherry · Rosaceae 4 counties
• 
  Prunus domestica L. Introduced PRDO

  European plum · Rosaceae 1 county
• 
  Prunus maritima Marshall Native PRMA2

  beach plum · Rosaceae 4 counties
• 
  Prunus maritima Marshall var. maritima Native PRMAM

  beach plum · Rosaceae 4 counties
• 
  Prunus pensylvanica L. f. Native PRPE2

  pin cherry · Rosaceae 4 counties
• 
  Prunus pensylvanica L. f. var. pensylvanica Native PRPEP

  pin cherry · Rosaceae 4 counties
• 
  Prunus persica (L.) Batsch Introduced PRPE3

  peach · Rosaceae 3 counties
• 
  Prunus persica (L.) Batsch var. persica Introduced PRPEP2

  peach · Rosaceae 3 counties
• 
  Prunus serotina Ehrh. Native PRSE2

  black cherry · Rosaceae 5 counties
• 
  Prunus serotina Ehrh. var. serotina Native PRSES

  black cherry · Rosaceae 5 counties
• 
  Prunus susquehanae hort. ex Willd. Native PRSU3

  Sesquehana sandcherry · Rosaceae 3 counties
• 
  Prunus virginiana L. Native PRVI

  chokecherry · Rosaceae 2 counties
• 
  Prunus virginiana L. var. virginiana Native PRVIV

  chokecherry · Rosaceae 2 counties
• 
  Pseudognaphalium obtusifolium (L.) Hilliard & B.L. Burtt Native PSOB3

  rabbit-tobacco · Asteraceae 4 counties
• 
  Pseudognaphalium obtusifolium (L.) Hilliard & B.L. Burtt ssp. obtusifolium Native PSOBO

  rabbit-tobacco · Asteraceae 4 counties
• ⚘
  Pseudolysimachion longifolium (L.) Opiz Introduced PSLO6

  longleaf speedwell · Scrophulariaceae 2 counties
• 
  Ptelea trifoliata L. Native PTTR

  common hoptree · Rutaceae 1 county
• 
  Ptelea trifoliata L. ssp. trifoliata Native PTTRT

  common hoptree · Rutaceae 1 county
• 
  Ptelea trifoliata L. ssp. trifoliata var. trifoliata Native PTTRT2

  common hoptree · Rutaceae 1 county
• 
  Pteridium aquilinum (L.) Kuhn Native PTAQ

  western brackenfern · Dennstaedtiaceae 3 counties
• 
  Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw. ex A. Heller Native PTAQL

  western brackenfern · Dennstaedtiaceae 3 counties
• 
  Ptilimnium capillaceum (Michx.) Raf. Native PTCA

  herbwilliam · Apiaceae 4 counties
• 
  Puccinellia distans (Jacq.) Parl. Both PUDI

  weeping alkaligrass · Poaceae 1 county
• 
  Puccinellia distans (Jacq.) Parl. ssp. distans Introduced PUDID

  weeping alkaligrass · Poaceae 1 county
• 
  Puccinellia fasciculata (Torr.) E.P. Bicknell Native PUFA

  saltmarsh alkaligrass · Poaceae 3 counties
• 
  Pycnanthemum muticum (Michx.) Pers. Native PYMU

  clustered mountainmint · Lamiaceae 3 counties
• 
  Pycnanthemum tenuifolium Schrad. Native PYTE

  narrowleaf mountainmint · Lamiaceae 3 counties
• 
  Pycnanthemum verticillatum (Michx.) Pers. Native PYVE

  whorled mountainmint · Lamiaceae 3 counties
• 
  Pycnanthemum verticillatum (Michx.) Pers. var. verticillatum Native PYVEV

  whorled mountainmint · Lamiaceae 3 counties
• 
  Pycnanthemum virginianum (L.) T. Dur. & B.D. Jacks. ex B.L. Rob. & Fernald Native PYVI

  Virginia mountainmint · Lamiaceae 3 counties
• 
  Pyrola americana Sweet Native PYAM

  American wintergreen · Pyrolaceae 1 county
• 
  Pyrola chlorantha Sw. Native PYCH

  greenflowered wintergreen · Pyrolaceae 2 counties
• 
  Pyrola elliptica Nutt. Native PYEL

  waxflower shinleaf · Pyrolaceae 2 counties
• 
  Pyrus communis L. Introduced PYCO

  common pear · Rosaceae 3 counties
• ⚘
  Quercus alba L. Native QUAL

  white oak · Fagaceae 5 counties
• ⚘
  Quercus bicolor Willd. Native QUBI

  swamp white oak · Fagaceae 3 counties
• 
  Quercus coccinea Münchh. Native QUCO2

  scarlet oak · Fagaceae 3 counties
• 
  Quercus coccinea Münchh. var. coccinea Native QUCOC

  scarlet oak · Fagaceae 3 counties
• 
  Quercus ilicifolia Wangenh. Native QUIL

  bear oak · Fagaceae 3 counties
• 
  Quercus montana Willd. Native QUMO4

  chestnut oak · Fagaceae 3 counties
• 
  Quercus palustris Münchh. Native QUPA2

  pin oak · Fagaceae 3 counties
• 
  Quercus prinoides Willd. Native QUPR

  dwarf chinquapin oak · Fagaceae 4 counties
• 
  Quercus robur L. Introduced QURO2

  English oak · Fagaceae 2 counties
• 
  Quercus rubra L. Native QURU

  northern red oak · Fagaceae 3 counties
• 
  Quercus rubra L. var. ambigua (A. Gray) Fernald Native QURUA

  northern red oak · Fagaceae 3 counties
• 
  Quercus stellata Wangenh. Native QUST

  post oak · Fagaceae 1 county
• 
  Quercus velutina Lam. Native QUVE

  black oak · Fagaceae 5 counties
• 
  Ranunculus abortivus L. Native RAAB

  littleleaf buttercup · Ranunculaceae 4 counties
• 
  Ranunculus acris L. Both RAAC3

  tall buttercup · Ranunculaceae 3 counties
• 
  Ranunculus acris L. var. acris Introduced RAACA3

  showy buttercup · Ranunculaceae 3 counties
• 
  Ranunculus allegheniensis Britton Native RAAL2

  Allegheny Mountain buttercup · Ranunculaceae 1 county
• 
  Ranunculus ambigens S. Watson Native RAAM

  waterplantain spearwort · Ranunculaceae 1 county
• 
  Ranunculus bulbosus L. Introduced RABU

  St. Anthony's turnip · Ranunculaceae 4 counties
• 
  Ranunculus cymbalaria Pursh Native RACY

  alkali buttercup · Ranunculaceae 4 counties
• 
  Ranunculus ficaria L. Introduced RAFI

  fig buttercup · Ranunculaceae 1 county
• 
  Ranunculus ficaria L. var. bulbifera Marsden-Jones Introduced RAFIB

  fig buttercup · Ranunculaceae 1 county
• 
  Ranunculus flabellaris Raf. Native RAFL

  yellow water buttercup · Ranunculaceae 2 counties
• 
  Ranunculus hispidus Michx. Native RAHI

  bristly buttercup · Ranunculaceae 1 county
• 
  Ranunculus hispidus Michx. var. hispidus Native RAHIH

  bristly buttercup · Ranunculaceae 1 county
• 
  Ranunculus micranthus Nutt. Native RAMI2

  rock buttercup · Ranunculaceae 1 county
• 
  Ranunculus pensylvanicus L. f. Native RAPE2

  Pennsylvania buttercup · Ranunculaceae 1 county
• 
  Ranunculus recurvatus Poir. Native RARE2

  blisterwort · Ranunculaceae 3 counties
• 
  Ranunculus recurvatus Poir. var. recurvatus Native RARER2

  blisterwort · Ranunculaceae 3 counties
• 
  Ranunculus repens L. Introduced RARE3

  creeping buttercup · Ranunculaceae 3 counties
• 
  Ranunculus sceleratus L. Native RASC3

  cursed buttercup · Ranunculaceae 2 counties
• 
  Ranunculus sceleratus L. var. sceleratus Native RASCS

  cursed buttercup · Ranunculaceae 2 counties
• 
  Ranunculus trichophyllus Chaix Native RATR

  threadleaf crowfoot · Ranunculaceae 1 county
• 
  Ranunculus trichophyllus Chaix var. trichophyllus Native RATRT

  threadleaf crowfoot · Ranunculaceae 1 county
• 
  Raphanus raphanistrum L. Introduced RARA2

  wild radish · Brassicaceae 5 counties
• ⚘
  Raphanus sativus L. Introduced RASA2

  cultivated radish · Brassicaceae 2 counties
• 
  Reseda lutea L. Introduced RELU

  yellow mignonette · Resedaceae 1 county
• 
  Rhamnus cathartica L. Introduced RHCA3

  common buckthorn · Rhamnaceae 3 counties
• 
  Rhexia virginica L. Native RHVI

  handsome Harry · Melastomataceae 4 counties
• 
  Rhododendron canadense (L.) Torr. Native RHCA6

  rhodora · Ericaceae 2 counties
• 
  Rhododendron maximum L. Native RHMA4

  great laurel · Ericaceae 2 counties
• 
  Rhododendron periclymenoides (Michx.) Shinners Native RHPE4

  pink azalea · Ericaceae 3 counties
• 
  Rhododendron viscosum (L.) Torr. Native RHVI2

  swamp azalea · Ericaceae 4 counties
• 
  Rhus copallinum L. Native RHCO

  winged sumac · Anacardiaceae 4 counties
• 
  Rhus copallinum L. var. latifolia Engl. Native RHCOL2

  winged sumac · Anacardiaceae 4 counties
• 
  Rhus glabra L. Native RHGL

  smooth sumac · Anacardiaceae 5 counties
• 
  Rhus typhina L. Native RHTY

  staghorn sumac · Anacardiaceae 2 counties
• 
  Rhynchospora alba (L.) Vahl Native RHAL3

  white beaksedge · Cyperaceae 4 counties
• 
  Rhynchospora capitellata (Michx.) Vahl Native RHCA12

  brownish beaksedge · Cyperaceae 3 counties
• 
  Rhynchospora fusca (L.) W.T. Aiton Native RHFU

  brown beaksedge · Cyperaceae 3 counties
• 
  Rhynchospora inundata (Oakes) Fernald Native RHIN7

  narrowfruit horned beaksedge · Cyperaceae 1 county
• 
  Rhynchospora macrostachya Torr. ex A. Gray Native RHMA6

  tall horned beaksedge · Cyperaceae 3 counties
• 
  Rhynchospora scirpoides (Torr.) A. Gray Native RHSC5

  longbeak beaksedge · Cyperaceae 1 county
• 
  Rhynchospora torreyana A. Gray Native RHTO4

  Torrey's beaksedge · Cyperaceae 1 county
• 
  Ribes americanum Mill. Native RIAM2

  American black currant · Grossulariaceae 1 county
• 
  Ribes hirtellum Michx. Native RIHI

  hairystem gooseberry · Grossulariaceae 3 counties
• 
  Ribes rubrum L. Introduced RIRU80

  cultivated currant · Grossulariaceae 3 counties
• 
  Ribes triste Pall. Native RITR

  red currant · Grossulariaceae 1 county
• 
  Robinia hispida L. Native ROHI

  bristly locust · Fabaceae 3 counties
• 
  Robinia pseudoacacia L. Native ROPS

  black locust · Fabaceae 4 counties
• 
  Robinia viscosa Vent. Native ROVI

  clammy locust · Fabaceae 3 counties
• 
  Robinia viscosa Vent. var. viscosa Native ROVIV

  clammy locust · Fabaceae 3 counties
• 
  Rorippa palustris (L.) Besser Native ROPA2

  bog yellowcress · Brassicaceae 5 counties
• 
  Rorippa sylvestris (L.) Besser Introduced ROSY

  creeping yellowcress · Brassicaceae 1 county
• 
  Rosa canina L. Introduced ROCA3

  dog rose · Rosaceae 3 counties
• 
  Rosa carolina L. Native ROCA4

  Carolina rose · Rosaceae 3 counties
• 
  Rosa carolina L. var. carolina Native ROCAC

  Carolina rose · Rosaceae 3 counties
• 
  Rosa gallica L. Introduced ROGA

  French rose · Rosaceae 1 county
• 
  Rosa micrantha Borrer ex Sm. Introduced ROMI

  smallflower sweetbrier · Rosaceae 1 county
• 
  Rosa multiflora Thunb. Introduced ROMU

  multiflora rose · Rosaceae 4 counties
• 
  Rosa palustris Marshall Native ROPA

  swamp rose · Rosaceae 5 counties
• 
  Rosa rubiginosa L. Introduced RORU82

  sweetbriar rose · Rosaceae 2 counties
• 
  Rosa rugosa Thunb. Introduced RORU

  rugosa rose · Rosaceae 4 counties
• 
  Rosa virginiana Mill. Native ROVI2

  Virginia rose · Rosaceae 5 counties
• 
  Rosa virginiana Mill. var. virginiana Native ROVIV2

  Virginia rose · Rosaceae 5 counties
• 
  Rotala ramosior (L.) Koehne Native RORA

  lowland rotala · Lythraceae 2 counties
• 
  Rubus allegheniensis Porter Native RUAL

  Allegheny blackberry · Rosaceae 4 counties
• 
  Rubus allegheniensis Porter var. allegheniensis Native RUALA

  Allegheny blackberry · Rosaceae 4 counties
• 
  Rubus argutus Link Native RUAR2

  sawtooth blackberry · Rosaceae 1 county
• 
  Rubus bifrons Vest ex Tratt. Introduced RUBI

  Himalayan berry · Rosaceae 2 counties
• 
  Rubus flagellaris Willd. Native RUFL

  northern dewberry · Rosaceae 5 counties
• 
  Rubus hispidus L. Native RUHI

  bristly dewberry · Rosaceae 5 counties
• 
  Rubus idaeus L. Both RUID

  American red raspberry · Rosaceae 2 counties
• 
  Rubus occidentalis L. Native RUOC

  black raspberry · Rosaceae 4 counties
• 
  Rubus odoratus L. Native RUOD

  purpleflowering raspberry · Rosaceae 1 county
• 
  Rubus odoratus L. var. odoratus Native RUODO

  purpleflowering raspberry · Rosaceae 1 county
• 
  Rubus pensilvanicus Poir. Native RUPE3

  Pennsylvania blackberry · Rosaceae 4 counties
• 
  Rubus phoenicolasius Maxim. Introduced RUPH

  wine raspberry · Rosaceae 2 counties
• 
  Rubus pubescens Raf. Native RUPU

  dwarf red blackberry · Rosaceae 1 county
• 
  Rubus pubescens Raf. var. pubescens Native RUPUP2

  dwarf red blackberry · Rosaceae 1 county
• 
  Rubus setosus Bigelow Native RUSE

  setose blackberry · Rosaceae 3 counties
• 
  Rudbeckia hirta L. Native RUHI2

  blackeyed Susan · Asteraceae 5 counties
• 
  Rudbeckia hirta L. var. pulcherrima Farw. Native RUHIP

  blackeyed Susan · Asteraceae 5 counties
• 
  Rumex acetosella L. Introduced RUAC3

  common sheep sorrel · Polygonaceae 5 counties
• 
  Rumex altissimus Alph. Wood Native RUAL4

  pale dock · Polygonaceae 1 county
• 
  Rumex crispus L. Introduced RUCR

  curly dock · Polygonaceae 5 counties
• 
  Rumex crispus L. ssp. crispus Introduced RUCRC

  curly dock · Polygonaceae 5 counties
• 
  Rumex longifolius DC. Introduced RULO2

  dooryard dock · Polygonaceae 2 counties
• 
  Rumex maritimus L. Native RUMA4

  golden dock · Polygonaceae 1 county
• 
  Rumex obtusifolius L. Introduced RUOB

  bitter dock · Polygonaceae 4 counties
• 
  Rumex orbiculatus A. Gray Native RUOR2

  greater water dock · Polygonaceae 1 county
• 
  Rumex salicifolius Weinm. Native RUSA

  willow dock · Polygonaceae 1 county
• 
  Rumex salicifolius Weinm. var. mexicanus (Meisn.) C.L. Hitchc. Native RUSAM

  Mexican dock · Polygonaceae 1 county
• 
  Rumex verticillatus L. Native RUVE3

  swamp dock · Polygonaceae 1 county
• 
  Ruppia maritima L. Native RUMA5

  widgeongrass · Ruppiaceae 2 counties
• 
  Ruta graveolens L. Introduced RUGR3

  common rue · Rutaceae 1 county
• 
  Sabatia kennedyana Fernald Native SAKE

  Plymouth rose gentian · Gentianaceae 3 counties
• 
  Sabatia stellaris Pursh Native SAST5

  rose of Plymouth · Gentianaceae 3 counties
• 
  Sagina procumbens L. Introduced SAPR

  birdeye pearlwort · Caryophyllaceae 4 counties
• 
  Sagittaria engelmanniana J.G. Sm. Native SAEN

  Engelmann's arrowhead · Alismataceae 3 counties
• 
  Sagittaria graminea Michx. Native SAGR

  grassy arrowhead · Alismataceae 2 counties
• 
  Sagittaria graminea Michx. var. graminea Native SAGRG

  grassy arrowhead · Alismataceae 2 counties
• 
  Sagittaria latifolia Willd. Native SALA2

  broadleaf arrowhead · Alismataceae 3 counties
• 
  Sagittaria subulata (L.) Buchenau Native SASU

  awl-leaf arrowhead · Alismataceae 1 county
• 
  Sagittaria teres S. Watson Native SATE2

  slender arrowhead · Alismataceae 1 county
• 
  Salicornia bigelovii Torr. Native SABI

  dwarf saltwort · Chenopodiaceae 3 counties
• 
  Salicornia depressa Standl. Native SADE10

  Virginia glasswort · Chenopodiaceae 5 counties
• 
  Salix alba L. Introduced SAAL2

  white willow · Salicaceae 3 counties
• 
  Salix bebbiana Sarg. Native SABE2

  Bebb willow · Salicaceae 5 counties
• 
  Salix discolor Muhl. Native SADI

  pussy willow · Salicaceae 5 counties
• 
  Salix eriocephala Michx. Native SAER

  Missouri River willow · Salicaceae 4 counties
• ⚘
  Salix fragilis L. Introduced SAFR

  crack willow · Salicaceae 1 county
• 
  Salix humilis Marshall Native SAHU2

  prairie willow · Salicaceae 4 counties
• 
  Salix lucida Muhl. Native SALU

  shining willow · Salicaceae 1 county
• 
  Salix lucida Muhl. ssp. lucida Native SALUL2

  shining willow · Salicaceae 1 county
• 
  Salix nigra Marshall Native SANI

  black willow · Salicaceae 4 counties
• 
  Salix pentandra L. Introduced SAPE4

  laurel willow · Salicaceae 3 counties
• 
  Salix petiolaris Sm. Native SAPE5

  meadow willow · Salicaceae 1 county
• 
  Salix purpurea L. Introduced SAPU2

  purpleosier willow · Salicaceae 3 counties
• 
  Salix sericea Marshall Native SASE

  silky willow · Salicaceae 3 counties
• 
  Salix viminalis L. Introduced SAVI2

  basket willow · Salicaceae 1 county
• 
  Salsola kali L. Introduced SAKA

  Russian thistle · Chenopodiaceae 4 counties
• 
  Salsola kali L. ssp. kali Introduced SAKAK

  Russian thistle · Chenopodiaceae 4 counties
• 
  Salvia officinalis L. Introduced SAOF2

  kitchen sage · Lamiaceae 1 county
• 
  Sambucus nigra L. Both SANI4

  black elderberry · Caprifoliaceae 4 counties
• 
  Sambucus nigra L. ssp. canadensis (L.) R. Bolli Native SANIC4

  American black elderberry · Caprifoliaceae 4 counties
• 
  Sambucus racemosa L. Native SARA2

  red elderberry · Caprifoliaceae 1 county
• 
  Sambucus racemosa L. var. racemosa Native SARAR3

  red elderberry · Caprifoliaceae 1 county
• 
  Samolus valerandi L. Both SAVA3

  seaside brookweed · Primulaceae 2 counties
• 
  Samolus valerandi L. ssp. parviflorus (Raf.) Hultén Native SAVAP

  seaside brookweed · Primulaceae 2 counties
• 
  Sanguinaria canadensis L. Native SACA13

  bloodroot · Papaveraceae 2 counties
• 
  Sanguisorba minor Scop. Introduced SAMI3

  small burnet · Rosaceae 1 county
• 
  Sanguisorba minor Scop. ssp. balearica (Bourg. ex Nyman) M. Garm. & C. Navarro Introduced SAMIB2

  small burnet · Rosaceae 1 county
• 
  Sanicula marilandica L. Native SAMA2

  Maryland sanicle · Apiaceae 3 counties
• 
  Saponaria officinalis L. Introduced SAOF4

  bouncingbet · Caryophyllaceae 3 counties
• 
  Sarracenia purpurea L. Native SAPU4

  purple pitcherplant · Sarraceniaceae 3 counties
• 
  Sarracenia purpurea L. ssp. purpurea var. purpurea Native SAPUP6

  northern purple pitcherplant · Sarraceniaceae 3 counties
• 
  Sassafras albidum (Nutt.) Nees Native SAAL5

  sassafras · Lauraceae 5 counties
• 
  Saururus cernuus L. Native SACE

  lizard's tail · Saururaceae 1 county
• 
  Saxifraga pensylvanica L. Native SAPE8

  eastern swamp saxifrage · Saxifragaceae 1 county
• 
  Saxifraga virginiensis Michx. Native SAVI5

  early saxifrage · Saxifragaceae 3 counties
• 
  Saxifraga virginiensis Michx. var. virginiensis Native SAVIV

  early saxifrage · Saxifragaceae 3 counties
• 
  Scandix pecten-veneris L. Introduced SCPE

  shepherdsneedle · Apiaceae 1 county
• 
  Schedonorus pratensis (Huds.) P. Beauv. Introduced SCPR4

  meadow fescue · Poaceae 4 counties
• 
  Schizachyrium scoparium (Michx.) Nash Native SCSC

  little bluestem · Poaceae 3 counties
• 
  Schizachyrium scoparium (Michx.) Nash var. scoparium Native SCSCS

  little bluestem · Poaceae 3 counties
• 
  Schoenoplectiella smithii (A. Gray) Hayas. Native SCSM3

  Smith's bulrush · Cyperaceae 3 counties
• 
  Schoenoplectus americanus (Pers.) Volkart ex Schinz & R. Keller Native SCAM6

  chairmaker's bulrush · Cyperaceae 5 counties
• 
  Schoenoplectus tabernaemontani (C.C. Gmel.) Palla Native SCTA2

  softstem bulrush · Cyperaceae 4 counties
• 
  Schoenoplectus torreyi (Olney) Palla Native SCTO3

  Torrey's bulrush · Cyperaceae 1 county
• 
  Scirpus atrovirens Willd. Native SCAT2

  green bulrush · Cyperaceae 4 counties
• 
  Scirpus cyperinus (L.) Kunth Native SCCY

  woolgrass · Cyperaceae 4 counties
• 
  Scirpus expansus Fernald Native SCEX

  woodland bulrush · Cyperaceae 2 counties
• ⚘
  Scirpus ×peckii Britton (pro sp.) [atrocinctus × atrovirens × pedicellatus] Native SCPE2

  bulrush · Cyperaceae 1 county
• 
  Scleranthus annuus L. Introduced SCAN2

  German knotgrass · Caryophyllaceae 4 counties
• 
  Scleria reticularis Michx. Native SCRE

  netted nutrush · Cyperaceae 2 counties
• 
  Scleria triglomerata Michx. Native SCTR

  whip nutrush · Cyperaceae 1 county
• 
  Sclerolepis uniflora (Walter) Britton, Sterns & Poggenb. Native SCUN3

  pink bogbutton · Asteraceae 1 county
• 
  Scrophularia lanceolata Pursh Native SCLA

  lanceleaf figwort · Scrophulariaceae 3 counties
• 
  Scrophularia marilandica L. Native SCMA2

  carpenter's square · Scrophulariaceae 1 county
• 
  Scrophularia nodosa L. Native SCNO2

  woodland figwort · Scrophulariaceae 1 county
• 
  Scutellaria galericulata L. Native SCGA

  marsh skullcap · Lamiaceae 3 counties
• 
  Scutellaria lateriflora L. Native SCLA2

  blue skullcap · Lamiaceae 3 counties
• 
  Scutellaria lateriflora L. var. lateriflora Native SCLAL2

  blue skullcap · Lamiaceae 3 counties
• 
  Secale cereale L. Introduced SECE

  cereal rye · Poaceae 3 counties
• 
  Securigera varia (L.) Lassen Introduced SEVA4

  crownvetch · Fabaceae 3 counties
• 
  Sedum acre L. Introduced SEAC

  goldmoss stonecrop · Crassulaceae 1 county
• 
  Selaginella apoda (L.) Spring Native SEAP

  meadow spikemoss · Selaginellaceae 3 counties
• 
  Selaginella rupestris (L.) Spring Native SERU

  northern selaginella · Selaginellaceae 2 counties
• 
  Senecio viscosus L. Introduced SEVI2

  sticky ragwort · Asteraceae 1 county
• 
  Senecio vulgaris L. Introduced SEVU

  old-man-in-the-Spring · Asteraceae 3 counties
• 
  Senna hebecarpa (Fernald) Irwin & Barneby Native SEHE3

  American senna · Fabaceae 3 counties
• 
  Sericocarpus asteroides (L.) Britton, Sterns & Poggenb. Native SEAS3

  toothed whitetop aster · Asteraceae 3 counties
• 
  Sericocarpus linifolius (L.) Britton, Sterns & Poggenb. Native SELI5

  narrowleaf whitetop aster · Asteraceae 3 counties
• 
  Setaria faberi Herrm. Introduced SEFA

  Japanese bristlegrass · Poaceae 1 county
• 
  Setaria italica (L.) P. Beauv. Introduced SEIT

  foxtail millet · Poaceae 1 county
• 
  Setaria parviflora (Poir.) Kerguélen Native SEPA10

  marsh bristlegrass · Poaceae 2 counties
• 
  Setaria verticillata (L.) P. Beauv. Introduced SEVE3

  hooked bristlegrass · Poaceae 2 counties
• 
  Setaria viridis (L.) P. Beauv. Introduced SEVI4

  green bristlegrass · Poaceae 4 counties
• 
  Setaria viridis (L.) P. Beauv. var. viridis Introduced SEVIV

  green bristlegrass · Poaceae 4 counties
• 
  Sherardia arvensis L. Introduced SHAR2

  blue fieldmadder · Rubiaceae 1 county
• 
  Sibbaldiopsis tridentata (Aiton) Rydb. Native SITR3

  shrubby fivefingers · Rosaceae 2 counties
• 
  Sicyos angulatus L. Native SIAN

  oneseed bur cucumber · Cucurbitaceae 2 counties
• 
  Silene antirrhina L. Native SIAN2

  sleepy silene · Caryophyllaceae 4 counties
• 
  Silene armeria L. Introduced SIAR

  sweet William silene · Caryophyllaceae 3 counties
• 
  Silene caroliniana Walter Native SICA6

  sticky catchfly · Caryophyllaceae 1 county
• 
  Silene caroliniana Walter ssp. pensylvanica (Michx.) R.T. Clausen Native SICAP

  Pennsylvania catchfly · Caryophyllaceae 1 county
• 
  Silene latifolia Poir. Introduced SILA21

  bladder campion · Caryophyllaceae 5 counties
• 
  Silene latifolia Poir. ssp. alba (Mill.) Greuter & Burdet Introduced SILAA3

  bladder campion · Caryophyllaceae 5 counties
• 
  Silene noctiflora L. Introduced SINO

  nightflowering silene · Caryophyllaceae 3 counties
• 
  Silene stellata (L.) W.T. Aiton Native SIST

  widowsfrill · Caryophyllaceae 1 county
• 
  Silene vulgaris (Moench) Garcke Introduced SIVU

  maidenstears · Caryophyllaceae 2 counties
• 
  Sinapis arvensis L. Introduced SIAR4

  charlock mustard · Brassicaceae 3 counties
• 
  Sinapis arvensis L. ssp. arvensis Introduced SIARA

  wild mustard · Brassicaceae 3 counties
• 
  Sisymbrium altissimum L. Introduced SIAL2

  tall tumblemustard · Brassicaceae 3 counties
• 
  Sisymbrium officinale (L.) Scop. Introduced SIOF

  hedgemustard · Brassicaceae 3 counties
• 
  Sisyrinchium angustifolium Mill. Native SIAN3

  narrowleaf blue-eyed grass · Iridaceae 3 counties
• 
  Sisyrinchium atlanticum E.P. Bicknell Native SIAT

  eastern blue-eyed grass · Iridaceae 5 counties
• 
  Sisyrinchium montanum Greene Native SIMO2

  strict blue-eyed grass · Iridaceae 3 counties
• 
  Sisyrinchium montanum Greene var. crebrum Fernald Native SIMOC

  strict blue-eyed grass · Iridaceae 3 counties
• 
  Sium suave Walter Native SISU2

  hemlock waterparsnip · Apiaceae 4 counties
• 
  Smilax glauca Walter Native SMGL

  cat greenbrier · Smilacaceae 5 counties
• 
  Smilax herbacea L. Native SMHE

  smooth carrionflower · Smilacaceae 4 counties
• 
  Smilax rotundifolia L. Native SMRO

  roundleaf greenbrier · Smilacaceae 5 counties
• 
  Solanum carolinense L. Native SOCA3

  Carolina horsenettle · Solanaceae 2 counties
• 
  Solanum carolinense L. var. carolinense Native SOCAC4

  Carolina horsenettle · Solanaceae 2 counties
• 
  Solanum dulcamara L. Introduced SODU

  climbing nightshade · Solanaceae 4 counties
• 
  Solanum lycopersicum L. Introduced SOLY2

  garden tomato · Solanaceae 1 county
• 
  Solanum lycopersicum L. var. lycopersicum Introduced SOLYL

  garden tomato · Solanaceae 1 county
• 
  Solanum rostratum Dunal Native SORO

  buffalobur nightshade · Solanaceae 1 county
• 
  Solanum tuberosum L. Introduced SOTU

  Irish potato · Solanaceae 1 county
• 
  Solidago arguta Aiton Native SOAR

  Atlantic goldenrod · Asteraceae 1 county
• 
  Solidago arguta Aiton var. arguta Native SOARA

  Atlantic goldenrod · Asteraceae 1 county
• 
  Solidago bicolor L. Native SOBI

  white goldenrod · Asteraceae 2 counties
• 
  Solidago caesia L. Native SOCA4

  wreath goldenrod · Asteraceae 2 counties
• 
  Solidago canadensis L. Native SOCA6

  Canada goldenrod · Asteraceae 5 counties
• 
  Solidago canadensis L. var. canadensis Native SOCAC3

  Canada goldenrod · Asteraceae 5 counties
• 
  Solidago flexicaulis L. Native SOFL2

  zigzag goldenrod · Asteraceae 1 county
• 
  Solidago gigantea Aiton Native SOGI

  giant goldenrod · Asteraceae 3 counties
• 
  Solidago juncea Aiton Native SOJU

  early goldenrod · Asteraceae 5 counties
• 
  Solidago latissimifolia Mill. Native SOLA4

  Elliott's goldenrod · Asteraceae 3 counties
• 
  Solidago nemoralis Aiton Native SONE

  gray goldenrod · Asteraceae 5 counties
• 
  Solidago nemoralis Aiton var. nemoralis Native SONEN

  gray goldenrod · Asteraceae 5 counties
• 
  Solidago odora Aiton Native SOOD

  anisescented goldenrod · Asteraceae 3 counties
• 
  Solidago odora Aiton var. odora Native SOODO

  anisescented goldenrod · Asteraceae 3 counties
• 
  Solidago puberula Nutt. Native SOPU

  downy goldenrod · Asteraceae 2 counties
• 
  Solidago puberula Nutt. var. puberula Native SOPUP2

  downy goldenrod · Asteraceae 2 counties
• 
  Solidago rugosa Mill. Native SORU2

  wrinkleleaf goldenrod · Asteraceae 5 counties
• 
  Solidago sempervirens L. Native SOSE

  seaside goldenrod · Asteraceae 5 counties
• 
  Solidago speciosa Nutt. Native SOSP2

  showy goldenrod · Asteraceae 2 counties
• 
  Solidago speciosa Nutt. var. speciosa Native SOSPS4

  showy goldenrod · Asteraceae 2 counties
• 
  Solidago uliginosa Nutt. Native SOUL

  bog goldenrod · Asteraceae 4 counties
• 
  Solidago ulmifolia Muhl. ex Willd. Native SOUL2

  elmleaf goldenrod · Asteraceae 1 county
• 
  Solidago ulmifolia Muhl. ex Willd. var. ulmifolia Native SOULU2

  elmleaf goldenrod · Asteraceae 1 county
• 
  Sonchus arvensis L. Introduced SOAR2

  field sowthistle · Asteraceae 2 counties
• 
  Sonchus arvensis L. ssp. arvensis Introduced SOARA2

  field sowthistle · Asteraceae 2 counties
• 
  Sonchus asper (L.) Hill Introduced SOAS

  spiny sowthistle · Asteraceae 2 counties
• 
  Sonchus oleraceus L. Introduced SOOL

  common sowthistle · Asteraceae 3 counties
• 
  Sorbus aucuparia L. Introduced SOAU

  European mountain ash · Rosaceae 2 counties
• 
  Sorghastrum nutans (L.) Nash Native SONU2

  Indiangrass · Poaceae 3 counties
• 
  Sorghum bicolor (L.) Moench Introduced SOBI2

  sorghum · Poaceae 2 counties
• 
  Sorghum bicolor (L.) Moench ssp. bicolor Introduced SOBIB

  grain sorghum · Poaceae 2 counties
• 
  Sparganium americanum Nutt. Native SPAM

  American bur-reed · Sparganiaceae 4 counties
• 
  Sparganium androcladum (Engelm.) Morong Native SPAN

  branched bur-reed · Sparganiaceae 2 counties
• 
  Sparganium eurycarpum Engelm. Native SPEU

  broadfruit bur-reed · Sparganiaceae 3 counties
• 
  Spartina alterniflora Loisel. Native SPAL

  smooth cordgrass · Poaceae 5 counties
• 
  Spartina cynosuroides (L.) Roth Native SPCY

  big cordgrass · Poaceae 1 county
• 
  Spartina patens (Aiton) Muhl. Native SPPA

  saltmeadow cordgrass · Poaceae 5 counties
• 
  Spartina pectinata Bosc ex Link Native SPPE

  prairie cordgrass · Poaceae 3 counties
• 
  Spergula arvensis L. Introduced SPAR

  corn spurry · Caryophyllaceae 3 counties
• 
  Spergularia canadensis (Pers.) G. Don Native SPCA3

  Canadian sandspurry · Caryophyllaceae 2 counties
• 
  Spergularia canadensis (Pers.) G. Don var. canadensis Native SPCAC

  Canadian sandspurry · Caryophyllaceae 2 counties
• 
  Spergularia rubra (L.) J. Presl & C. Presl Introduced SPRU

  red sandspurry · Caryophyllaceae 3 counties
• 
  Spergularia salina J. Presl & C. Presl Native SPSA5

  salt sandspurry · Caryophyllaceae 5 counties
• 
  Sphenopholis intermedia (Rydb.) Rydb. Native SPIN3

  slender wedgescale · Poaceae 1 county
• 
  Sphenopholis nitida (Biehler) Scribn. Native SPNI

  shiny wedgescale · Poaceae 2 counties
• 
  Sphenopholis obtusata (Michx.) Scribn. Native SPOB

  prairie wedgescale · Poaceae 1 county
• 
  Sphenopholis pensylvanica (L.) Hitchc. Native SPPE3

  swamp wedgescale · Poaceae 1 county
• 
  Spinacia oleracea L. Introduced SPOL

  spinach · Chenopodiaceae 1 county
• 
  Spiraea alba Du Roi Native SPAL2

  white meadowsweet · Rosaceae 5 counties
• 
  Spiraea alba Du Roi var. latifolia (Aiton) Dippel Native SPALL

  white meadowsweet · Rosaceae 5 counties
• 
  Spiraea japonica L. f. Introduced SPJA

  Japanese meadowsweet · Rosaceae 1 county
• 
  Spiraea japonica L. f. var. fortunei (Planch.) Rehder Introduced SPJAF

  fortune meadowsweet · Rosaceae 1 county
• 
  Spiraea tomentosa L. Native SPTO2

  steeplebush · Rosaceae 4 counties
• 
  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes lacera (Raf.) Raf. Native SPLA4

  northern slender lady's tresses · Orchidaceae 3 counties
• 
  Spiranthes lucida (H.H. Eaton) Ames Native SPLU2

  shining lady's tresses · Orchidaceae 1 county
• 
  Spiranthes tuberosa Raf. Native SPTU

  little lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes vernalis Engelm. & A. Gray Native SPVE

  spring lady's tresses · Orchidaceae 4 counties
• 
  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae 3 counties
• 
  Sporobolus compositus (Poir.) Merr. Native SPCO16

  composite dropseed · Poaceae 2 counties
• 
  Sporobolus compositus (Poir.) Merr. var. compositus Native SPCOC2

  composite dropseed · Poaceae 2 counties
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood Native SPVA

  poverty dropseed · Poaceae 2 counties
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood var. vaginiflorus Native SPVAV2

  poverty dropseed · Poaceae 2 counties
• 
  Stachys annua (L.) L. Introduced STAN

  annual hedgenettle · Lamiaceae 1 county
• 
  Stachys hyssopifolia Michx. Native STHY3

  hyssopleaf hedgenettle · Lamiaceae 2 counties
• 
  Stachys palustris L. Native STPA

  marsh hedgenettle · Lamiaceae 2 counties
• 
  Stachys tenuifolia Willd. Native STTE

  smooth hedgenettle · Lamiaceae 3 counties
• 
  Stellaria graminea L. Introduced STGR

  grass-like starwort · Caryophyllaceae 3 counties
• 
  Stellaria longifolia Muhl. ex Willd. Native STLO

  longleaf starwort · Caryophyllaceae 1 county
• 
  Stellaria longifolia Muhl. ex Willd. var. longifolia Native STLOL

  longleaf starwort · Caryophyllaceae 1 county
• 
  Stellaria media (L.) Vill. Introduced STME2

  common chickweed · Caryophyllaceae 3 counties
• 
  Stellaria media (L.) Vill. ssp. media Introduced STMEM

  common chickweed · Caryophyllaceae 3 counties
• 
  Streptopus lanceolatus (Aiton) Reveal Native STLA16

  twistedstalk · Liliaceae 1 county
• 
  Streptopus lanceolatus (Aiton) Reveal var. roseus (Michx.) Reveal Native STLAR

  twistedstalk · Liliaceae 1 county
• 
  Strophostyles helvola (L.) Elliott Native STHE9

  amberique-bean · Fabaceae 5 counties
• 
  Strophostyles umbellata (Muhl. ex Willd.) Britton Native STUM2

  pink fuzzybean · Fabaceae 1 county
• 
  Stuckenia pectinata (L.) Börner Native STPE15

  sago pondweed · Potamogetonaceae 2 counties
• 
  Suaeda linearis (Elliott) Moq. Native SULI

  annual seepweed · Chenopodiaceae 4 counties
• 
  Suaeda maritima (L.) Dumort. Both SUMA

  herbaceous seepweed · Chenopodiaceae 3 counties
• 
  Suaeda maritima (L.) Dumort. ssp. maritima Introduced SUMAM

  herbaceous seepweed · Chenopodiaceae 3 counties
• 
  Symphoricarpos albus (L.) S.F. Blake Native SYAL

  common snowberry · Caprifoliaceae 1 county
• 
  Symphoricarpos albus (L.) S.F. Blake var. laevigatus (Fernald) S.F. Blake Native SYALL

  common snowberry · Caprifoliaceae 1 county
• 
  Symphoricarpos orbiculatus Moench Native SYOR

  coralberry · Caprifoliaceae 1 county
• 
  Symphyotrichum concolor (L.) G.L. Nesom Native SYCO3

  eastern silver aster · Asteraceae 1 county
• 
  Symphyotrichum dumosum (L.) G.L. Nesom Native SYDU2

  rice button aster · Asteraceae 3 counties
• 
  Symphyotrichum dumosum (L.) G.L. Nesom var. dumosum Native SYDUD2

  rice button aster · Asteraceae 1 county
• 
  Symphyotrichum ericoides (L.) G.L. Nesom Native SYER

  white heath aster · Asteraceae 5 counties
• 
  Symphyotrichum laeve (L.) Á. Löve & D. Löve Native SYLA3

  smooth blue aster · Asteraceae 2 counties
• 
  Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve Native SYLAL3

  smooth blue aster · Asteraceae 2 counties
• 
  Symphyotrichum lanceolatum (Willd.) G.L. Nesom Native SYLA6

  white panicle aster · Asteraceae 2 counties
• 
  Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. lanceolatum Native SYLAL6

  white panicle aster · Asteraceae 2 counties
• 
  Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. lanceolatum var. lanceolatum Native SYLAL4

  white panicle aster · Asteraceae 2 counties
• 
  Symphyotrichum lateriflorum (L.) Á. Löve & D. Löve Native SYLA4

  calico aster · Asteraceae 4 counties
• 
  Symphyotrichum lateriflorum (L.) Á. Löve & D. Löve var. lateriflorum Native SYLAL7

  calico aster · Asteraceae 4 counties
• 
  Symphyotrichum novae-angliae (L.) G.L. Nesom Native SYNO2

  New England aster · Asteraceae 2 counties
• 
  Symphyotrichum novi-belgii (L.) G.L. Nesom Native SYNO3

  New York aster · Asteraceae 4 counties
• 
  Symphyotrichum patens (Aiton) G.L. Nesom Native SYPA11

  late purple aster · Asteraceae 4 counties
• 
  Symphyotrichum patens (Aiton) G.L. Nesom var. patens Native SYPAP2

  late purple aster · Asteraceae 4 counties
• 
  Symphyotrichum pilosum (Willd.) G.L. Nesom Native SYPI2

  hairy white oldfield aster · Asteraceae 3 counties
• 
  Symphyotrichum puniceum (L.) Á. Löve & D. Löve Native SYPU

  purplestem aster · Asteraceae 1 county
• 
  Symphyotrichum puniceum (L.) Á. Löve & D. Löve var. puniceum Native SYPUP

  purplestem aster · Asteraceae 1 county
• 
  Symphyotrichum subulatum (Michx.) G.L. Nesom Native SYSU5

  eastern annual saltmarsh aster · Asteraceae 4 counties
• 
  Symphyotrichum tenuifolium (L.) G.L. Nesom Native SYTE6

  perennial saltmarsh aster · Asteraceae 4 counties
• 
  Symphyotrichum undulatum (L.) G.L. Nesom Native SYUN

  wavyleaf aster · Asteraceae 4 counties
• 
  Symplocarpus foetidus (L.) Salisb. ex W.P.C. Barton Native SYFO

  skunk cabbage · Araceae 5 counties
• 
  Syringa vulgaris L. Introduced SYVU

  common lilac · Oleaceae 2 counties
• 
  Taenidia integerrima (L.) Drude Native TAIN

  yellow pimpernel · Apiaceae 1 county
• 
  Tanacetum balsamita L. Introduced TABA

  costmary · Asteraceae 2 counties
• 
  Tanacetum parthenium (L.) Sch. Bip. Introduced TAPA6

  feverfew · Asteraceae 1 county
• 
  Tanacetum vulgare L. Introduced TAVU

  common tansy · Asteraceae 2 counties
• 
  Taraxacum laevigatum (Willd.) DC. Introduced TALA2

  rock dandelion · Asteraceae 1 county
• 
  Taraxacum officinale F.H. Wigg. Both TAOF

  common dandelion · Asteraceae 3 counties
• 
  Taraxacum officinale F.H. Wigg. ssp. officinale Introduced TAOFO

  common dandelion · Asteraceae 3 counties
• 
  Taxus canadensis Marshall Native TACA7

  Canada yew · Taxaceae 1 county
• 
  Tephrosia virginiana (L.) Pers. Native TEVI

  Virginia tephrosia · Fabaceae 3 counties
• 
  Teucrium canadense L. Native TECA3

  Canada germander · Lamiaceae 4 counties
• 
  Teucrium canadense L. var. canadense Native TECAC

  Canada germander · Lamiaceae 4 counties
• 
  Thalictrum dioicum L. Native THDI

  early meadow-rue · Ranunculaceae 2 counties
• 
  Thalictrum pubescens Pursh Native THPU2

  king of the meadow · Ranunculaceae 5 counties
• 
  Thalictrum revolutum DC. Native THRE

  waxyleaf meadow-rue · Ranunculaceae 3 counties
• 
  Thalictrum thalictroides (L.) Eames & B. Boivin Native THTH2

  rue anemone · Ranunculaceae 2 counties
• 
  Thelypteris noveboracensis (L.) Nieuwl. Native THNO

  New York fern · Thelypteridaceae 5 counties
• 
  Thelypteris simulata (Davenport) Nieuwl. Native THSI2

  bog fern · Thelypteridaceae 5 counties
• 
  Thlaspi arvense L. Introduced THAR5

  field pennycress · Brassicaceae 4 counties
• 
  Thuja occidentalis L. Native THOC2

  arborvitae · Cupressaceae 1 county
• 
  Thymus praecox Opiz Introduced THPR

  mother of thyme · Lamiaceae 2 counties
• 
  Thymus praecox Opiz ssp. arcticus (Durand) Jalas Introduced THPRA

  creeping thyme · Lamiaceae 2 counties
• 
  Tilia americana L. Native TIAM

  American basswood · Tiliaceae 4 counties
• 
  Tilia americana L. var. americana Native TIAMA

  American basswood · Tiliaceae 4 counties
• 
  Torreyochloa pallida (Torr.) Church Native TOPA6

  pale false mannagrass · Poaceae 2 counties
• 
  Torreyochloa pallida (Torr.) Church var. pallida Native TOPAP

  pale false mannagrass · Poaceae 2 counties
• 
  Toxicodendron radicans (L.) Kuntze Native TORA2

  eastern poison ivy · Anacardiaceae 3 counties
• 
  Toxicodendron radicans (L.) Kuntze ssp. radicans Native TORAR

  eastern poison ivy · Anacardiaceae 3 counties
• 
  Toxicodendron rydbergii (Small ex Rydb.) Greene Native TORY

  western poison ivy · Anacardiaceae 1 county
• 
  Toxicodendron vernix (L.) Kuntze Native TOVE

  poison sumac · Anacardiaceae 4 counties
• 
  Tradescantia ohiensis Raf. Native TROH

  bluejacket · Commelinaceae 1 county
• 
  Tragopogon dubius Scop. Introduced TRDU

  yellow salsify · Asteraceae 2 counties
• 
  Tragopogon pratensis L. Introduced TRPR

  Jack-go-to-bed-at-noon · Asteraceae 3 counties
• 
  Triadenum virginicum (L.) Raf. Native TRVI2

  Virginia marsh St. Johnswort · Clusiaceae 3 counties
• 
  Trichophorum alpinum (L.) Pers. Native TRAL7

  alpine bulrush · Cyperaceae 1 county
• 
  Trichophorum planifolium (Spreng.) Palla Native TRPL6

  bashful bulrush · Cyperaceae 2 counties
• 
  Trichostema dichotomum L. Native TRDI2

  forked bluecurls · Lamiaceae 5 counties
• 
  Tridens flavus (L.) Hitchc. Native TRFL2

  purpletop tridens · Poaceae 2 counties
• 
  Tridens flavus (L.) Hitchc. var. flavus Native TRFLF

  purpletop tridens · Poaceae 2 counties
• 
  Trientalis borealis Raf. Native TRBO2

  starflower · Primulaceae 4 counties
• 
  Trientalis borealis Raf. ssp. borealis Native TRBOB

  starflower · Primulaceae 4 counties
• 
  Trifolium arvense L. Introduced TRAR4

  rabbitfoot clover · Fabaceae 5 counties
• 
  Trifolium aureum Pollich Introduced TRAU2

  golden clover · Fabaceae 5 counties
• 
  Trifolium campestre Schreb. Introduced TRCA5

  field clover · Fabaceae 2 counties
• 
  Trifolium dubium Sibth. Introduced TRDU2

  suckling clover · Fabaceae 1 county
• 
  Trifolium hybridum L. Introduced TRHY

  alsike clover · Fabaceae 5 counties
• 
  Trifolium incarnatum L. Introduced TRIN3

  crimson clover · Fabaceae 2 counties
• 
  Trifolium pratense L. Introduced TRPR2

  red clover · Fabaceae 4 counties
• 
  Trifolium repens L. Introduced TRRE3

  white clover · Fabaceae 4 counties
• 
  Triglochin maritima L. Native TRMA20

  seaside arrowgrass · Juncaginaceae 4 counties
• 
  Trillium cernuum L. Native TRCE

  whip-poor-will flower · Liliaceae 3 counties
• 
  Trillium erectum L. Native TRER3

  red trillium · Liliaceae 3 counties
• 
  Trillium undulatum Willd. Native TRUN

  painted trillium · Liliaceae 1 county
• 
  Triosteum perfoliatum L. Native TRPE5

  feverwort · Caprifoliaceae 2 counties
• 
  Triplasis purpurea (Walter) Chapm. Native TRPU4

  purple sandgrass · Poaceae 2 counties
• 
  Tripsacum dactyloides (L.) L. Native TRDA3

  eastern gamagrass · Poaceae 1 county
• 
  Triticum aestivum L. Introduced TRAE

  common wheat · Poaceae 1 county
• 
  Tsuga canadensis (L.) Carrière Native TSCA

  eastern hemlock · Pinaceae 1 county
• 
  Tussilago farfara L. Introduced TUFA

  coltsfoot · Asteraceae 4 counties
• 
  Typha angustifolia L. Both TYAN

  narrowleaf cattail · Typhaceae 4 counties
• 
  Typha latifolia L. Native TYLA

  broadleaf cattail · Typhaceae 3 counties
• ⚘
  Typha ×glauca Godr. (pro sp.) [angustifolia or domingensis × latifolia] Native TYGL

  hybrid cattail · Typhaceae 2 counties
• 
  Ulmus americana L. Native ULAM

  American elm · Ulmaceae 5 counties
• 
  Ulmus pumila L. Introduced ULPU

  Siberian elm · Ulmaceae 1 county
• 
  Ulmus rubra Muhl. Native ULRU

  slippery elm · Ulmaceae 1 county
• 
  Urtica dioica L. Both URDI

  stinging nettle · Urticaceae 2 counties
• 
  Utricularia cornuta Michx. Native UTCO

  horned bladderwort · Lentibulariaceae 2 counties
• 
  Utricularia geminiscapa Benj. Native UTGE

  hiddenfruit bladderwort · Lentibulariaceae 3 counties
• 
  Utricularia gibba L. Native UTGI

  humped bladderwort · Lentibulariaceae 1 county
• 
  Utricularia intermedia Hayne Native UTIN2

  flatleaf bladderwort · Lentibulariaceae 2 counties
• 
  Utricularia macrorhiza Leconte Native UTMA

  common bladderwort · Lentibulariaceae 4 counties
• 
  Utricularia purpurea Walter Native UTPU

  eastern purple bladderwort · Lentibulariaceae 2 counties
• 
  Utricularia radiata Small Native UTRA

  little floating bladderwort · Lentibulariaceae 2 counties
• 
  Utricularia resupinata B.D. Greene ex Bigelow Native UTRE

  lavender bladderwort · Lentibulariaceae 2 counties
• 
  Utricularia subulata L. Native UTSU

  zigzag bladderwort · Lentibulariaceae 1 county
• 
  Uvularia perfoliata L. Native UVPE

  perfoliate bellwort · Liliaceae 2 counties
• 
  Uvularia sessilifolia L. Native UVSE

  sessileleaf bellwort · Liliaceae 5 counties
• 
  Vaccaria hispanica (Mill.) Rauschert Introduced VAHI2

  cow soapwort · Caryophyllaceae 1 county
• 
  Vaccinium angustifolium Aiton Native VAAN

  lowbush blueberry · Ericaceae 4 counties
• 
  Vaccinium corymbosum L. Native VACO

  highbush blueberry · Ericaceae 5 counties
• 
  Vaccinium macrocarpon Aiton Native VAMA

  cranberry · Ericaceae 5 counties
• 
  Vaccinium oxycoccos L. Native VAOX

  small cranberry · Ericaceae 3 counties
• 
  Vaccinium pallidum Aiton Native VAPA4

  Blue Ridge blueberry · Ericaceae 4 counties
• 
  Vaccinium stamineum L. Native VAST

  deerberry · Ericaceae 1 county
• 
  Vallisneria americana Michx. Native VAAM3

  American eelgrass · Hydrocharitaceae 2 counties
• 
  Veratrum viride Aiton Native VEVI

  green false hellebore · Liliaceae 3 counties
• 
  Verbascum blattaria L. Introduced VEBL

  moth mullein · Scrophulariaceae 2 counties
• 
  Verbascum phlomoides L. Introduced VEPH

  orange mullein · Scrophulariaceae 2 counties
• 
  Verbascum thapsus L. Introduced VETH

  common mullein · Scrophulariaceae 3 counties
• 
  Verbena hastata L. Native VEHA2

  swamp verbena · Verbenaceae 3 counties
• 
  Verbena hastata L. var. hastata Native VEHAH

  swamp verbena · Verbenaceae 3 counties
• 
  Verbena urticifolia L. Native VEUR

  white vervain · Verbenaceae 4 counties
• 
  Verbena urticifolia L. var. urticifolia Native VEURU

  white vervain · Verbenaceae 4 counties
• 
  Vernonia noveboracensis (L.) Michx. Native VENO

  New York ironweed · Asteraceae 2 counties
• 
  Veronica anagallis-aquatica L. Native VEAN2

  water speedwell · Scrophulariaceae 1 county
• 
  Veronica arvensis L. Introduced VEAR

  corn speedwell · Scrophulariaceae 2 counties
• 
  Veronica chamaedrys L. Introduced VECH

  germander speedwell · Scrophulariaceae 1 county
• 
  Veronica officinalis L. Introduced VEOF2

  common gypsyweed · Scrophulariaceae 3 counties
• 
  Veronica officinalis L. var. officinalis Introduced VEOFO

  common gypsyweed · Scrophulariaceae 3 counties
• 
  Veronica peregrina L. Native VEPE2

  neckweed · Scrophulariaceae 3 counties
• 
  Veronica persica Poir. Introduced VEPE3

  birdeye speedwell · Scrophulariaceae 1 county
• 
  Veronica scutellata L. Native VESC2

  skullcap speedwell · Scrophulariaceae 3 counties
• 
  Veronica serpyllifolia L. Both VESE

  thymeleaf speedwell · Scrophulariaceae 4 counties
• 
  Veronica serpyllifolia L. ssp. serpyllifolia Introduced VESES

  thymeleaf speedwell · Scrophulariaceae 4 counties
• 
  Viburnum acerifolium L. Native VIAC

  mapleleaf viburnum · Caprifoliaceae 3 counties
• 
  Viburnum dentatum L. Native VIDE

  southern arrowwood · Caprifoliaceae 5 counties
• 
  Viburnum dentatum L. var. venosum (Britton) Gleason Native VIDEV

  southern arrowwood · Caprifoliaceae 5 counties
• 
  Viburnum lantanoides Michx. Native VILA11

  hobblebush · Caprifoliaceae 1 county
• 
  Viburnum lentago L. Native VILE

  nannyberry · Caprifoliaceae 4 counties
• 
  Viburnum nudum L. Native VINU

  possumhaw · Caprifoliaceae 4 counties
• 
  Viburnum nudum L. var. cassinoides (L.) Torr. & A. Gray Native VINUC

  withe-rod · Caprifoliaceae 4 counties
• 
  Viburnum opulus L. Both VIOP

  European cranberrybush · Caprifoliaceae 1 county
• 
  Vicia cracca L. Introduced VICR

  bird vetch · Fabaceae 3 counties
• 
  Vicia cracca L. ssp. cracca Introduced VICRC

  bird vetch · Fabaceae 3 counties
• 
  Vicia hirsuta (L.) Gray Introduced VIHI

  tiny vetch · Fabaceae 1 county
• 
  Vicia sativa L. Introduced VISA

  garden vetch · Fabaceae 4 counties
• 
  Vicia tetrasperma (L.) Schreb. Introduced VITE

  lentil vetch · Fabaceae 2 counties
• 
  Vicia villosa Roth Introduced VIVI

  winter vetch · Fabaceae 2 counties
• 
  Vicia villosa Roth ssp. villosa Introduced VIVIV

  winter vetch · Fabaceae 2 counties
• 
  Vinca minor L. Introduced VIMI2

  common periwinkle · Apocynaceae 4 counties
• 
  Viola blanda Willd. Native VIBL

  sweet white violet · Violaceae 3 counties
• 
  Viola blanda Willd. var. palustriformis A. Gray Native VIBLP

  sweet white violet · Violaceae 3 counties
• 
  Viola cucullata Aiton Native VICU

  marsh blue violet · Violaceae 4 counties
• 
  Viola labradorica Schrank Native VILA10

  alpine violet · Violaceae 3 counties
• 
  Viola lanceolata L. Native VILA4

  bog white violet · Violaceae 5 counties
• 
  Viola lanceolata L. ssp. lanceolata Native VILAL

  bog white violet · Violaceae 5 counties
• 
  Viola macloskeyi Lloyd Native VIMA2

  small white violet · Violaceae 2 counties
• 
  Viola macloskeyi Lloyd ssp. pallens (Banks ex Ging) M.S. Baker Native VIMAP3

  smooth white violet · Violaceae 2 counties
• 
  Viola odorata L. Introduced VIOD

  sweet violet · Violaceae 1 county
• 
  Viola pedata L. Native VIPE

  birdfoot violet · Violaceae 3 counties
• 
  Viola pubescens Aiton Native VIPU3

  downy yellow violet · Violaceae 4 counties
• 
  Viola pubescens Aiton var. pubescens Native VIPUP2

  downy yellow violet · Violaceae 2 counties
• 
  Viola rotundifolia Michx. Native VIRO2

  roundleaf yellow violet · Violaceae 2 counties
• 
  Viola sagittata Aiton Native VISA2

  arrowleaf violet · Violaceae 5 counties
• 
  Viola sororia Willd. Native VISO

  common blue violet · Violaceae 4 counties
• 
  Viola tricolor L. Introduced VITR

  johnny jumpup · Violaceae 1 county
• 
  Viola ×palmata L. (pro sp.) [brittoniana or pedatifida × affinis or sororia] Native VIPA18

  early blue violet · Violaceae 1 county
• 
  Viola ×primulifolia L. (pro sp.) [lanceolata × macloskeyi] Native VIPR4

  Violaceae 3 counties
• 
  Vitis aestivalis Michx. Native VIAE

  summer grape · Vitaceae 3 counties
• 
  Vitis labrusca L. Native VILA8

  fox grape · Vitaceae 5 counties
• ⚘
  Vitis ×novae-angliae Fernald (pro sp.) [labrusca × riparia] Native VINO2

  pilgrim grape · Vitaceae 1 county
• 
  Vulpia myuros (L.) C.C. Gmel. Introduced VUMY

  Poaceae 1 county
• 
  Vulpia octoflora (Walter) Rydb. Native VUOC

  sixweeks fescue · Poaceae 3 counties
• 
  Vulpia octoflora (Walter) Rydb. var. glauca (Nutt.) Fernald Native VUOCG

  sixweeks fescue · Poaceae 3 counties
• 
  Woodsia ilvensis (L.) R. Br. Native WOIL

  rusty woodsia · Dryopteridaceae 1 county
• 
  Woodsia obtusa (Spreng.) Torr. Native WOOB2

  bluntlobe cliff fern · Dryopteridaceae 2 counties
• 
  Woodsia obtusa (Spreng.) Torr. ssp. obtusa Native WOOBO

  bluntlobe cliff fern · Dryopteridaceae 2 counties
• 
  Woodwardia areolata (L.) T. Moore Native WOAR

  netted chainfern · Blechnaceae 5 counties
• 
  Woodwardia virginica (L.) Sm. Native WOVI

  Virginia chainfern · Blechnaceae 4 counties
• 
  Xanthium spinosum L. Introduced XASP2

  spiny cocklebur · Asteraceae 1 county
• 
  Xanthium strumarium L. Native XAST

  rough cocklebur · Asteraceae 4 counties
• 
  Xyris difformis Chapm. Native XYDI

  bog yelloweyed grass · Xyridaceae 4 counties
• 
  Xyris difformis Chapm. var. difformis Native XYDID

  bog yelloweyed grass · Xyridaceae 4 counties
• 
  Xyris montana Ries Native XYMO

  northern yelloweyed grass · Xyridaceae 1 county
• 
  Xyris smalliana Nash Native XYSM

  Small's yelloweyed grass · Xyridaceae 1 county
• 
  Xyris torta Sm. Native XYTO

  slender yelloweyed grass · Xyridaceae 4 counties
• 
  Yucca filamentosa L. Native YUFI

  Adam's needle · Agavaceae 1 county
• 
  Zannichellia palustris L. Native ZAPA

  horned pondweed · Zannichelliaceae 3 counties
• 
  Zanthoxylum americanum Mill. Native ZAAM

  common pricklyash · Rutaceae 1 county
• 
  Zizania aquatica L. Native ZIAQ

  annual wildrice · Poaceae 2 counties
• 
  Zizania aquatica L. var. aquatica Native ZIAQA2

  annual wildrice · Poaceae 2 counties
• 
  Zizia aurea (L.) W.D.J. Koch Native ZIAU

  golden zizia · Apiaceae 2 counties
• 
  Zostera marina L. Native ZOMA

  seawrack · Zosteraceae 2 counties