Park County

Montana

FIPS: 30067
Taxa recorded: 1,988
Of which native: 1,743
Introduced: 220

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Showing 1988 of 1,988.

Abies lasiocarpa (Hook.) Nutt. Native ABLA

subalpine fir · Pinaceae
Abies lasiocarpa (Hook.) Nutt. var. lasiocarpa Native ABLAL

subalpine fir · Pinaceae
Abronia fragrans Nutt. ex Hook. Native ABFR2

snowball sand verbena · Nyctaginaceae
Acer glabrum Torr. Native ACGL

Rocky Mountain maple · Aceraceae
Acer glabrum Torr. var. glabrum Native ACGLG2

Rocky Mountain maple · Aceraceae
Acer negundo L. Native ACNE2

boxelder · Aceraceae
Acer negundo L. var. interius (Britton) Sarg. Native ACNEI2

boxelder · Aceraceae
Achillea millefolium L. Both ACMI2

common yarrow · Asteraceae
Achillea millefolium L. var. alpicola (Rydb.) Garrett Native ACMIA

common yarrow · Asteraceae
Achillea millefolium L. var. occidentalis DC. Native ACMIO

western yarrow · Asteraceae
Achnatherum hymenoides (Roem. & Schult.) Barkworth Native ACHY

Indian ricegrass · Poaceae
Achnatherum lettermanii (Vasey) Barkworth Native ACLE9

Letterman's needlegrass · Poaceae
Achnatherum nelsonii (Scribn.) Barkworth Native ACNE9

Columbia needlegrass · Poaceae
Achnatherum nelsonii (Scribn.) Barkworth ssp. dorei (Barkworth & Maze) Barkworth Native ACNED

Dore's needlegrass · Poaceae
Achnatherum nelsonii (Scribn.) Barkworth ssp. nelsonii Native ACNEN2

Columbia needlegrass · Poaceae
Achnatherum occidentale (Thurb.) Barkworth Native ACOC3

western needlegrass · Poaceae
Achnatherum occidentale (Thurb.) Barkworth ssp. pubescens (Vasey) Barkworth Native ACOCP

pubescent western needlegrass · Poaceae
Achnatherum pinetorum (M.E. Jones) Barkworth Native ACPI2

pine needlegrass · Poaceae
Achnatherum richardsonii (Link) Barkworth Native ACRI8

Richardson's needlegrass · Poaceae
Aconitum columbianum Nutt. Native ACCO4

Columbian monkshood · Ranunculaceae
Aconitum columbianum Nutt. ssp. columbianum Native ACCOC3

Columbian monkshood · Ranunculaceae
Acroptilon repens (L.) DC. Introduced ACRE3

hardheads · Asteraceae
Actaea rubra (Aiton) Willd. Native ACRU2

red baneberry · Ranunculaceae
Actaea rubra (Aiton) Willd. ssp. arguta (Nutt.) Hultén Native ACRUA8

red baneberry · Ranunculaceae
Adoxa moschatellina L. Native ADMO

muskroot · Adoxaceae
Aegilops cylindrica Host Introduced AECY

jointed goatgrass · Poaceae
Agoseris aurantiaca (Hook.) Greene Native AGAU2

orange agoseris · Asteraceae
Agoseris aurantiaca (Hook.) Greene var. aurantiaca Native AGAUA

orange agoseris · Asteraceae
Agoseris aurantiaca (Hook.) Greene var. purpurea (A. Gray) Cronquist Native AGAUP

orange agoseris · Asteraceae
Agoseris glauca (Pursh) Raf. Native AGGL

pale agoseris · Asteraceae
Agoseris glauca (Pursh) Raf. var. dasycephala (Torr. & A. Gray) Jeps. Native AGGLD

pale agoseris · Asteraceae
Agoseris glauca (Pursh) Raf. var. glauca Native AGGLG

pale agoseris · Asteraceae
Agoseris glauca (Pursh) Raf. var. laciniata (D.C. Eaton) Smiley Native AGGLL

false agoseris · Asteraceae
Agoseris lackschewitzii Douglass M. Hend. & R. Moseley Native AGLA9

Mill Creek agoseris · Asteraceae
Agropyron cristatum (L.) Gaertn. Introduced AGCR

crested wheatgrass · Poaceae
Agropyron cristatum (L.) Gaertn. ssp. pectinatum (M. Bieb.) Tzvelev Introduced AGCRP8

crested wheatgrass · Poaceae
Agropyron desertorum (Fisch. ex Link) Schult. Introduced AGDE2

desert wheatgrass · Poaceae
Agrostemma githago L. Introduced AGGI

common corncockle · Caryophyllaceae
Agrostis exarata Trin. Native AGEX

spike bentgrass · Poaceae
Agrostis humilis Vasey Native AGHU

alpine bentgrass · Poaceae
Agrostis idahoensis Nash Native AGID

Idaho bentgrass · Poaceae
Agrostis mertensii Trin. Native AGME3

northern bentgrass · Poaceae
Agrostis pauzhetica Prob. Native AGPA9

Thermal Bent · Poaceae
Agrostis scabra Willd. Native AGSC5

rough bentgrass · Poaceae
Agrostis stolonifera L. Introduced AGST2

creeping bentgrass · Poaceae
Agrostis variabilis Rydb. Native AGVA

mountain bentgrass · Poaceae
Alcea rosea L. Introduced ALRO3

hollyhock · Malvaceae
Alisma gramineum Lej. Native ALGR

narrowleaf water plantain · Alismataceae
Allium brandegeei S. Watson Native ALBR

Brandegee's onion · Liliaceae
Allium brevistylum S. Watson Native ALBR2

shortstyle onion · Liliaceae
Allium cernuum Roth Native ALCE2

nodding onion · Liliaceae
Allium schoenoprasum L. Both ALSC

wild chives · Liliaceae
Allium schoenoprasum L. var. schoenoprasum Introduced ALSCS2

wild chives · Liliaceae
Allium schoenoprasum L. var. sibiricum (L.) Hartm. Native ALSCS

wild chives · Liliaceae
Allium textile A. Nelson & J.F. Macbr. Native ALTE

textile onion · Liliaceae
Alnus incana (L.) Moench Native ALIN2

gray alder · Betulaceae
Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Breitung Native ALINT

thinleaf alder · Betulaceae
Alnus viridis (Chaix) DC. Native ALVI5

green alder · Betulaceae
Alnus viridis (Chaix) DC. ssp. sinuata (Regel) Á. Löve & D. Löve Native ALVIS

Sitka alder · Betulaceae
Alopecurus aequalis Sobol. Native ALAE

shortawn foxtail · Poaceae
Alopecurus aequalis Sobol. var. aequalis Native ALAEA

shortawn foxtail · Poaceae
Alopecurus arundinaceus Poir. Introduced ALAR

creeping meadow foxtail · Poaceae
Alopecurus magellanicus Lam. Native ALMA8

Alpine Meadow-Foxtail · Poaceae
Alopecurus pratensis L. Introduced ALPR3

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

pale madwort · Brassicaceae
Alyssum desertorum Stapf Introduced ALDE

desert madwort · Brassicaceae
Alyssum desertorum Stapf var. desertorum Introduced ALDED

desert madwort · Brassicaceae
Amaranthus albus L. Introduced AMAL

prostrate pigweed · Amaranthaceae
Amaranthus blitoides S. Watson Introduced AMBL

mat amaranth · Amaranthaceae
Amaranthus powellii S. Watson Native AMPO2

Powell's amaranth · Amaranthaceae
Amaranthus powellii S. Watson ssp. powellii Native AMPOP

Powell's amaranth · Amaranthaceae
Amaranthus retroflexus L. Native AMRE

redroot amaranth · Amaranthaceae
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. Native AMAL2

Saskatoon serviceberry · Rosaceae
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. var. alnifolia Native AMALA

Saskatoon serviceberry · Rosaceae
Amelanchier pumila (Torr. & A. Gray) Nutt. ex M. Roem. Native AMPU5

dwarf serviceberry · Rosaceae
Amelanchier utahensis Koehne Native AMUT

Utah serviceberry · Rosaceae
Amelanchier utahensis Koehne var. utahensis Native AMUTU

Utah serviceberry · Rosaceae
Amerorchis rotundifolia (Banks ex Pursh) Hultén Native AMRO

roundleaf orchid · Orchidaceae
Anaphalis margaritacea (L.) Benth. Native ANMA

western pearly everlasting · Asteraceae
Androsace chamaejasme Wulfen Native ANCH

sweetflower rockjasmine · Primulaceae
Androsace chamaejasme Wulfen ssp. carinata (Torr.) Hultén Native ANCHC

sweetflower rockjasmine · Primulaceae
Androsace filiformis Retz. Native ANFI

filiform rockjasmine · Primulaceae
Androsace occidentalis Pursh Native ANOC2

western rockjasmine · Primulaceae
Androsace septentrionalis L. Native ANSE4

pygmyflower rockjasmine · Primulaceae
Androsace septentrionalis L. ssp. subulifera (A. Gray) G.T. Robbins Native ANSES4

pygmyflower rockjasmine · Primulaceae
Anemone lithophila Rydb. Native ANLI4

Little Belt Mountain thimbleweed · Ranunculaceae
Anemone multifida Poir. Native ANMU

Pacific anemone · Ranunculaceae
Anemone multifida Poir. var. tetonensis (Porter ex Britton) C.L. Hitchc. Native ANMUT

Pacific anemone · Ranunculaceae
Anemone parviflora Michx. Native ANPA

smallflowered anemone · Ranunculaceae
Anemone parviflora Michx. var. parviflora Native ANPAP2

smallflowered anemone · Ranunculaceae
Angelica arguta Nutt. Native ANAR3

Lyall's angelica · Apiaceae
Angelica pinnata S. Watson Native ANPI2

small-leaf angelica · Apiaceae
Angelica roseana L.F. Hend. Native ANRO

rose angelica · Apiaceae
Antennaria alpina (L.) Gaertn. Native ANAL4

alpine pussytoes · Asteraceae
Antennaria anaphaloides Rydb. Native ANAN2

pearly pussytoes · Asteraceae
Antennaria aromatica Evert Native ANAR10

scented pussytoes · Asteraceae
Antennaria corymbosa E.E. Nelson Native ANCO

flat-top pussytoes · Asteraceae
Antennaria dimorpha (Nutt.) Torr. & A. Gray Native ANDI2

low pussytoes · Asteraceae
Antennaria flagellaris (A. Gray) A. Gray Native ANFL2

whip pussytoes · Asteraceae
Antennaria lanata (Hook.) Greene Native ANLA3

woolly pussytoes · Asteraceae
Antennaria luzuloides Torr. & A. Gray Native ANLU2

rush pussytoes · Asteraceae
Antennaria luzuloides Torr. & A. Gray ssp. luzuloides Native ANLUL

rush pussytoes · Asteraceae
Antennaria media Greene Native ANME2

Rocky Mountain pussytoes · Asteraceae
Antennaria microphylla Rydb. Native ANMI3

littleleaf pussytoes · Asteraceae
Antennaria monocephala DC. Native ANMO9

pygmy pussytoes · Asteraceae
Antennaria monocephala DC. ssp. angustata (Greene) Hultén Native ANMOA

pygmy pussytoes · Asteraceae
Antennaria parvifolia Nutt. Native ANPA4

small-leaf pussytoes · Asteraceae
Antennaria pulcherrima (Hook.) Greene Native ANPU

showy pussytoes · Asteraceae
Antennaria pulcherrima (Hook.) Greene ssp. pulcherrima Native ANPUP

handsome pussy-toes · Asteraceae
Antennaria racemosa Hook. Native ANRA

raceme pussytoes · Asteraceae
Antennaria rosea Greene Native ANRO2

rosy pussytoes · Asteraceae
Antennaria umbrinella Rydb. Native ANUM

umber pussytoes · Asteraceae
Anthemis arvensis L. Introduced ANAR6

corn chamomile · Asteraceae
Anthemis cotula L. Introduced ANCO2

stinking chamomile · Asteraceae
Apocynum androsaemifolium L. Native APAN2

spreading dogbane · Apocynaceae
Apocynum cannabinum L. Native APCA

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

Apocynaceae
Aquilegia brevistyla Hook. Native AQBR

smallflower columbine · Ranunculaceae
Aquilegia coerulea James Native AQCO

Colorado blue columbine · Ranunculaceae
Aquilegia coerulea James var. coerulea Native AQCOC

Colorado blue columbine · Ranunculaceae
Aquilegia coerulea James var. ochroleuca Hook. Native AQCOO

white Colorado columbine · Ranunculaceae
Aquilegia flavescens S. Watson Native AQFL

yellow columbine · Ranunculaceae
Aquilegia flavescens S. Watson var. flavescens Native AQFLF

yellow columbine · Ranunculaceae
Aquilegia flavescens S. Watson var. miniata A. Nelson & J.F. Macbr. Native AQFLM

yellow columbine · Ranunculaceae
Aquilegia formosa Fisch. ex DC. Native AQFO

western columbine · Ranunculaceae
Aquilegia jonesii Parry Native AQJO

Jones' columbine · Ranunculaceae
Aquilegia jonesii Parry var. jonesii Native AQJOJ

Jones' columbine · Ranunculaceae
Arabidopsis thaliana (L.) Heynh. Introduced ARTH

mouseear cress · Brassicaceae
Arabis drummondii A. Gray Native ARDR

Drummond's rockcress · Brassicaceae
Arabis fructicosa A. Nelson Native ARFR5

fruit rockcress · Brassicaceae
Arabis glabra (L.) Bernh. Native ARGL

tower rockcress · Brassicaceae
Arabis hirsuta (L.) Scop. Native ARHI

hairy rockcress · Brassicaceae
Arabis hirsuta (L.) Scop. var. pycnocarpa (M. Hopkins) Rollins Native ARHIP

creamflower rockcress · Brassicaceae
Arabis holboellii Hornem. Native ARHO2

Holboell's rockcress · Brassicaceae
Arabis holboellii Hornem. var. collinsii (Fernald) Rollins Native ARHOC

Collins' rockcress · Brassicaceae
Arabis holboellii Hornem. var. pendulocarpa (A. Nelson) Rollins Native ARHOP2

dropseed rockcress · Brassicaceae
Arabis holboellii Hornem. var. pinetorum (Tidestr.) Rollins Native ARHOP3

Holboell's rockcress · Brassicaceae
Arabis holboellii Hornem. var. retrofracta (Graham) Rydb. Native ARHOR

second rockcress · Brassicaceae
Arabis lemmonii S. Watson Native ARLE

Lemmon's rockcress · Brassicaceae
Arabis lemmonii S. Watson var. lemmonii Native ARLEL

Lemmon's rockcress · Brassicaceae
Arabis lyallii S. Watson Native ARLY

Lyall's rockcress · Brassicaceae
Arabis microphylla Nutt. Native ARMI

littleleaf rockcress · Brassicaceae
Arabis microphylla Nutt. var. macounii (S. Watson) Rollins Native ARMIM

Macoun's rockcress · Brassicaceae
Arabis microphylla Nutt. var. microphylla Native ARMIM2

littleleaf rockcress · Brassicaceae
Arabis nuttallii B.L. Rob. Native ARNU

Nuttall's rockcress · Brassicaceae
Arabis sparsiflora Nutt. Native ARSP

sicklepod rockcress · Brassicaceae
Arabis sparsiflora Nutt. var. subvillosa (S. Watson) Rollins Native ARSPS

hairystem rockcress · Brassicaceae
Arabis williamsii Rollins Native ARWI

Wind River rockcress · Brassicaceae
Arabis williamsii Rollins var. saximontana (Rollins) Rollins Native ARWIS

Cross Mountain rockcress · Brassicaceae
Arceuthobium americanum Nutt. ex Engelm. Native ARAM

American dwarf mistletoe · Viscaceae
Arceuthobium cyanocarpum (A. Nelson ex Rydb.) A. Nelson Native ARCY2

limber pine dwarf mistletoe · Viscaceae
Arctium lappa L. Introduced ARLA3

greater burdock · Asteraceae
Arctium minus Bernh. Introduced ARMI2

lesser burdock · Asteraceae
Arctostaphylos rubra (Rehder & Wilson) Fernald Native ARRU

red fruit bearberry · Ericaceae
Arctostaphylos uva-ursi (L.) Spreng. Native ARUV

kinnikinnick · Ericaceae
Arenaria congesta Nutt. Native ARCO5

ballhead sandwort · Caryophyllaceae
Arenaria congesta Nutt. var. congesta Native ARCOC4

ballhead sandwort · Caryophyllaceae
Arenaria congesta Nutt. var. lithophila (Rydb.) Maguire Native ARCOL

rock-loving sandwort · Caryophyllaceae
Arenaria hookeri Nutt. Native ARHO4

Hooker's sandwort · Caryophyllaceae
Arenaria hookeri Nutt. ssp. hookeri Native ARHOH3

Hooker's sandwort · Caryophyllaceae
Arenaria serpyllifolia L. Introduced ARSE2

thymeleaf sandwort · Caryophyllaceae
Argentina anserina (L.) Rydb. Native ARAN7

silverweed cinquefoil · Rosaceae
Arnica chamissonis Less. Native ARCH3

Chamisso arnica · Asteraceae
Arnica chamissonis Less. ssp. foliosa (Nutt.) Maguire Native ARCHF

Chamisso arnica · Asteraceae
Arnica chamissonis Less. ssp. foliosa (Nutt.) Maguire var. andina (Nutt.) Ediger & T.M. Barkley Native ARCHA2

Chamisso arnica · Asteraceae
Arnica cordifolia Hook. Native ARCO9

heartleaf arnica · Asteraceae
Arnica fulgens Pursh Native ARFU3

foothill arnica · Asteraceae
Arnica gracilis Rydb. Native ARGR14

smallhead arnica · Asteraceae
Arnica latifolia Bong. Native ARLA8

broadleaf arnica · Asteraceae
Arnica longifolia D.C. Eaton Native ARLO6

spearleaf arnica · Asteraceae
Arnica mollis Hook. Native ARMO4

hairy arnica · Asteraceae
Arnica parryi A. Gray Native ARPA13

Parry's arnica · Asteraceae
Arnica parryi A. Gray ssp. parryi Native ARPAP3

Parry's arnica · Asteraceae
Arnica rydbergii Greene Native ARRY

Rydberg's arnica · Asteraceae
Arnica sororia Greene Native ARSO2

twin arnica · Asteraceae
Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

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

tall oatgrass · Poaceae
Artemisia arbuscula Nutt. Native ARAR8

little sagebrush · Asteraceae
Artemisia arctica Less. Native ARAR9

boreal sagebrush · Asteraceae
Artemisia arctica Less. ssp. arctica Native ARARA2

boreal sagebrush · Asteraceae
Artemisia biennis Willd. Both ARBI2

biennial wormwood · Asteraceae
Artemisia biennis Willd. var. biennis Introduced ARBIB

biennial wormwood · Asteraceae
Artemisia campestris L. Native ARCA12

field sagewort · Asteraceae
Artemisia campestris L. ssp. borealis (Pall.) H.M. Hall & Clem. Native ARCAB2

field sagewort · Asteraceae
Artemisia campestris L. ssp. borealis (Pall.) H.M. Hall & Clem. var. borealis (Pall.) M. Peck Native ARCAB4

field sagewort · Asteraceae
Artemisia campestris L. ssp. borealis (Pall.) H.M. Hall & Clem. var. scouleriana (Hook.) Cronquist Native ARCAS5

field sagewort · Asteraceae
Artemisia cana Pursh Native ARCA13

silver sagebrush · Asteraceae
Artemisia cana Pursh ssp. cana Native ARCAC5

silver sagebrush · Asteraceae
Artemisia cana Pursh ssp. viscidula (Osterh.) Beetle Native ARCAV2

silver sagebrush · Asteraceae
Artemisia dracunculus L. Native ARDR4

tarragon · Asteraceae
Artemisia frigida Willd. Native ARFR4

prairie sagewort · Asteraceae
Artemisia longifolia Nutt. Native ARLO7

longleaf wormwood · Asteraceae
Artemisia ludoviciana Nutt. Both ARLU

white sagebrush · Asteraceae
Artemisia ludoviciana Nutt. ssp. candicans (Rydb.) D.D. Keck Native ARLUC8

white sagebrush · Asteraceae
Artemisia ludoviciana Nutt. ssp. incompta (Nutt.) D.D. Keck Native ARLUI2

white sagebrush · Asteraceae
Artemisia ludoviciana Nutt. ssp. ludoviciana Native ARLUL2

white sagebrush · Asteraceae
Artemisia michauxiana Besser Native ARMI4

Michaux's wormwood · Asteraceae
Artemisia nova A. Nelson Native ARNO4

black sagebrush · Asteraceae
Artemisia pedatifida Nutt. Native ARPE6

birdfoot sagebrush · Asteraceae
Artemisia scopulorum A. Gray Native ARSC

alpine sagebrush · Asteraceae
Artemisia tridentata Nutt. Native ARTR2

big sagebrush · Asteraceae
Artemisia tridentata Nutt. ssp. tridentata Native ARTRT

basin big sagebrush · Asteraceae
Artemisia tridentata Nutt. ssp. vaseyana (Rydb.) Beetle Native ARTRV

mountain big sagebrush · Asteraceae
Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young Native ARTRW8

Wyoming big sagebrush · Asteraceae
Artemisia tripartita Rydb. Native ARTR4

threetip sagebrush · Asteraceae
Artemisia tripartita Rydb. ssp. rupicola Beetle Native ARTRR2

Wyoming threetip sagebrush · Asteraceae
Asclepias speciosa Torr. Native ASSP

showy milkweed · Asclepiadaceae
Asclepias syriaca L. Native ASSY

common milkweed · Asclepiadaceae
Asparagus officinalis L. Introduced ASOF

garden asparagus · Liliaceae
Asperugo procumbens L. Introduced ASPR

German-madwort · Boraginaceae
Astragalus agrestis Douglas ex G. Don Native ASAG2

purple milkvetch · Fabaceae
Astragalus alpinus L. Native ASAL7

alpine milkvetch · Fabaceae
Astragalus alpinus L. var. alpinus Native ASALA4

alpine milkvetch · Fabaceae
Astragalus americanus (Hook.) M.E. Jones Native ASAM3

American milkvetch · Fabaceae
Astragalus australis (L.) Lam. Native ASAU4

Indian milkvetch · Fabaceae
Astragalus bisulcatus (Hook.) A. Gray Native ASBI2

twogrooved milkvetch · Fabaceae
Astragalus bisulcatus (Hook.) A. Gray var. bisulcatus Native ASBIB

twogrooved milkvetch · Fabaceae
Astragalus canadensis L. Native ASCA11

Canadian milkvetch · Fabaceae
Astragalus canadensis L. var. brevidens (Gandog.) Barneby Native ASCAB

shorttooth Canadian milkvetch · Fabaceae
Astragalus chamaeleuce A. Gray Native ASCH4

cicada milkvetch · Fabaceae
Astragalus chamaeleuce A. Gray var. chamaeleuce Native ASCHC2

cicada milkvetch · Fabaceae
Astragalus cibarius Sheldon Native ASCI2

browse milkvetch · Fabaceae
Astragalus crassicarpus Nutt. Native ASCR2

groundplum milkvetch · Fabaceae
Astragalus drummondii Douglas ex Hook. Native ASDR3

Drummond's milkvetch · Fabaceae
Astragalus eucosmus B.L. Rob. Native ASEU2

elegant milkvetch · Fabaceae
Astragalus gilviflorus Sheldon Native ASGI5

plains milkvetch · Fabaceae
Astragalus gilviflorus Sheldon var. gilviflorus Native ASGIG

plains milkvetch · Fabaceae
Astragalus gracilis Nutt. Native ASGR3

slender milkvetch · Fabaceae
Astragalus grayi Parry ex S. Watson Native ASGR4

Gray's milkvetch · Fabaceae
Astragalus kentrophyta A. Gray Native ASKE

spiny milkvetch · Fabaceae
Astragalus kentrophyta A. Gray var. tegetarius (S. Watson) Dorn Native ASKET

mat milkvetch · Fabaceae
Astragalus laxmannii Jacq. Native ASLA27

Laxmann's milkvetch · Fabaceae
Astragalus laxmannii Jacq. var. robustior (Hook.) Barneby & S.L. Welsh Native ASLAR

prairie milkvetch · Fabaceae
Astragalus lotiflorus Hook. Native ASLO4

lotus milkvetch · Fabaceae
Astragalus miser Douglas ex Hook. Native ASMI9

timber milkvetch · Fabaceae
Astragalus miser Douglas ex Hook. var. decumbens (Nutt. ex Torr. & A. Gray) Cronquist Native ASMID

prostrate milkvetch · Fabaceae
Astragalus miser Douglas ex Hook. var. hylophilus (Rydb.) Barneby Native ASMIH

woody milkvetch · Fabaceae
Astragalus missouriensis Nutt. Native ASMI10

Missouri milkvetch · Fabaceae
Astragalus missouriensis Nutt. var. missouriensis Native ASMIM5

Missouri milkvetch · Fabaceae
Astragalus purshii Douglas ex Hook. Native ASPU9

woollypod milkvetch · Fabaceae
Astragalus purshii Douglas ex Hook. var. purshii Native ASPUP7

woollypod milkvetch · Fabaceae
Astragalus robbinsii (Oakes) A. Gray Native ASRO

Robbins' milkvetch · Fabaceae
Astragalus robbinsii (Oakes) A. Gray var. minor (Hook.) Barneby Native ASROM

Robbins' milkvetch · Fabaceae
Astragalus spatulatus Sheldon Native ASSP6

tufted milkvetch · Fabaceae
Astragalus tenellus Pursh Native ASTE5

looseflower milkvetch · Fabaceae
Astragalus vexilliflexus Sheldon Native ASVE5

bentflower milkvetch · Fabaceae
Astragalus vexilliflexus Sheldon var. vexilliflexus Native ASVEV2

bentflower milkvetch · Fabaceae
Athyrium filix-femina (L.) Roth Native ATFI

common ladyfern · Dryopteridaceae
Athyrium filix-femina (L.) Roth ssp. cyclosorum (Rupr.) C. Chr. Native ATFIC

subarctic ladyfern · Dryopteridaceae
Atriplex argentea Nutt. Native ATAR2

silverscale saltbush · Chenopodiaceae
Atriplex argentea Nutt. ssp. argentea Native ATARA

silverscale saltbush · Chenopodiaceae
Atriplex argentea Nutt. ssp. argentea var. argentea Native ATARA2

silverscale saltbush · Chenopodiaceae
Atriplex canescens (Pursh) Nutt. Native ATCA2

fourwing saltbush · Chenopodiaceae
Atriplex canescens (Pursh) Nutt. var. canescens Native ATCAC

fourwing saltbush · Chenopodiaceae
Atriplex confertifolia (Torr. & Frém.) S. Watson Native ATCO

shadscale saltbush · Chenopodiaceae
Atriplex gardneri (Moq.) D. Dietr. Native ATGA

Gardner's saltbush · Chenopodiaceae
Atriplex hortensis L. Introduced ATHO

garden orache · Chenopodiaceae
Atriplex micrantha Ledeb. Introduced ATMI2

twoscale saltbush · Chenopodiaceae
Atriplex rosea L. Introduced ATRO

tumbling saltweed · Chenopodiaceae
Avena fatua L. Introduced AVFA

wild oat · Poaceae
Avena sativa L. Introduced AVSA

common oat · Poaceae
Avenula hookeri (Scribn.) Holub Native AVHO3

spikeoat · Poaceae
Balsamorhiza incana Nutt. Native BAIN

hoary balsamroot · Asteraceae
Balsamorhiza sagittata (Pursh) Nutt. Native BASA3

arrowleaf balsamroot · Asteraceae
Barbarea orthoceras Ledeb. Native BAOR

American yellowrocket · Brassicaceae
Barbarea vulgaris W.T. Aiton Introduced BAVU

garden yellowrocket · Brassicaceae
Bassia scoparia (L.) A.J. Scott Introduced BASC5

burningbush · Chenopodiaceae
Beckmannia syzigachne (Steud.) Fernald Native BESY

American sloughgrass · Poaceae
Berberis vulgaris L. Introduced BEVU

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

hoary alyssum · Brassicaceae
Berula erecta (Huds.) Coville Native BEER

cutleaf waterparsnip · Apiaceae
Besseya wyomingensis (A. Nelson) Rydb. Native BEWY

Wyoming besseya · Scrophulariaceae
Betula nana L. Native BENA

dwarf birch · Betulaceae
Betula occidentalis Hook. Native BEOC2

water birch · Betulaceae
Bidens cernua L. Native BICE

nodding beggartick · Asteraceae
Bolboschoenus maritimus (L.) Palla Native BOMA7

cosmopolitan bulrush · Cyperaceae
Botrychium lunaria (L.) Sw. Native BOLU

common moonwort · Ophioglossaceae
Botrychium simplex E. Hitchc. Native BOSI

little grapefern · Ophioglossaceae
Botrychium virginianum (L.) Sw. Native BOVI

rattlesnake fern · Ophioglossaceae
Bouteloua gracilis (Willd. ex Kunth) Lag. ex Griffiths Native BOGR2

blue grama · Poaceae
Brassica juncea (L.) Czern. Introduced BRJU

brown mustard · Brassicaceae
Brassica rapa L. Introduced BRRA

field mustard · Brassicaceae
Brassica rapa L. var. rapa Introduced BRRAR

field mustard · Brassicaceae
Brickellia grandiflora (Hook.) Nutt. Native BRGR

tasselflower brickellbush · Asteraceae
Bromus arvensis L. Introduced BRAR5

field brome · Poaceae
Bromus briziformis Fisch. & C.A. Mey. Introduced BRBR5

rattlesnake brome · Poaceae
Bromus ciliatus L. Native BRCI2

fringed brome · Poaceae
Bromus inermis Leyss. Both BRIN2

smooth brome · Poaceae
Bromus inermis Leyss. ssp. inermis Introduced BRINI

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

smooth brome · Poaceae
Bromus inermis Leyss. ssp. pumpellianus (Scribn.) Wagnon Native BRINP

Pumpelly's brome · Poaceae
Bromus inermis Leyss. ssp. pumpellianus (Scribn.) Wagnon var. pumpellianus (Scribn.) C.L. Hitchc. Native BRINP5

Pumpelly's brome · Poaceae
Bromus marginatus Nees ex Steud. Native BRMA4

mountain brome · Poaceae
Bromus porteri (J.M. Coult.) Nash Native BRPO2

Porter brome · Poaceae
Bromus racemosus L. Introduced BRRA2

bald brome · Poaceae
Bromus tectorum L. Introduced BRTE

cheatgrass · Poaceae
Bryonia alba L. Introduced BRAL4

white bryony · Cucurbitaceae
Buglossoides arvensis (L.) I.M. Johnst. Introduced BUAR3

corn gromwell · Boraginaceae
Bupleurum americanum J.M. Coult. & Rose Native BUAM2

American thorow wax · Apiaceae
Calamagrostis canadensis (Michx.) P. Beauv. Native CACA4

bluejoint · Poaceae
Calamagrostis purpurascens R. Br. Native CAPU

purple reedgrass · Poaceae
Calamagrostis purpurascens R. Br. var. purpurascens Native CAPUP7

purple reedgrass · Poaceae
Calamagrostis rubescens Buckley Native CARU

pinegrass · Poaceae
Calamagrostis stricta (Timm) Koeler Native CAST36

slimstem reedgrass · Poaceae
Calamagrostis stricta (Timm) Koeler ssp. inexpansa (A. Gray) C.W. Greene Native CASTI3

northern reedgrass · Poaceae
Calamovilfa longifolia (Hook.) Scribn. Native CALO

prairie sandreed · Poaceae
Calamovilfa longifolia (Hook.) Scribn. var. longifolia Native CALOL2

prairie sandreed · Poaceae
Callitriche hermaphroditica L. Native CAHE2

northern water-starwort · Callitrichaceae
Callitriche palustris L. Native CAPA52

vernal water-starwort · Callitrichaceae
Calochortus eurycarpus S. Watson Native CAEU

white mariposa lily · Liliaceae
Calochortus gunnisonii S. Watson Native CAGU

Gunnison's mariposa lily · Liliaceae
Calochortus gunnisonii S. Watson var. gunnisonii Native CAGUG

Gunnison's mariposa lily · Liliaceae
Calochortus nuttallii Torr. & A. Gray Native CANU3

sego lily · Liliaceae
Caltha leptosepala DC. Native CALE4

white marsh marigold · Ranunculaceae
Caltha leptosepala DC. ssp. leptosepala Native CALEL7

white marsh marigold · Ranunculaceae
Caltha leptosepala DC. ssp. leptosepala var. leptosepala Native CALEL8

white marsh marigold · Ranunculaceae
Calypso bulbosa (L.) Oakes Native CABU

fairy slipper · Orchidaceae
Calypso bulbosa (L.) Oakes var. americana (R. Br.) Luer Native CABUA

fairy slipper · Orchidaceae
Calystegia sepium (L.) R. Br. Both CASE13

hedge false bindweed · Convolvulaceae
Calystegia sepium (L.) R. Br. ssp. angulata Brummitt Native CASEA3

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

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

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

gold-of-pleasure · Brassicaceae
Camissonia breviflora (Torr. & A. Gray) P.H. Raven Native CABR22

fewflower evening primrose · Onagraceae
Camissonia scapoidea (Nutt. ex Torr. & A. Gray) P.H. Raven Native CASC18

Paiute suncup · Onagraceae
Camissonia scapoidea (Nutt. ex Torr. & A. Gray) P.H. Raven ssp. scapoidea Native CASCS3

Paiute suncup · Onagraceae
Camissonia subacaulis (Pursh) P.H. Raven Native CASU18

diffuseflower evening primrose · Onagraceae
Campanula glomerata L. Introduced CAGL2

Dane's blood · Campanulaceae
Campanula rapunculoides L. Introduced CARA

rampion bellflower · Campanulaceae
Campanula rotundifolia L. Native CARO2

bluebell bellflower · Campanulaceae
Campanula uniflora L. Native CAUN2

arctic bellflower · Campanulaceae
Canadanthus modestus (Lindl.) G.L. Nesom Native CAMO32

giant mountain aster · Asteraceae
Capsella bursa-pastoris (L.) Medik. Introduced CABU2

shepherd's purse · Brassicaceae
Caragana arborescens Lam. Introduced CAAR18

Siberian peashrub · Fabaceae
Cardamine breweri S. Watson Native CABR6

Brewer's bittercress · Brassicaceae
Cardamine pensylvanica Muhl. ex Willd. Native CAPE3

Pennsylvania bittercress · Brassicaceae
Cardaria chalepensis (L.) Hand.-Maz. Introduced CACH42

lenspod whitetop · Brassicaceae
Cardaria draba (L.) Desv. Introduced CADR

whitetop · Brassicaceae
Cardaria pubescens (C.A. Mey.) Jarmolenko Introduced CAPU6

hairy whitetop · Brassicaceae
Carduus nutans L. Introduced CANU4

nodding plumeless thistle · Asteraceae
Carex albonigra Mack. Native CAAL6

blackandwhite sedge · Cyperaceae
Carex aquatilis Wahlenb. Native CAAQ

water sedge · Cyperaceae
Carex aquatilis Wahlenb. var. aquatilis Native CAAQA

water sedge · Cyperaceae
Carex arapahoensis Clokey Native CAAR13

Arapaho sedge · Cyperaceae
Carex athrostachya Olney Native CAAT3

slenderbeak sedge · Cyperaceae
Carex aurea Nutt. Native CAAU3

golden sedge · Cyperaceae
Carex backii Boott Native CABA3

Back's sedge · Cyperaceae
Carex bolanderi Olney Native CABO2

Bolander's sedge · Cyperaceae
Carex brevior (Dewey) Mack. Native CABR10

shortbeak sedge · Cyperaceae
Carex brunnescens (Pers.) Poir. Native CABR15

brownish sedge · Cyperaceae
Carex brunnescens (Pers.) Poir. ssp. sphaerostachya (Tuck.) Kalela Native CABRS

brownish sedge · Cyperaceae
Carex buxbaumii Wahlenb. Native CABU6

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

silvery sedge · Cyperaceae
Carex canescens L. ssp. canescens Native CACAC6

silvery sedge · Cyperaceae
Carex capillaris L. Native CACA12

hair-like sedge · Cyperaceae
Carex capitata L. Native CACA13

capitate sedge · Cyperaceae
Carex capitata L. ssp. arctogena (Harry Sm.) Hiitonen Native CACAA2

capitate sedge · Cyperaceae
Carex diandra Schrank Native CADI4

lesser panicled sedge · Cyperaceae
Carex disperma Dewey Native CADI6

softleaf sedge · Cyperaceae
Carex douglasii Boott Native CADO2

Douglas' sedge · Cyperaceae
Carex duriuscula C.A. Mey. Native CADU6

needleleaf sedge · Cyperaceae
Carex elynoides T. Holm Native CAEL3

blackroot sedge · Cyperaceae
Carex engelmannii L.H. Bailey Native CAEN3

Engelmann's sedge · Cyperaceae
Carex filifolia Nutt. Native CAFI

threadleaf sedge · Cyperaceae
Carex geyeri Boott Native CAGE2

Geyer's sedge · Cyperaceae
Carex gynocrates Wormsk. ex Drejer Native CAGY2

northern bog sedge · Cyperaceae
Carex haydeniana Olney Native CAHA6

cloud sedge · Cyperaceae
Carex heteroneura W. Boott Native CAHE8

different-nerve sedge · Cyperaceae
Carex heteroneura W. Boott var. chalciolepis (T. Holm) F.J. Herm. Native CAHEC

Holm sedge · Cyperaceae
Carex heteroneura W. Boott var. epapillosa (Mack.) F.J. Herm. Native CAHEE

different-nerve sedge · Cyperaceae
Carex hoodii Boott Native CAHO5

Hood's sedge · Cyperaceae
Carex illota L.H. Bailey Native CAIL

sheep sedge · Cyperaceae
Carex incurviformis Mack. Native CAIN8

coastal sand sedge · Cyperaceae
Carex incurviformis Mack. var. danaensis (Stacey) F.J. Herm. Native CAIND

coastal sand sedge · Cyperaceae
Carex infirminervia Naczi Native CAIN7

weak-nerved sedge · Cyperaceae
Carex interior L.H. Bailey Native CAIN11

inland sedge · Cyperaceae
Carex lachenalii Schkuhr Native CALA10

twotipped sedge · Cyperaceae
Carex lenticularis Michx. Native CALE8

lakeshore sedge · Cyperaceae
Carex lenticularis Michx. var. dolia (M.E. Jones) L.A. Standl. Native CALED

Enander's sedge · Cyperaceae
Carex lenticularis Michx. var. lipocarpa (T. Holm) L.A. Standl. Native CALEL3

Kellogg's sedge · Cyperaceae
Carex leporinella Mack. Native CALE9

Sierra hare sedge · Cyperaceae
Carex leptalea Wahlenb. Native CALE10

bristlystalked sedge · Cyperaceae
Carex leptalea Wahlenb. ssp. leptalea Native CALEL4

bristlystalked sedge · Cyperaceae
Carex limosa L. Native CALI7

mud sedge · Cyperaceae
Carex livida (Wahlenb.) Willd. Native CALI

livid sedge · Cyperaceae
Carex livida (Wahlenb.) Willd. var. radicaulis Paine Native CALIR

livid sedge · Cyperaceae
Carex microglochin Wahlenb. Native CAMI6

fewseeded bog sedge · Cyperaceae
Carex microptera Mack. Native CAMI7

smallwing sedge · Cyperaceae
Carex misandra R. Br. Native CAMI10

shortleaved sedge · Cyperaceae
Carex nardina Fr. Native CANA2

spike sedge · Cyperaceae
Carex nardina Fr. var. hepburnii (Boott) Kük. Native CANAH

Hepburn's sedge · Cyperaceae
Carex nebrascensis Dewey Native CANE2

Nebraska sedge · Cyperaceae
Carex nelsonii Mack. Native CANE3

Nelson's sedge · Cyperaceae
Carex neurophora Mack. Native CANE6

alpine nerve sedge · Cyperaceae
Carex nigricans C.A. Mey. Native CANI2

black alpine sedge · Cyperaceae
Carex norvegica Retz. Native CANO2

Norway sedge · Cyperaceae
Carex norvegica Retz. ssp. stevenii (T. Holm) A.E. Murray Native CANOS

Steven's sedge · Cyperaceae
Carex nova L.H. Bailey Native CANO3

black sedge · Cyperaceae
Carex obtusata Lilj. Native CAOB4

obtuse sedge · Cyperaceae
Carex occidentalis L.H. Bailey Native CAOC2

western sedge · Cyperaceae
Carex pachystachya Cham. ex Steud. Native CAPA14

chamisso sedge · Cyperaceae
Carex paysonis Clokey Native CAPA31

Payson's sedge · Cyperaceae
Carex pellita Muhl. ex Willd. Native CAPE42

woolly sedge · Cyperaceae
Carex pelocarpa F.J. Herm. Native CAPE5

duskyseed sedge · Cyperaceae
Carex petasata Dewey Native CAPE7

Liddon sedge · Cyperaceae
Carex phaeocephala Piper Native CAPH2

dunhead sedge · Cyperaceae
Carex platylepis Mack. Native CAPL8

broadscale sedge · Cyperaceae
Carex praeceptorum Mack. Native CAPR22

early sedge · Cyperaceae
Carex praegracilis W. Boott Native CAPR5

clustered field sedge · Cyperaceae
Carex praticola Rydb. Native CAPR7

meadow sedge · Cyperaceae
Carex pyrenaica Wahlenb. Native CAPY3

Pyrenean sedge · Cyperaceae
Carex pyrenaica Wahlenb. ssp. pyrenaica Native CAPYP

Pyrenean sedge · Cyperaceae
Carex raynoldsii Dewey Native CARA6

Raynolds' sedge · Cyperaceae
Carex rossii Boott Native CARO5

Ross' sedge · Cyperaceae
Carex rostrata Stokes Native CARO6

beaked sedge · Cyperaceae
Carex rupestris All. Native CARU3

curly sedge · Cyperaceae
Carex rupestris All. var. drummondiana (Dewey) L.H. Bailey Native CARUD

Drummond's sedge · Cyperaceae
Carex sartwellii Dewey Native CASA8

Sartwell's sedge · Cyperaceae
Carex sartwellii Dewey var. sartwellii Native CASAS5

Sartwell's sedge · Cyperaceae
Carex scirpoidea Michx. Native CASC10

northern singlespike sedge · Cyperaceae
Carex scirpoidea Michx. ssp. pseudoscirpoidea (Rydb.) Dunlop Native CASCP3

western singlespike sedge · Cyperaceae
Carex scirpoidea Michx. ssp. scirpoidea Native CASCS8

northern singlespike sedge · Cyperaceae
Carex scopulorum T. Holm Native CASC12

mountain sedge · Cyperaceae
Carex scopulorum T. Holm var. scopulorum Native CASCS2

mountain sedge · Cyperaceae
Carex siccata Dewey Native CASI12

dryspike sedge · Cyperaceae
Carex simulata Mack. Native CASI2

analogue sedge · Cyperaceae
Carex sprengelii Dewey ex Spreng. Native CASP7

Sprengel's sedge · Cyperaceae
Carex stenoptila F.J. Herm. Native CAST4

riverbank sedge · Cyperaceae
Carex stipata Muhl. ex Willd. Native CAST5

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

owlfruit sedge · Cyperaceae
Carex subnigricans Stacey Native CASU7

nearlyblack sedge · Cyperaceae
Carex utriculata Boott Native CAUT

Northwest Territory sedge · Cyperaceae
Carex vallicola Dewey Native CAVA3

valley sedge · Cyperaceae
Carex vallicola Dewey var. vallicola Native CAVAV

valley sedge · Cyperaceae
Carex ×physocarpoides Lepage Native CAPH3

sedge · Cyperaceae
Carum carvi L. Introduced CACA19

caraway · Apiaceae
Cassiope mertensiana (Bong.) G. Don Native CAME7

western moss heather · Ericaceae
Cassiope mertensiana (Bong.) G. Don var. gracilis (Piper) C.L. Hitchc. Native CAMEG

western moss heather · Ericaceae
Castilleja angustifolia (Nutt.) G. Don Native CAAN7

northwestern Indian paintbrush · Scrophulariaceae
Castilleja angustifolia (Nutt.) G. Don var. angustifolia Native CAANA3

northwestern Indian paintbrush · Scrophulariaceae
Castilleja applegatei Fernald Native CAAP4

wavyleaf Indian paintbrush · Scrophulariaceae
Castilleja crista-galli Rydb. Native CACR13

mountainside Indian paintbrush · Scrophulariaceae
Castilleja cusickii Greenm. Native CACU7

Cusick's Indian paintbrush · Scrophulariaceae
Castilleja flava S. Watson Native CAFL7

yellow Indian paintbrush · Scrophulariaceae
Castilleja flava S. Watson var. flava Native CAFLF3

yellow Indian paintbrush · Scrophulariaceae
Castilleja linariifolia Benth. Native CALI4

Wyoming Indian paintbrush · Scrophulariaceae
Castilleja miniata Douglas ex Hook. Native CAMI12

giant red Indian paintbrush · Scrophulariaceae
Castilleja miniata Douglas ex Hook. ssp. miniata Native CAMIM5

giant red Indian paintbrush · Scrophulariaceae
Castilleja nivea Pennell & Ownbey Native CANI8

snow Indian paintbrush · Scrophulariaceae
Castilleja pallescens (A. Gray) Greenm. Native CAPA25

pale Indian paintbrush · Scrophulariaceae
Castilleja pallescens (A. Gray) Greenm. var. pallescens Native CAPAP7

pale Indian paintbrush · Scrophulariaceae
Castilleja pilosa (S. Watson) Rydb. Native CAPI3

parrothead Indian paintbrush · Scrophulariaceae
Castilleja pilosa (S. Watson) Rydb. var. longispica (A. Nelson) N.H. Holmgren Native CAPIL

longspike Indian paintbrush · Scrophulariaceae
Castilleja pulchella Rydb. Native CAPU10

beautiful Indian paintbrush · Scrophulariaceae
Castilleja rhexiifolia Rydb. Native CARH4

splitleaf Indian paintbrush · Scrophulariaceae
Castilleja sulphurea Rydb. Native CASU12

sulphur Indian paintbrush · Scrophulariaceae
Catabrosa aquatica (L.) P. Beauv. Native CAAQ3

water whorlgrass · Poaceae
Catabrosa aquatica (L.) P. Beauv. var. aquatica Native CAAQA6

water whorlgrass · Poaceae
Ceanothus velutinus Douglas ex Hook. Native CEVE

snowbrush ceanothus · Rhamnaceae
Ceanothus velutinus Douglas ex Hook. var. velutinus Native CEVEV4

snowbrush ceanothus · Rhamnaceae
Centaurea cyanus L. Introduced CECY2

garden cornflower · Asteraceae
Centaurea stoebe L. Introduced CEST8

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

spotted knapweed · Asteraceae
Cerastium arvense L. Both CEAR4

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

field chickweed · Caryophyllaceae
Cerastium beeringianum Cham. & Schltdl. Native CEBE2

Bering chickweed · Caryophyllaceae
Cerastium beeringianum Cham. & Schltdl. ssp. earlei (Rydb.) Hultén Native CEBEE

Bering chickweed · Caryophyllaceae
Cerastium fontanum Baumg. Introduced CEFO2

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

big chickweed · Caryophyllaceae
Cerastium nutans Raf. Native CENU2

nodding chickweed · Caryophyllaceae
Cerastium nutans Raf. var. nutans Native CENUN

nodding chickweed · Caryophyllaceae
Ceratocephala testiculata (Crantz) Roth Introduced CETE5

curveseed butterwort · Ranunculaceae
Chaenactis douglasii (Hook.) Hook. & Arn. Native CHDO

Douglas' dustymaiden · Asteraceae
Chaenactis douglasii (Hook.) Hook. & Arn. var. alpina A. Gray Native CHDOA2

alpine dustymaiden · Asteraceae
Chamaerhodos erecta (L.) Bunge Native CHER

little rose · Rosaceae
Chamaerhodos erecta (L.) Bunge ssp. nuttallii (Pickering ex Rydb.) Hultén Native CHERN

Nuttall's little rose · Rosaceae
Chamaesyce glyptosperma (Engelm.) Small Native CHGL13

ribseed sandmat · Euphorbiaceae
Chamaesyce serpyllifolia (Pers.) Small Native CHSE6

thymeleaf sandmat · Euphorbiaceae
Chamaesyce serpyllifolia (Pers.) Small ssp. serpyllifolia Native CHSES

thymeleaf sandmat · Euphorbiaceae
Chamerion angustifolium (L.) Holub Native CHAN9

fireweed · Onagraceae
Chamerion angustifolium (L.) Holub ssp. angustifolium Native CHANA2

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

fireweed · Onagraceae
Chamerion latifolium (L.) Holub Native CHLA13

dwarf fireweed · Onagraceae
Cheilanthes feei T. Moore Native CHFE

slender lipfern · Pteridaceae
Chenopodium album L. Both CHAL7

lambsquarters · Chenopodiaceae
Chenopodium album L. var. album Introduced CHALA

lambsquarters · Chenopodiaceae
Chenopodium atrovirens Rydb. Native CHAT

pinyon goosefoot · Chenopodiaceae
Chenopodium berlandieri Moq. Native CHBE4

pitseed goosefoot · Chenopodiaceae
Chenopodium berlandieri Moq. var. zschackii (Murr) Murr ex Asch. Native CHBEZ

Zschack's goosefoot · Chenopodiaceae
Chenopodium capitatum (L.) Asch. Native CHCA4

blite goosefoot · Chenopodiaceae
Chenopodium chenopodioides (L.) Aellen Native CHCH

low goosefoot · Chenopodiaceae
Chenopodium fremontii S. Watson Native CHFR3

Fremont's goosefoot · Chenopodiaceae
Chenopodium fremontii S. Watson var. fremontii Native CHFRF

Fremont's goosefoot · Chenopodiaceae
Chenopodium glaucum L. Introduced CHGL3

oakleaf goosefoot · Chenopodiaceae
Chenopodium leptophyllum (Moq.) Nutt. ex S. Watson Native CHLE4

narrowleaf goosefoot · Chenopodiaceae
Chenopodium overi Aellen Native CHOV

Over's goosefoot · Chenopodiaceae
Chenopodium pratericola Rydb. Native CHPR5

desert goosefoot · Chenopodiaceae
Chenopodium salinum Standl. Native CHSA2

Rocky Mountain goosefoot · Chenopodiaceae
Chenopodium simplex (Torr.) Raf. Native CHSI2

mapleleaf goosefoot · Chenopodiaceae
Chimaphila umbellata (L.) W.P.C. Barton Native CHUM

pipsissewa · Pyrolaceae
Chimaphila umbellata (L.) W.P.C. Barton ssp. occidentalis (Rydb.) Hultén Native CHUMO2

pipsissewa · Pyrolaceae
Chorispora tenella (Pall.) DC. Introduced CHTE2

crossflower · Brassicaceae
Chrysothamnus linifolius Greene Native CHLI3

spearleaf rabbitbrush · Asteraceae
Chrysothamnus viscidiflorus (Hook.) Nutt. Native CHVI8

yellow rabbitbrush · Asteraceae
Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. lanceolatus (Nutt.) H.M. Hall & Clem. Native CHVIL4

yellow rabbitbrush · Asteraceae
Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. viscidiflorus Native CHVIV2

yellow rabbitbrush · Asteraceae
Cichorium intybus L. Introduced CIIN

chicory · Asteraceae
Cicuta douglasii (DC.) J.M. Coult. & Rose Native CIDO

western water hemlock · Apiaceae
Cicuta maculata L. Native CIMA2

spotted water hemlock · Apiaceae
Cicuta maculata L. var. angustifolia Hook. Native CIMAA

spotted water hemlock · Apiaceae
Cinna latifolia (Trevis. ex Goepp.) Griseb. Native CILA2

drooping woodreed · Poaceae
Circaea alpina L. Native CIAL

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

small enchanter's nightshade · Onagraceae
Cirsium arvense (L.) Scop. Introduced CIAR4

Canada thistle · Asteraceae
Cirsium eatonii (A. Gray) B.L. Rob. Native CIEA

Eaton's thistle · Asteraceae
Cirsium flodmanii (Rydb.) Arthur Native CIFL

Flodman's thistle · Asteraceae
Cirsium foliosum (Hook.) DC. Native CIFO

elk thistle · Asteraceae
Cirsium hookerianum Nutt. Native CIHO

white thistle · Asteraceae
Cirsium ochrocentrum A. Gray Native CIOC2

yellowspine thistle · Asteraceae
Cirsium ochrocentrum A. Gray ssp. ochrocentrum Native CIOCO2

yellowspine thistle · Asteraceae
Cirsium scariosum Nutt. Native CISC2

meadow thistle · Asteraceae
Cirsium subniveum Rydb. Native CISU

Jackson Hole thistle · Asteraceae
Cirsium undulatum (Nutt.) Spreng. Native CIUN

wavyleaf thistle · Asteraceae
Cirsium undulatum (Nutt.) Spreng. var. undulatum Native CIUNU

wavyleaf thistle · Asteraceae
Cirsium vulgare (Savi) Ten. Introduced CIVU

bull thistle · Asteraceae
Cistanthe umbellata (Torr.) Hershkovitz Native CIUM

Mt. Hood pussypaws · Portulacaceae
Cistanthe umbellata (Torr.) Hershkovitz var. caudicifera (A. Gray) Kartesz & Gandhi Native CIUMC

Mt. Hood pussypaws · Portulacaceae
Claytonia lanceolata Pall. ex Pursh Native CLLA2

lanceleaf springbeauty · Portulacaceae
Claytonia lanceolata Pall. ex Pursh var. lanceolata Native CLLAL

lanceleaf springbeauty · Portulacaceae
Claytonia megarhiza (A. Gray) Parry ex S. Watson Native CLME

alpine springbeauty · Portulacaceae
Claytonia megarhiza (A. Gray) Parry ex S. Watson var. megarhiza Native CLMEM

alpine springbeauty · Portulacaceae
Claytonia perfoliata Donn ex Willd. Native CLPE

miner's lettuce · Portulacaceae
Claytonia perfoliata Donn ex Willd. ssp. perfoliata Native CLPEP

miner's lettuce · Portulacaceae
Clematis columbiana (Nutt.) Torr. & A. Gray Native CLCO2

rock clematis · Ranunculaceae
Clematis columbiana (Nutt.) Torr. & A. Gray var. tenuiloba (A. Gray) J. Pringle Native CLCOT

rock clematis · Ranunculaceae
Clematis hirsutissima Pursh Native CLHI

hairy clematis · Ranunculaceae
Clematis hirsutissima Pursh var. hirsutissima Native CLHIH

hairy clematis · Ranunculaceae
Clematis ligusticifolia Nutt. Native CLLI2

western white clematis · Ranunculaceae
Clematis ligusticifolia Nutt. var. ligusticifolia Native CLLIL2

western white clematis · Ranunculaceae
Clematis occidentalis (Hornem.) DC. Native CLOC2

western blue virginsbower · Ranunculaceae
Clematis occidentalis (Hornem.) DC. var. grosseserrata (Rydb.) J. Pringle Native CLOCG

western blue virginsbower · Ranunculaceae
Cleome lutea Hook. Native CLLU2

yellow spiderflower · Capparaceae
Cleome lutea Hook. var. lutea Native CLLUL

yellow spiderflower · Capparaceae
Cleome serrulata Pursh Native CLSE

Rocky Mountain beeplant · Capparaceae
Clintonia uniflora (Menzies ex Schult. & Schult. f.) Kunth Native CLUN2

bride's bonnet · Liliaceae
Collinsia parviflora Lindl. Native COPA3

maiden blue eyed Mary · Scrophulariaceae
Collomia debilis (S. Watson) Greene Native CODE

alpine collomia · Polemoniaceae
Collomia debilis (S. Watson) Greene var. trifida Payson Native CODET

alpine collomia · Polemoniaceae
Collomia linearis Nutt. Native COLI2

tiny trumpet · Polemoniaceae
Collomia tenella A. Gray Native COTE

diffuse collomia · Polemoniaceae
Comandra umbellata (L.) Nutt. Native COUM

bastard toadflax · Santalaceae
Comandra umbellata (L.) Nutt. ssp. pallida (A. DC.) Piehl Native COUMP

pale bastard toadflax · Santalaceae
Conimitella williamsii (D.C. Eaton) Rydb. Native COWI

Williams' miterwort · Saxifragaceae
Conium maculatum L. Introduced COMA2

poison hemlock · Apiaceae
Conringia orientalis (L.) Dumort. Introduced COOR

hare's ear mustard · Brassicaceae
Convolvulus arvensis L. Introduced COAR4

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

Canadian horseweed · Asteraceae
Conyza canadensis (L.) Cronquist var. canadensis Native COCAC3

Canadian horseweed · Asteraceae
Conyza canadensis (L.) Cronquist var. glabrata (A. Gray) Cronquist Native COCAG

Canadian horseweed · Asteraceae
Corallorhiza maculata (Raf.) Raf. Native COMA25

summer coralroot · Orchidaceae
Corallorhiza striata Lindl. Native COST19

hooded coralroot · Orchidaceae
Corallorhiza trifida Chatelain Native COTR18

yellow coralroot · Orchidaceae
Corallorhiza wisteriana Conrad Native COWI5

spring coralroot · Orchidaceae
Cornus sericea L. Native COSE16

redosier dogwood · Cornaceae
Cornus sericea L. ssp. sericea Native COSES

redosier dogwood · Cornaceae
Corydalis aurea Willd. Native COAU2

scrambled eggs · Fumariaceae
Crepis acuminata Nutt. Native CRAC2

tapertip hawksbeard · Asteraceae
Crepis acuminata Nutt. ssp. acuminata Native CRACA

tapertip hawksbeard · Asteraceae
Crepis atribarba A. Heller Native CRAT

slender hawksbeard · Asteraceae
Crepis atribarba A. Heller ssp. originalis (Babc. & Stebbins) Babc. & Stebbins Native CRATO

slender hawksbeard · Asteraceae
Crepis elegans Hook. Native CREL

elegant hawksbeard · Asteraceae
Crepis intermedia A. Gray Native CRIN4

limestone hawksbeard · Asteraceae
Crepis modocensis Greene Native CRMO4

Modoc hawksbeard · Asteraceae
Crepis modocensis Greene ssp. modocensis Native CRMOM

Modoc hawksbeard · Asteraceae
Crepis nana Richardson Native CRNA

dwarf alpine hawksbeard · Asteraceae
Crepis nana Richardson ssp. nana Native CRNAN

dwarf alpine hawksbeard · Asteraceae
Crepis occidentalis Nutt. Native CROC

largeflower hawksbeard · Asteraceae
Crepis runcinata (James) Torr. & A. Gray Native CRRU3

fiddleleaf hawksbeard · Asteraceae
Crepis runcinata (James) Torr. & A. Gray ssp. glauca (Nutt.) Babc. & Stebbins Native CRRUG

fiddleleaf hawksbeard · Asteraceae
Crepis runcinata (James) Torr. & A. Gray ssp. runcinata Native CRRUR

fiddleleaf hawksbeard · Asteraceae
Cryptantha caespitosa (A. Nelson) Payson Native CRCA7

tufted cryptantha · Boraginaceae
Cryptantha celosioides (Eastw.) Payson Native CRCE

buttecandle · Boraginaceae
Cryptantha kelseyana Greene Native CRKE

Kelsey's cryptantha · Boraginaceae
Cryptantha spiculifera (Piper) Payson Native CRSP4

Snake River cryptantha · Boraginaceae
Cryptantha torreyana (A. Gray) Greene Native CRTO4

Torrey's cryptantha · Boraginaceae
Cryptantha watsonii (A. Gray) Greene Native CRWA2

Watson's cryptantha · Boraginaceae
Cryptogramma acrostichoides R. Br. Native CRAC3

American rockbrake · Pteridaceae
Cuscuta epithymum (L.) L. Introduced CUEP

clover dodder · Cuscutaceae
Cyclachaena xanthiifolia (Nutt.) Fresen. Native CYXA2

carelessweed · Asteraceae
Cymopterus acaulis (Pursh) Raf. Native CYAC

plains springparsley · Apiaceae
Cymopterus acaulis (Pursh) Raf. var. acaulis Native CYACA

plains springparsley · Apiaceae
Cymopterus evertii R.L. Hartm. & Kirkpatrick Native CYEV

Evert's springparsley · Apiaceae
Cymopterus nivalis S. Watson Native CYNI3

snowline springparsley · Apiaceae
Cynoglossum officinale L. Introduced CYOF

gypsyflower · Boraginaceae
Cystopteris fragilis (L.) Bernh. Native CYFR2

brittle bladderfern · Dryopteridaceae
Dactylis glomerata L. Introduced DAGL

orchardgrass · Poaceae
Dactylis glomerata L. ssp. glomerata Introduced DAGLG

orchardgrass · Poaceae
Dalea candida Michx. ex Willd. Native DACA7

white prairie clover · Fabaceae
Dalea candida Michx. ex Willd. var. oligophylla (Torr.) Shinners Native DACAO

white prairie clover · Fabaceae
Dalea purpurea Vent. Native DAPU5

purple prairie clover · Fabaceae
Dalea purpurea Vent. var. purpurea Native DAPUP

purple prairie clover · Fabaceae
Danthonia californica Bol. Native DACA3

California oatgrass · Poaceae
Danthonia intermedia Vasey Native DAIN

timber oatgrass · Poaceae
Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. Native DASP2

poverty oatgrass · Poaceae
Danthonia unispicata (Thurb.) Munro ex Macoun Native DAUN

onespike danthonia · Poaceae
Dasiphora fruticosa (L.) Rydb. Native DAFR6

shrubby cinquefoil · Rosaceae
Dasiphora fruticosa (L.) Rydb. ssp. floribunda (Pursh) Kartesz Native DAFRF

shrubby cinquefoil · Rosaceae
Delphinium andersonii A. Gray Native DEAN

Anderson's larkspur · Ranunculaceae
Delphinium bicolor Nutt. Native DEBI

little larkspur · Ranunculaceae
Delphinium bicolor Nutt. ssp. bicolor Native DEBIB

little larkspur · Ranunculaceae
Delphinium geyeri Greene Native DEGE2

Geyer's larkspur · Ranunculaceae
Delphinium glaucum S. Watson Native DEGL3

Sierra larkspur · Ranunculaceae
Delphinium nuttallianum Pritz. ex Walp. Native DENU2

twolobe larkspur · Ranunculaceae
Delphinium ×occidentale (S. Watson) S. Watson (pro sp.) [barbeyi × glaucum] Native DEOC

Ranunculaceae
Deschampsia cespitosa (L.) P. Beauv. Native DECE

tufted hairgrass · Poaceae
Deschampsia danthonioides (Trin.) Munro Native DEDA

annual hairgrass · Poaceae
Deschampsia elongata (Hook.) Munro Native DEEL

slender hairgrass · Poaceae
Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn Native DEIN5

mountain tansymustard · Brassicaceae
Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn ssp. incana Native DEINI

mountain tansymustard · Brassicaceae
Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn ssp. procera (Greene) Kartesz & Gandhi Native DEINP

mountain tansymustard · Brassicaceae
Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn ssp. viscosa (Rydb.) Kartesz & Gandhi Native DEINV

mountain tansymustard · Brassicaceae
Descurainia pinnata (Walter) Britton Native DEPI

western tansymustard · Brassicaceae
Descurainia pinnata (Walter) Britton ssp. halictorum (Cockerell) Detling Native DEPIH

western tansymustard · Brassicaceae
Descurainia pinnata (Walter) Britton ssp. intermedia (Rydb.) Detling Native DEPII

western tansymustard · Brassicaceae
Descurainia pinnata (Walter) Britton ssp. nelsonii (Rydb.) Detling Native DEPIN

Nelson's tansymustard · Brassicaceae
Descurainia sophia (L.) Webb ex Prantl Introduced DESO2

herb sophia · Brassicaceae
Dianthus barbatus L. Introduced DIBA

sweetwilliam · Caryophyllaceae
Dicentra uniflora Kellogg Native DIUN

longhorn steer's-head · Fumariaceae
Dipsacus fullonum L. Introduced DIFU2

Fuller's teasel · Dipsacaceae
Dodecatheon conjugens Greene Native DOCO

Bonneville shootingstar · Primulaceae
Dodecatheon conjugens Greene ssp. conjugens Native DOCOC3

Bonneville shootingstar · Primulaceae
Dodecatheon pulchellum (Raf.) Merr. Native DOPU

darkthroat shootingstar · Primulaceae
Dodecatheon pulchellum (Raf.) Merr. ssp. pulchellum Native DOPUP2

darkthroat shootingstar · Primulaceae
Douglasia montana A. Gray Native DOMO

Rocky Mountain dwarf-primrose · Primulaceae
Draba albertina Greene Native DRAL4

slender draba · Brassicaceae
Draba aurea Vahl ex Hornem. Native DRAU

golden draba · Brassicaceae
Draba brachycarpa Nutt. ex Torr. & A. Gray Native DRBR

shortpod draba · Brassicaceae
Draba breweri S. Watson Native DRBR2

cushion draba · Brassicaceae
Draba breweri S. Watson var. cana (Rydb.) Rollins Native DRBRC

cushion draba · Brassicaceae
Draba calcifuga Lesica Native DRCA

Lesica's draba · Brassicaceae
Draba crassa Rydb. Native DRCR

thickleaf draba · Brassicaceae
Draba crassifolia Graham Native DRCR2

snowbed draba · Brassicaceae
Draba densifolia Nutt. Native DRDE

denseleaf draba · Brassicaceae
Draba fladnizensis Wulfen Native DRFL

Austrian draba · Brassicaceae
Draba glabella Pursh Native DRGL

smooth draba · Brassicaceae
Draba glabella Pursh var. glabella Native DRGLG2

smooth draba · Brassicaceae
Draba globosa Payson Native DRGL6

beavertip draba · Brassicaceae
Draba incerta Payson Native DRIN2

Yellowstone draba · Brassicaceae
Draba incerta Payson var. incerta Native DRINI4

Yellowstone draba · Brassicaceae
Draba lonchocarpa Rydb. Native DRLO

lancepod draba · Brassicaceae
Draba lonchocarpa Rydb. var. lonchocarpa Native DRLOL

lancepod draba · Brassicaceae
Draba nemorosa L. Native DRNE

woodland draba · Brassicaceae
Draba oligosperma Hook. Native DROL

fewseed draba · Brassicaceae
Draba paysonii J.F. Macbr. Native DRPA

Payson's draba · Brassicaceae
Draba porsildii G. Mulligan Native DRPO2

Porsild's draba · Brassicaceae
Draba praealta Greene Native DRPR

tall draba · Brassicaceae
Draba ventosa A. Gray Native DRVE

Wind River draba · Brassicaceae
Dracocephalum parviflorum Nutt. Native DRPA2

American dragonhead · Lamiaceae
Dryas octopetala L. Native DROC

eightpetal mountain-avens · Rosaceae
Dryas octopetala L. ssp. hookeriana (Juz.) Hultén Native DROCH

Hooker's mountain-avens · Rosaceae
Dryopteris expansa (C. Presl) Fraser-Jenkins & Jermy Native DREX2

spreading woodfern · Dryopteridaceae
Dyssodia papposa (Vent.) Hitchc. Native DYPA

fetid marigold · Asteraceae
Echinochloa crus-galli (L.) P. Beauv. Introduced ECCR

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

rough barnyardgrass · Poaceae
Echinochloa muricata (P. Beauv.) Fernald var. microstachya Wiegand Native ECMUM

rough barnyardgrass · Poaceae
Elaeagnus angustifolia L. Introduced ELAN

Russian olive · Elaeagnaceae
Elaeagnus commutata Bernh. ex Rydb. Native ELCO

silverberry · Elaeagnaceae
Eleocharis palustris (L.) Roem. & Schult. Native ELPA3

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

common spikerush · Cyperaceae
Eleocharis quinqueflora (Hartmann) O. Schwarz Native ELQU2

fewflower spikerush · Cyperaceae
Eleocharis rostellata (Torr.) Torr. Native ELRO2

beaked spikerush · Cyperaceae
Ellisia nyctelea (L.) L. Native ELNY

Aunt Lucy · Hydrophyllaceae
Elymus alaskanus (Scribn. & Merr.) Á. Löve Native ELAL5

Alaskan wheatgrass · Poaceae
Elymus alaskanus (Scribn. & Merr.) Á. Löve ssp. latiglumis (Scribn. & J.G. Sm.) Á. Löve Native ELALL

Alaskan wheatgrass · Poaceae
Elymus canadensis L. Native ELCA4

Canada wildrye · Poaceae
Elymus elymoides (Raf.) Swezey Native ELEL5

squirreltail · Poaceae
Elymus glaucus Buckley Native ELGL

blue wildrye · Poaceae
Elymus lanceolatus (Scribn. & J.G. Sm.) Gould Native ELLA3

thickspike wheatgrass · Poaceae
Elymus lanceolatus (Scribn. & J.G. Sm.) Gould ssp. lanceolatus Native ELLAL

thickspike wheatgrass · Poaceae
Elymus repens (L.) Gould Introduced ELRE4

quackgrass · Poaceae
Elymus scribneri (Vasey) M.E. Jones Native ELSC4

spreading wheatgrass · Poaceae
Elymus trachycaulus (Link) Gould ex Shinners Native ELTR7

slender wheatgrass · Poaceae
Elymus ×saundersii Vasey (pro sp.) [elymoides × trachycaulus] Native ELSA4

Poaceae
Endolepis dioica (Nutt.) Standl. Native ENDI

Suckley's endolepis · Chenopodiaceae
Epilobium anagallidifolium Lam. Native EPAN4

pimpernel willowherb · Onagraceae
Epilobium brachycarpum C. Presl Native EPBR3

tall annual willowherb · Onagraceae
Epilobium canum (Greene) P.H. Raven Native EPCA3

hummingbird trumpet · Onagraceae
Epilobium canum (Greene) P.H. Raven ssp. garrettii (A. Nelson) P.H. Raven Native EPCAG

Garrett's firechalice · Onagraceae
Epilobium ciliatum Raf. Native EPCI

fringed willowherb · Onagraceae
Epilobium ciliatum Raf. ssp. ciliatum Native EPCIC

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

fringed willowherb · Onagraceae
Epilobium clavatum Trel. Native EPCL

talus willowherb · Onagraceae
Epilobium glaberrimum Barbey Native EPGL

glaucus willowherb · Onagraceae
Epilobium glaberrimum Barbey ssp. fastigiatum (Nutt.) Hoch & P.H. Raven Native EPGLF

glaucus willowherb · Onagraceae
Epilobium halleanum Hausskn. Native EPHA

glandular willowherb · Onagraceae
Epilobium hornemannii Rchb. Native EPHO

Hornemann's willowherb · Onagraceae
Epilobium hornemannii Rchb. ssp. hornemannii Native EPHOH

Hornemann's willowherb · Onagraceae
Epilobium lactiflorum Hausskn. Native EPLA3

milkflower willowherb · Onagraceae
Epilobium saximontanum Hausskn. Native EPSA

Rocky Mountain willowherb · Onagraceae
Epilobium suffruticosum Nutt. Native EPSU

shrubby willowherb · Onagraceae
Epipactis gigantea Douglas ex Hook. Native EPGI

stream orchid · Orchidaceae
Equisetum arvense L. Native EQAR

field horsetail · Equisetaceae
Equisetum hyemale L. Native EQHY

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

scouringrush horsetail · Equisetaceae
Equisetum laevigatum A. Braun Native EQLA

smooth horsetail · Equisetaceae
Equisetum variegatum Schleich. ex F. Weber & D. Mohr Native EQVA

variegated scouringrush · Equisetaceae
Equisetum variegatum Schleich. ex F. Weber & D. Mohr var. variegatum Native EQVAV

variegated scouringrush · Equisetaceae
Equisetum ×ferrissii Clute (pro sp.) [hyemale × laevigatum] Native EQFE

Equisetaceae
Eragrostis cilianensis (All.) Vign. ex Janchen Introduced ERCI

stinkgrass · Poaceae
Eragrostis pectinacea (Michx.) Nees ex Steud. Native ERPE

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

tufted lovegrass · Poaceae
Eremopyrum triticeum (Gaertn.) Nevski Introduced ERTR13

annual wheatgrass · Poaceae
Ericameria nauseosa (Pall. ex Pursh) G.L. Nesom & Baird Native ERNA10

rubber rabbitbrush · Asteraceae
Ericameria nauseosa (Pall. ex Pursh) G.L. Nesom & Baird ssp. consimilis (Greene) G.L. Nesom & Baird Native ERNAC2

rubber rabbitbrush · Asteraceae
Ericameria nauseosa (Pall. ex Pursh) G.L. Nesom & Baird ssp. consimilis (Greene) G.L. Nesom & Baird var. oreophila (A. Nelson) G.L. Nesom & Baird Native ERNAO

rubber rabbitbrush · Asteraceae
Ericameria nauseosa (Pall. ex Pursh) G.L. Nesom & Baird ssp. nauseosa Native ERNAN3

rubber rabbitbrush · Asteraceae
Ericameria nauseosa (Pall. ex Pursh) G.L. Nesom & Baird ssp. nauseosa var. glabrata (A. Gray) G.L. Nesom & Baird Native ERNAG

rubber rabbitbrush · Asteraceae
Ericameria nauseosa (Pall. ex Pursh) G.L. Nesom & Baird ssp. nauseosa var. nauseosa Native ERNAN5

rubber rabbitbrush · Asteraceae
Ericameria suffruticosa (Nutt.) G.L. Nesom Native ERSU13

singlehead goldenbush · Asteraceae
Erigeron acris L. Native ERAC2

bitter fleabane · Asteraceae
Erigeron acris L. ssp. debilis (A. Gray) Piper Native ERACD2

bitter fleabane · Asteraceae
Erigeron acris L. ssp. politus (Fr.) Schinz & R. Keller Native ERACP2

bitter fleabane · Asteraceae
Erigeron caespitosus Nutt. Native ERCA2

tufted fleabane · Asteraceae
Erigeron compositus Pursh Native ERCO4

cutleaf daisy · Asteraceae
Erigeron corymbosus Nutt. Native ERCO5

longleaf fleabane · Asteraceae
Erigeron divergens Torr. & A. Gray Native ERDI4

spreading fleabane · Asteraceae
Erigeron eatonii A. Gray Native EREA

Eaton's fleabane · Asteraceae
Erigeron eatonii A. Gray var. eatonii Native EREAE

Eaton's fleabane · Asteraceae
Erigeron engelmannii A. Nelson Native EREN

Engelmann's fleabane · Asteraceae
Erigeron engelmannii A. Nelson var. engelmannii Native ERENE

Engelmann's fleabane · Asteraceae
Erigeron flabellifolius Rydb. Native ERFL8

fanleaf fleabane · Asteraceae
Erigeron glabellus Nutt. Native ERGL2

streamside fleabane · Asteraceae
Erigeron gracilis Rydb. Native ERGR2

quill fleabane · Asteraceae
Erigeron humilis Graham Native ERHU

arctic alpine fleabane · Asteraceae
Erigeron leiomerus A. Gray Native ERLE6

rockslide yellow fleabane · Asteraceae
Erigeron lonchophyllus Hook. Native ERLO

shortray fleabane · Asteraceae
Erigeron peregrinus (Banks ex Pursh) Greene Native ERPE3

subalpine fleabane · Asteraceae
Erigeron peregrinus (Banks ex Pursh) Greene ssp. callianthemus (Greene) Cronquist Native ERPEC

subalpine fleabane · Asteraceae
Erigeron peregrinus (Banks ex Pursh) Greene ssp. callianthemus (Greene) Cronquist var. callianthemus Native ERPEC2

subalpine fleabane · Asteraceae
Erigeron pumilus Nutt. Native ERPU2

shaggy fleabane · Asteraceae
Erigeron pumilus Nutt. ssp. pumilus Native ERPUP3

shaggy fleabane · Asteraceae
Erigeron rydbergii Cronquist Native ERRY

Rydberg's fleabane · Asteraceae
Erigeron simplex Greene Native ERSI3

onestem fleabane · Asteraceae
Erigeron speciosus (Lindl.) DC. Native ERSP4

aspen fleabane · Asteraceae
Erigeron speciosus (Lindl.) DC. var. macranthus (Nutt.) Cronquist Native ERSPM

aspen fleabane · Asteraceae
Erigeron strigosus Muhl. ex Willd. Native ERST3

prairie fleabane · Asteraceae
Erigeron subtrinervis Rydb. ex Porter & Britton Native ERSU2

threenerve fleabane · Asteraceae
Erigeron subtrinervis Rydb. ex Porter & Britton var. conspicuus (Rydb.) Cronquist Native ERSUC

threenerve fleabane · Asteraceae
Erigeron tweedyi Canby Native ERTW

Tweedy's fleabane · Asteraceae
Erigeron ursinus D.C. Eaton Native ERUR2

Bear River fleabane · Asteraceae
Eriogonum brevicaule Nutt. Native ERBR5

shortstem buckwheat · Polygonaceae
Eriogonum brevicaule Nutt. var. brevicaule Native ERBRB4

shortstem buckwheat · Polygonaceae
Eriogonum cernuum Nutt. Native ERCE2

nodding buckwheat · Polygonaceae
Eriogonum cernuum Nutt. var. cernuum Native ERCEC

nodding buckwheat · Polygonaceae
Eriogonum flavum Nutt. Native ERFL4

alpine golden buckwheat · Polygonaceae
Eriogonum flavum Nutt. var. flavum Native ERFLF

alpine golden buckwheat · Polygonaceae
Eriogonum flavum Nutt. var. polyphyllum (Small ex Rydb.) M.E. Jones Native ERFLP2

alpine golden buckwheat · Polygonaceae
Eriogonum lagopus Rydb. Native ERLA9

parasol buckwheat · Polygonaceae
Eriogonum ovalifolium Nutt. Native EROV

cushion buckwheat · Polygonaceae
Eriogonum ovalifolium Nutt. var. ochroleucum (Small ex Rydb.) M. Peck Native EROVO4

cushion buckwheat · Polygonaceae
Eriogonum ovalifolium Nutt. var. ovalifolium Native EROVO5

cushion buckwheat · Polygonaceae
Eriogonum ovalifolium Nutt. var. purpureum (Nutt.) Durand Native EROVP2

cushion buckwheat · Polygonaceae
Eriogonum pauciflorum Pursh Native ERPA9

fewflower buckwheat · Polygonaceae
Eriogonum pauciflorum Pursh var. gnaphalodes (Benth.) Reveal Native ERPAG

fewflower buckwheat · Polygonaceae
Eriogonum strictum Benth. Native ERST4

Blue Mountain buckwheat · Polygonaceae
Eriogonum strictum Benth. ssp. proliferum (Torr. & A. Gray) S. Stokes Native ERSTP

Blue Mountain buckwheat · Polygonaceae
Eriogonum strictum Benth. ssp. proliferum (Torr. & A. Gray) S. Stokes var. proliferum (Torr. & A. Gray) C.L. Hitchc. Native ERSTP3

Blue Mountain buckwheat · Polygonaceae
Eriogonum umbellatum Torr. Native ERUM

sulphur-flower buckwheat · Polygonaceae
Eriogonum umbellatum Torr. var. dichrocephalum Gandog. Native ERUMD3

sulphur-flower buckwheat · Polygonaceae
Eriogonum umbellatum Torr. var. majus Hook. Native ERUMM

sulphur-flower buckwheat · Polygonaceae
Eriophorum angustifolium Honck. Native ERAN6

tall cottongrass · Cyperaceae
Eriophorum angustifolium Honck. ssp. angustifolium Native ERANA3

tall cottongrass · Cyperaceae
Eriophorum callitrix Cham. ex C.A. Mey. Native ERCA13

arctic cottongrass · Cyperaceae
Eriophorum callitrix Cham. ex C.A. Mey. var. callitrix Native ERCAC2

arctic cottongrass · Cyperaceae
Eriophorum chamissonis C.A. Mey. Native ERCH7

Chamisso's cottongrass · Cyperaceae
Eriophorum viridicarinatum (Engelm.) Fernald Native ERVI9

thinleaf cottonsedge · Cyperaceae
Eriophyllum lanatum (Pursh) Forbes Native ERLA6

common woolly sunflower · Asteraceae
Eriophyllum lanatum (Pursh) Forbes var. integrifolium (Hook.) Smiley Native ERLAI

common woolly sunflower · Asteraceae
Eritrichium howardii (A. Gray) Rydb. Native ERHO8

Howard's alpine forget-me-not · Boraginaceae
Eritrichium nanum (Vill.) Schrad. ex Gaudin Native ERNA

arctic alpine forget-me-not · Boraginaceae
Eritrichium nanum (Vill.) Schrad. ex Gaudin var. elongatum (Rydb.) Cronquist Native ERNAE

arctic alpine forget-me-not · Boraginaceae
Erodium cicutarium (L.) L'Hér. ex Aiton Introduced ERCI6

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

redstem stork's bill · Geraniaceae
Erysimum capitatum (Douglas ex Hook.) Greene Native ERCA14

sanddune wallflower · Brassicaceae
Erysimum capitatum (Douglas ex Hook.) Greene var. capitatum Native ERCAC

sanddune wallflower · Brassicaceae
Erysimum capitatum (Douglas ex Hook.) Greene var. purshii (Durand) Rollins Native ERCAP3

Pursh's wallflower · Brassicaceae
Erysimum cheiranthoides L. Introduced ERCH9

wormseed wallflower · Brassicaceae
Erysimum inconspicuum (S. Watson) MacMill. Native ERIN7

shy wallflower · Brassicaceae
Erysimum inconspicuum (S. Watson) MacMill. var. inconspicuum Native ERINI6

shy wallflower · Brassicaceae
Erysimum repandum L. Introduced ERRE4

spreading wallflower · Brassicaceae
Erythronium grandiflorum Pursh Native ERGR9

yellow avalanche-lily · Liliaceae
Erythronium grandiflorum Pursh ssp. grandiflorum Native ERGRG3

yellow avalanche-lily · Liliaceae
Escobaria missouriensis (Sweet) D.R. Hunt Native ESMI3

Missouri foxtail cactus · Cactaceae
Eucephalus elegans Nutt. Native EUEL2

elegant aster · Asteraceae
Eucephalus engelmannii (D.C. Eaton) Greene Native EUEN

Engelmann's aster · Asteraceae
Euphorbia brachycera Engelm. Native EUBR

horned spurge · Euphorbiaceae
Euphorbia esula L. Introduced EUES

leafy spurge · Euphorbiaceae
Euphorbia esula L. var. esula Introduced EUESE

leafy spurge · Euphorbiaceae
Euphorbia esula L. var. uralensis (Fisch. ex Link) Dorn Introduced EUESU

Russian leafy spurge · Euphorbiaceae
Euphorbia helioscopia L. Introduced EUHE2

madwoman's milk · Euphorbiaceae
Euphorbia marginata Pursh Native EUMA8

snow on the mountain · Euphorbiaceae
Eurybia conspicua (Lindl.) G.L. Nesom Native EUCO36

western showy aster · Asteraceae
Eurybia glauca (Nutt.) G.L. Nesom Native EUGL19

gray aster · Asteraceae
Eurybia glauca (Nutt.) G.L. Nesom var. glauca Native EUGLG2

gray aster · Asteraceae
Eurybia integrifolia (Nutt.) G.L. Nesom Native EUIN9

thickstem aster · Asteraceae
Eurybia merita (A. Nelson) G.L. Nesom Native EUME17

subalpine aster · Asteraceae
Festuca baffinensis Polunin Native FEBA

Baffin fescue · Poaceae
Festuca brachyphylla Schult. ex Schult. & Schult. f. Native FEBR

alpine fescue · Poaceae
Festuca hallii (Vasey) Piper Native FEHA3

plains rough fescue · Poaceae
Festuca idahoensis Elmer Native FEID

Idaho fescue · Poaceae
Festuca idahoensis Elmer ssp. idahoensis Native FEIDI2

Idaho fescue · Poaceae
Festuca rubra L. Both FERU2

red fescue · Poaceae
Festuca rubra L. ssp. arenaria (Osbeck) F. Aresch. Native FERUA3

red fescue · Poaceae
Festuca saximontana Rydb. Native FESA

Rocky Mountain fescue · Poaceae
Festuca saximontana Rydb. var. saximontana Native FESAS

Rocky Mountain fescue · Poaceae
Floerkea proserpinacoides Willd. Native FLPR

false mermaidweed · Limnanthaceae
Fragaria vesca L. Native FRVE

woodland strawberry · Rosaceae
Fragaria vesca L. ssp. bracteata (A. Heller) Staudt Native FRVEB2

woodland strawberry · Rosaceae
Fragaria virginiana Duchesne Native FRVI

Virginia strawberry · Rosaceae
Fragaria virginiana Duchesne ssp. glauca (S. Watson) Staudt Native FRVIG2

Virginia strawberry · Rosaceae
Frasera speciosa Douglas ex Griseb. Native FRSP

elkweed · Gentianaceae
Fraxinus pennsylvanica Marshall Native FRPE

green ash · Oleaceae
Fritillaria atropurpurea Nutt. Native FRAT

spotted fritillary · Liliaceae
Fritillaria pudica (Pursh) Spreng. Native FRPU2

yellow fritillary · Liliaceae
Gaillardia aristata Pursh Native GAAR

blanketflower · Asteraceae
Galium aparine L. Native GAAP2

stickywilly · Rubiaceae
Galium bifolium S. Watson Native GABI

twinleaf bedstraw · Rubiaceae
Galium boreale L. Native GABO2

northern bedstraw · Rubiaceae
Galium trifidum L. Native GATR2

threepetal bedstraw · Rubiaceae
Galium trifidum L. ssp. trifidum Native GATRT5

threepetal bedstraw · Rubiaceae
Galium triflorum Michx. Native GATR3

fragrant bedstraw · Rubiaceae
Galium verum L. Introduced GAVE

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

Yellow Spring bedstraw · Rubiaceae
Gaultheria humifusa (Graham) Rydb. Native GAHU

alpine spicywintergreen · Ericaceae
Gayophytum diffusum Torr. & A. Gray Native GADI2

spreading groundsmoke · Onagraceae
Gayophytum diffusum Torr. & A. Gray ssp. parviflorum F.H. Lewis & Szweykowski Native GADIP

spreading groundsmoke · Onagraceae
Gayophytum humile Juss. Native GAHU2

dwarf groundsmoke · Onagraceae
Gayophytum racemosum Torr. & A. Gray Native GARA

blackfoot groundsmoke · Onagraceae
Gayophytum ramosissimum Torr. & A. Gray Native GARA2

pinyon groundsmoke · Onagraceae
Gentiana affinis Griseb. Native GEAF

pleated gentian · Gentianaceae
Gentiana algida Pall. Native GEAL2

whitish gentian · Gentianaceae
Gentiana calycosa Griseb. Native GECA

Rainier pleated gentian · Gentianaceae
Gentiana prostrata Haenke Native GEPR3

pygmy gentian · Gentianaceae
Gentianella amarella (L.) Börner Native GEAM3

autumn dwarf gentian · Gentianaceae
Gentianella amarella (L.) Börner ssp. acuta (Michx.) J.M. Gillett Native GEAMA

autumn dwarf gentian · Gentianaceae
Gentianella propinqua (Richardson) J.M. Gillett Native GEPR5

fourpart dwarf gentian · Gentianaceae
Gentianella propinqua (Richardson) J.M. Gillett ssp. propinqua Native GEPRP

fourpart dwarf gentian · Gentianaceae
Gentianella tenella (Rottb.) Börner Native GETE4

Dane's dwarf gentian · Gentianaceae
Gentianella tenella (Rottb.) Börner ssp. tenella Native GETET

Dane's dwarf gentian · Gentianaceae
Gentianopsis barbellata (Engelm.) Iltis Native GEBA2

perennial fringed gentian · Gentianaceae
Gentianopsis thermalis (Kuntze) Iltis Native GETH

Rocky Mountain fringed gentian · Gentianaceae
Geranium bicknellii Britton Native GEBI2

Bicknell's cranesbill · Geraniaceae
Geranium pusillum L. Introduced GEPU2

small geranium · Geraniaceae
Geranium richardsonii Fisch. & Trautv. Native GERI

Richardson's geranium · Geraniaceae
Geranium viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. Native GEVI2

sticky purple geranium · Geraniaceae
Geranium viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. var. incisum (Torr. & A. Gray) N.H. Holmgren Native GEVII

sticky purple geranium · Geraniaceae
Geranium viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. var. viscosissimum Native GEVIV

sticky purple geranium · Geraniaceae
Geum aleppicum Jacq. Native GEAL3

yellow avens · Rosaceae
Geum macrophyllum Willd. Native GEMA4

largeleaf avens · Rosaceae
Geum macrophyllum Willd. var. perincisum (Rydb.) Raup Native GEMAP

largeleaf avens · Rosaceae
Geum rossii (R. Br.) Ser. Native GERO2

Ross' avens · Rosaceae
Geum rossii (R. Br.) Ser. var. turbinatum (Rydb.) C.L. Hitchc. Native GEROT

Ross' avens · Rosaceae
Geum triflorum Pursh Native GETR

old man's whiskers · Rosaceae
Geum triflorum Pursh var. ciliatum (Pursh) Fassett Native GETRC2

old man's whiskers · Rosaceae
Geum triflorum Pursh var. triflorum Native GETRT

old man's whiskers · Rosaceae
Gilia tweedyi Rydb. Native GITW

Tweedy's gila · Polemoniaceae
Glechoma hederacea L. Introduced GLHE2

ground ivy · Lamiaceae
Glyceria borealis (Nash) Batchelder Native GLBO

small floating mannagrass · Poaceae
Glyceria grandis S. Watson Native GLGR

American mannagrass · Poaceae
Glyceria grandis S. Watson var. grandis Native GLGRG

American mannagrass · Poaceae
Glyceria striata (Lam.) Hitchc. Native GLST

fowl mannagrass · Poaceae
Glycyrrhiza lepidota Pursh Native GLLE3

American licorice · Fabaceae
Gnaphalium palustre Nutt. Native GNPA

western marsh cudweed · Asteraceae
Goodyera oblongifolia Raf. Native GOOB2

western rattlesnake plantain · Orchidaceae
Grayia spinosa (Hook.) Moq. Native GRSP

spiny hopsage · Chenopodiaceae
Grindelia squarrosa (Pursh) Dunal Native GRSQ

curlycup gumweed · Asteraceae
Grindelia squarrosa (Pursh) Dunal var. quasiperennis Lunell Native GRSQQ

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

curlycup gumweed · Asteraceae
Gutierrezia sarothrae (Pursh) Britton & Rusby Native GUSA2

broom snakeweed · Asteraceae
Gypsophila paniculata L. Introduced GYPA

baby's breath · Caryophyllaceae
Hackelia floribunda (Lehm.) I.M. Johnst. Native HAFL2

manyflower stickseed · Boraginaceae
Hackelia patens (Nutt.) I.M. Johnst. Native HAPA

spotted stickseed · Boraginaceae
Hackelia patens (Nutt.) I.M. Johnst. var. patens Native HAPAP

spotted stickseed · Boraginaceae
Halimolobos virgata (Nutt.) O.E. Schulz Native HAVI3

rod halimolobos · Brassicaceae
Halogeton glomeratus (M. Bieb.) C.A. Mey. Introduced HAGL

saltlover · Chenopodiaceae
Hedeoma drummondii Benth. Native HEDR

Drummond's false pennyroyal · Lamiaceae
Hedeoma hispida Pursh Native HEHI

rough false pennyroyal · Lamiaceae
Hedysarum alpinum L. Native HEAL

alpine sweetvetch · Fabaceae
Hedysarum boreale Nutt. Native HEBO

Utah sweetvetch · Fabaceae
Hedysarum boreale Nutt. ssp. boreale Native HEBOB

Utah sweetvetch · Fabaceae
Hedysarum boreale Nutt. ssp. boreale var. boreale Native HEBOB2

Utah sweetvetch · Fabaceae
Hedysarum occidentale Greene Native HEOC

western sweetvetch · Fabaceae
Hedysarum occidentale Greene var. occidentale Native HEOCO2

western sweetvetch · Fabaceae
Hedysarum sulphurescens Rydb. Native HESU

white sweetvetch · Fabaceae
Helianthella quinquenervis (Hook.) A. Gray Native HEQU2

fivenerve helianthella · Asteraceae
Helianthella uniflora (Nutt.) Torr. & A. Gray Native HEUN

oneflower helianthella · Asteraceae
Helianthella uniflora (Nutt.) Torr. & A. Gray var. uniflora Native HEUNU

oneflower helianthella · Asteraceae
Helianthus annuus L. Native HEAN3

common sunflower · Asteraceae
Helianthus nuttallii Torr. & A. Gray Native HENU

Nuttall's sunflower · Asteraceae
Helianthus nuttallii Torr. & A. Gray ssp. nuttallii Native HENUN

Nuttall's sunflower · Asteraceae
Helianthus petiolaris Nutt. Native HEPE

prairie sunflower · Asteraceae
Helianthus petiolaris Nutt. ssp. petiolaris Native HEPEP

prairie sunflower · Asteraceae
Heliomeris multiflora Nutt. Native HEMU3

showy goldeneye · Asteraceae
Heliomeris multiflora Nutt. var. multiflora Native HEMUM

showy goldeneye · Asteraceae
Heliotropium curassavicum L. Native HECU3

salt heliotrope · Boraginaceae
Heliotropium curassavicum L. var. obovatum DC. Native HECUO2

seaside heliotrope · Boraginaceae
Heracleum maximum W. Bartram Native HEMA80

common cowparsnip · Apiaceae
Hesperis matronalis L. Introduced HEMA3

dames rocket · Brassicaceae
Hesperostipa comata (Trin. & Rupr.) Barkworth Native HECO26

needle and thread · Poaceae
Hesperostipa comata (Trin. & Rupr.) Barkworth ssp. comata Native HECOC8

needle and thread · Poaceae
Hesperostipa comata (Trin. & Rupr.) Barkworth ssp. intermedia (Scribn. & Tweedy) Barkworth Native HECOI

intermediate needle and thread · Poaceae
Heterotheca villosa (Pursh) Shinners Native HEVI4

hairy false goldenaster · Asteraceae
Heterotheca villosa (Pursh) Shinners var. nana (A. Gray) Semple Native HEVIN

hairy false goldenaster · Asteraceae
Heterotheca villosa (Pursh) Shinners var. villosa Native HEVIV

hairy false goldenaster · Asteraceae
Heuchera cylindrica Douglas ex Hook. Native HECY2

roundleaf alumroot · Saxifragaceae
Heuchera cylindrica Douglas ex Hook. var. cylindrica Native HECYC

roundleaf alumroot · Saxifragaceae
Heuchera parvifolia Nutt. ex Torr. & A. Gray Native HEPA11

littleleaf alumroot · Saxifragaceae
Heuchera parvifolia Nutt. ex Torr. & A. Gray var. utahensis (Rydb.) Garrett Native HEPAU

Utah alumroot · Saxifragaceae
Hieracium albiflorum Hook. Native HIAL2

white hawkweed · Asteraceae
Hieracium cynoglossoides Arv.-Touv. Native HICY

houndstongue hawkweed · Asteraceae
Hieracium gracile Hook. Native HIGR

slender hawkweed · Asteraceae
Hieracium gracile Hook. var. gracile Native HIGRG

slender hawkweed · Asteraceae
Hieracium umbellatum L. Native HIUM

narrowleaf hawkweed · Asteraceae
Hierochloe hirta (Schrank) Borbás Native HIHI

northern sweetgrass · Poaceae
Hierochloe hirta (Schrank) Borbás ssp. arctica (J. Presl) G. Weim. Native HIHIA

northern sweetgrass · Poaceae
Hippuris vulgaris L. Native HIVU2

common mare's-tail · Hippuridaceae
Hordeum brachyantherum Nevski Native HOBR2

meadow barley · Poaceae
Hordeum brachyantherum Nevski ssp. brachyantherum Native HOBRB2

meadow barley · Poaceae
Hordeum jubatum L. Native HOJU

foxtail barley · Poaceae
Hordeum jubatum L. ssp. intermedium Bowden Native HOJUI

intermediate barley · Poaceae
Hordeum jubatum L. ssp. jubatum Native HOJUJ

foxtail barley · Poaceae
Hordeum vulgare L. Introduced HOVU

common barley · Poaceae
Hulsea algida A. Gray Native HUAL

Pacific hulsea · Asteraceae
Humulus lupulus L. Both HULU

common hop · Cannabaceae
Humulus lupulus L. var. neomexicanus A. Nelson & Cockerell Native HULUN

common hop · Cannabaceae
Hydrophyllum capitatum Douglas ex Benth. Native HYCA4

ballhead waterleaf · Hydrophyllaceae
Hydrophyllum capitatum Douglas ex Benth. var. capitatum Native HYCAC

ballhead waterleaf · Hydrophyllaceae
Hymenopappus filifolius Hook. Native HYFI

fineleaf hymenopappus · Asteraceae
Hymenopappus filifolius Hook. var. polycephalus (Osterh.) B.L. Turner Native HYFIP3

manyhead hymenopappus · Asteraceae
Hymenoxys richardsonii (Hook.) Cockerell Native HYRI

pingue rubberweed · Asteraceae
Hymenoxys richardsonii (Hook.) Cockerell var. richardsonii Native HYRIR

pingue rubberweed · Asteraceae
Hyoscyamus niger L. Introduced HYNI

black henbane · Solanaceae
Hypericum perforatum L. Introduced HYPE

common St. Johnswort · Clusiaceae
Hypericum scouleri Hook. Native HYSC5

Scouler's St. Johnswort · Clusiaceae
Iliamna rivularis (Douglas ex Hook.) Greene Native ILRI

streambank wild hollyhock · Malvaceae
Ionactis alpina (Nutt.) Greene Native IOAL

Lava aster · Asteraceae
Ipomopsis congesta (Hook.) V.E. Grant Native IPCO5

ballhead ipomopsis · Polemoniaceae
Ipomopsis congesta (Hook.) V.E. Grant ssp. congesta Native IPCOC3

ballhead ipomopsis · Polemoniaceae
Ipomopsis pumila (Nutt.) V.E. Grant Native IPPU4

dwarf ipomopsis · Polemoniaceae
Ipomopsis spicata (Nutt.) V.E. Grant Native IPSP

spiked ipomopsis · Polemoniaceae
Ipomopsis spicata (Nutt.) V.E. Grant ssp. orchidacea (Brand) Wilken & R.L. Hartm. Native IPSPO2

orchid ipomopsis · Polemoniaceae
Ipomopsis spicata (Nutt.) V.E. Grant ssp. orchidacea (Brand) Wilken & R.L. Hartm. var. cephaloidea (Rydb.) Wilken & R.L. Hartm. Native IPSPC2

orchid ipomopsis · Polemoniaceae
Ipomopsis spicata (Nutt.) V.E. Grant ssp. orchidacea (Brand) Wilken & R.L. Hartm. var. orchidacea (Brand) Dorn Native IPSPO3

orchid ipomopsis · Polemoniaceae
Ipomopsis spicata (Nutt.) V.E. Grant ssp. robruthii Wilken & R.L. Hartm. Native IPSPR3

spiked ipomopsis · Polemoniaceae
Ipomopsis spicata (Nutt.) V.E. Grant ssp. spicata Native IPSPS

spiked ipomopsis · Polemoniaceae
Iris missouriensis Nutt. Native IRMI

Rocky Mountain iris · Iridaceae
Isatis tinctoria L. Introduced ISTI

Dyer's woad · Brassicaceae
Isoetes bolanderi Engelm. Native ISBO

Bolander's quillwort · Isoetaceae
Iva axillaris Pursh Native IVAX

povertyweed · Asteraceae
Ivesia gordonii (Hook.) Torr. & A. Gray Native IVGO

Gordon's ivesia · Rosaceae
Juncus albescens (Lange) Fernald Native JUAL2

northern white rush · Juncaceae
Juncus ambiguus Guss. Native JUAM3

seasice rush · Juncaceae
Juncus arcticus Willd. Both JUAR2

arctic rush · Juncaceae
Juncus arcticus Willd. ssp. littoralis (Engelm.) Hultén Native JUARL

mountain rush · Juncaceae
Juncus biglumis L. Native JUBI2

twoflowered rush · Juncaceae
Juncus bufonius L. Native JUBU

toad rush · Juncaceae
Juncus bufonius L. var. bufonius Native JUBUB

toad rush · Juncaceae
Juncus castaneus Sm. Native JUCA6

chestnut rush · Juncaceae
Juncus castaneus Sm. ssp. castaneus Native JUCAC2

chestnut rush · Juncaceae
Juncus castaneus Sm. ssp. castaneus var. castaneus Native JUCAC6

chestnut rush · Juncaceae
Juncus confusus Coville Native JUCO2

Colorado rush · Juncaceae
Juncus drummondii E. Mey. Native JUDR

Drummond's rush · Juncaceae
Juncus drummondii E. Mey. var. drummondii Native JUDRD

Drummond's rush · Juncaceae
Juncus drummondii E. Mey. var. subtriflorus (E. Mey.) C.L. Hitchc. Native JUDRS

threeflower rush · Juncaceae
Juncus dudleyi Wiegand Native JUDU2

Dudley's rush · Juncaceae
Juncus ensifolius Wikstr. Native JUEN

swordleaf rush · Juncaceae
Juncus hallii Engelm. Native JUHA

Hall's rush · Juncaceae
Juncus interior Wiegand Native JUIN2

inland rush · Juncaceae
Juncus interior Wiegand var. interior Native JUINI

inland rush · Juncaceae
Juncus longistylis Torr. Native JULO

longstyle rush · Juncaceae
Juncus longistylis Torr. var. longistylis Native JULOL

longstyle rush · Juncaceae
Juncus mertensianus Bong. Native JUME3

Mertens' rush · Juncaceae
Juncus nodosus L. Native JUNO2

knotted rush · Juncaceae
Juncus nodosus L. var. nodosus Native JUNON

knotted rush · Juncaceae
Juncus parryi Engelm. Native JUPA

Parry's rush · Juncaceae
Juncus regelii Buchenau Native JURE

Regel's rush · Juncaceae
Juncus saximontanus A. Nelson Native JUSA

Rocky Mountain rush · Juncaceae
Juncus torreyi Coville Native JUTO

Torrey's rush · Juncaceae
Juncus tracyi Rydb. Native JUTR

Tracy's rush · Juncaceae
Juniperus communis L. Native JUCO6

common juniper · Cupressaceae
Juniperus communis L. var. depressa Pursh Native JUCOD

common juniper · Cupressaceae
Juniperus horizontalis Moench Native JUHO2

creeping juniper · Cupressaceae
Juniperus scopulorum Sarg. Native JUSC2

Rocky Mountain juniper · Cupressaceae
Kalmia microphylla (Hook.) A. Heller Native KAMI

alpine laurel · Ericaceae
Kalmia polifolia Wangenh. Native KAPO

bog laurel · Ericaceae
Kelloggia galioides Torr. Native KEGA

milk kelloggia · Rubiaceae
Kelseya uniflora (S. Watson) Rydb. Native KEUN

oneflower kelseya · Rosaceae
Knautia arvensis (L.) J.M. Coult. Introduced KNAR

field scabiosa · Dipsacaceae
Kobresia myosuroides (Vill.) Fiori Native KOMY

Bellardi bog sedge · Cyperaceae
Kobresia sibirica (Turcz. ex Ledeb.) Boeckeler Native KOSI

Siberian bog sedge · Cyperaceae
Kobresia simpliciuscula (Wahlenb.) Mack. Native KOSI2

simple bog sedge · Cyperaceae
Koeleria macrantha (Ledeb.) Schult. Native KOMA

prairie Junegrass · Poaceae
Koenigia islandica L. Native KOIS

island purslane · Polygonaceae
Krascheninnikovia lanata (Pursh) A. Meeuse & Smit Native KRLA2

winterfat · Chenopodiaceae
Lactuca biennis (Moench) Fernald Native LABI

tall blue lettuce · Asteraceae
Lactuca canadensis L. Native LACA

Canada lettuce · Asteraceae
Lactuca serriola L. Introduced LASE

prickly lettuce · Asteraceae
Lactuca tatarica (L.) C.A. Mey. Native LATA

blue lettuce · Asteraceae
Lactuca tatarica (L.) C.A. Mey. var. pulchella (Pursh) Breitung Native LATAP

blue lettuce · Asteraceae
Lamium amplexicaule L. Introduced LAAM

henbit deadnettle · Lamiaceae
Lappula cenchrusoides A. Nelson Native LACE

Great Plains stickseed · Boraginaceae
Lappula occidentalis (S. Watson) Greene Native LAOC3

flatspine stickseed · Boraginaceae
Lappula occidentalis (S. Watson) Greene var. cupulata (A. Gray) Higgins Native LAOCC

flatspine stickseed · Boraginaceae
Lappula occidentalis (S. Watson) Greene var. occidentalis Native LAOCO

flatspine stickseed · Boraginaceae
Lappula squarrosa (Retz.) Dumort. Introduced LASQ

European stickseed · Boraginaceae
Lathrocasis tenerrima (A. Gray) L.A. Johnson Native LATE6

delicate gilia · Polemoniaceae
Ledum glandulosum Nutt. Native LEGL

western Labrador tea · Ericaceae
Lemna minor L. Native LEMI3

common duckweed · Lemnaceae
Lemna trisulca L. Native LETR

star duckweed · Lemnaceae
Lepidium campestre (L.) W.T. Aiton Introduced LECA5

field pepperweed · Brassicaceae
Lepidium densiflorum Schrad. Both LEDE

common pepperweed · Brassicaceae
Lepidium latifolium L. Introduced LELA2

broadleaved pepperweed · Brassicaceae
Lepidium perfoliatum L. Introduced LEPE2

clasping pepperweed · Brassicaceae
Lepidium ramosissimum A. Nelson Native LERA2

manybranched pepperweed · Brassicaceae
Lepidium virginicum L. Native LEVI3

Virginia pepperweed · Brassicaceae
Lepidium virginicum L. var. pubescens (Greene) Thell. Native LEVIP

hairy pepperweed · Brassicaceae
Leptosiphon septentrionalis (H. Mason) J.M. Porter & L.A. Johnson Native LESE17

northern linanthus · Polemoniaceae
Lesquerella alpina (Nutt.) S. Watson Native LEAL

alpine bladderpod · Brassicaceae
Lesquerella alpina (Nutt.) S. Watson var. alpina Native LEALA5

alpine bladderpod · Brassicaceae
Lesquerella ludoviciana (Nutt.) S. Watson Native LELU

foothill bladderpod · Brassicaceae
Leucanthemum vulgare Lam. Introduced LEVU

oxeye daisy · Asteraceae
Leucocrinum montanum Nutt. ex A. Gray Native LEMO4

common starlily · Liliaceae
Leucopoa kingii (S. Watson) W.A. Weber Native LEKI2

spike fescue · Poaceae
Lewisia pygmaea (A. Gray) B.L. Rob. Native LEPY2

alpine lewisia · Portulacaceae
Lewisia rediviva Pursh Native LERE7

bitter root · Portulacaceae
Lewisia rediviva Pursh var. rediviva Native LERER

bitter root · Portulacaceae
Leymus cinereus (Scribn. & Merr.) Á. Löve Native LECI4

basin wildrye · Poaceae
Leymus multicaulis (Kar. & Kir.) Tzvelev Introduced LEMU11

manystem wildrye · Poaceae
Liatris punctata Hook. Native LIPU

dotted blazing star · Asteraceae
Liatris punctata Hook. var. punctata Native LIPUP

dotted blazing star · Asteraceae
Ligusticum canbyi (J.M. Coult. & Rose) J.M. Coult. & Rose Native LICA2

Canby's licorice-root · Apiaceae
Ligusticum filicinum S. Watson Native LIFI

fernleaf licorice-root · Apiaceae
Limosella aquatica L. Native LIAQ

water mudwort · Scrophulariaceae
Linanthus pungens (Torr.) J.M. Porter & L.A. Johnson Native LIPU11

granite prickly phlox · Polemoniaceae
Linaria dalmatica (L.) Mill. Introduced LIDA

Dalmatian toadflax · Scrophulariaceae
Linaria dalmatica (L.) Mill. ssp. dalmatica Introduced LIDAD

Dalmatian toadflax · Scrophulariaceae
Linaria vulgaris Mill. Introduced LIVU2

butter and eggs · Scrophulariaceae
Linnaea borealis L. Native LIBO3

twinflower · Caprifoliaceae
Linnaea borealis L. ssp. americana (Forbes) Hultén ex R.T. Clausen Native LIBOA

twinflower · Caprifoliaceae
Linum lewisii Pursh Native LILE3

Lewis flax · Linaceae
Linum lewisii Pursh var. lewisii Native LILEL2

prairie flax · Linaceae
Linum perenne L. Introduced LIPE2

blue flax · Linaceae
Listera borealis Morong Native LIBO4

northern twayblade · Orchidaceae
Listera convallarioides (Sw.) Nutt. ex Elliott Native LICO5

broadlipped twayblade · Orchidaceae
Listera cordata (L.) R. Br. Native LICO6

heartleaf twayblade · Orchidaceae
Listera cordata (L.) R. Br. var. nephrophylla (Rydb.) Hultén Native LICON

heartleaf twayblade · Orchidaceae
Lithophragma glabrum Nutt. Native LIGL2

bulbous woodland-star · Saxifragaceae
Lithophragma parviflorum (Hook.) Nutt. ex Torr. & A. Gray Native LIPA5

smallflower woodland-star · Saxifragaceae
Lithophragma parviflorum (Hook.) Nutt. ex Torr. & A. Gray var. parviflorum Native LIPAP3

smallflower woodland-star · Saxifragaceae
Lithophragma tenellum Nutt. Native LITE4

slender woodland-star · Saxifragaceae
Lithospermum incisum Lehm. Native LIIN2

narrowleaf stoneseed · Boraginaceae
Lithospermum ruderale Douglas ex Lehm. Native LIRU4

western stoneseed · Boraginaceae
Lloydia serotina (L.) Salisb. ex Rchb. Native LLSE

common alplily · Liliaceae
Lloydia serotina (L.) Salisb. ex Rchb. var. serotina Native LLSES2

common alplily · Liliaceae
Lolium perenne L. Introduced LOPE

perennial ryegrass · Poaceae
Lolium perenne L. ssp. multiflorum (Lam.) Husnot Introduced LOPEM2

Italian ryegrass · Poaceae
Lolium persicum Boiss. & Hohen. ex Boiss. Introduced LOPE2

Persian ryegrass · Poaceae
Lomatium ambiguum (Nutt.) J.M. Coult. & Rose Native LOAM

Wyeth biscuitroot · Apiaceae
Lomatium attenuatum Evert Native LOAT

tapertip desertparsley · Apiaceae
Lomatium cous (S. Watson) J.M. Coult. & Rose Native LOCO4

cous biscuitroot · Apiaceae
Lomatium cusickii (S. Watson) J.M. Coult. & Rose Native LOCU

Cusick's biscuitroot · Apiaceae
Lomatium dissectum (Nutt.) Mathias & Constance Native LODI

fernleaf biscuitroot · Apiaceae
Lomatium dissectum (Nutt.) Mathias & Constance var. multifidum Native LODIM

carrotleaf biscuitroot · Apiaceae
Lomatium foeniculaceum (Nutt.) J.M. Coult. & Rose Native LOFO

desert biscuitroot · Apiaceae
Lomatium foeniculaceum (Nutt.) J.M. Coult. & Rose ssp. foeniculaceum Native LOFOF2

desert biscuitroot · Apiaceae
Lomatium macrocarpum (Nutt. ex Torr. & A. Gray) J.M. Coult. & Rose Native LOMA3

bigseed biscuitroot · Apiaceae
Lomatium orientale J.M. Coult. & Rose Native LOOR

Northern Idaho biscuitroot · Apiaceae
Lomatium simplex (Nutt.) J.F. Macbr. Native LOSI2

Great Basin desertparsley · Apiaceae
Lomatium simplex (Nutt.) J.F. Macbr. var. simplex Native LOSIS

Great Basin desertparsley · Apiaceae
Lomatium triternatum (Pursh) J.M. Coult. & Rose Native LOTR2

nineleaf biscuitroot · Apiaceae
Lomatium triternatum (Pursh) J.M. Coult. & Rose var. triternatum Native LOTRT

nineleaf biscuitroot · Apiaceae
Lomatogonium rotatum (L.) Fr. ex Fernald Native LORO

marsh felwort · Gentianaceae
Lonicera involucrata (Richardson) Banks ex Spreng. Native LOIN5

twinberry honeysuckle · Caprifoliaceae
Lonicera involucrata (Richardson) Banks ex Spreng. var. involucrata Native LOINI

twinberry honeysuckle · Caprifoliaceae
Lonicera utahensis S. Watson Native LOUT2

Utah honeysuckle · Caprifoliaceae
Lotus corniculatus L. Introduced LOCO6

bird's-foot trefoil · Fabaceae
Lotus corniculatus L. var. corniculatus Introduced LOCOC5

bird's-foot trefoil · Fabaceae
Lupinus argenteus Pursh Native LUAR3

silvery lupine · Fabaceae
Lupinus argenteus Pursh ssp. argenteus Native LUARA5

silvery lupine · Fabaceae
Lupinus argenteus Pursh ssp. argenteus var. laxiflorus (Douglas ex Lindl.) Dorn Native LUARL5

silvery lupine · Fabaceae
Lupinus argenteus Pursh ssp. rubricaulis (Greene) Hess & D. Dunn Native LUARR

silvery lupine · Fabaceae
Lupinus aridus Douglas Native LUAR7

desert lupine · Fabaceae
Lupinus aridus Douglas ssp. aridus Native LUARA6

desert lupine · Fabaceae
Lupinus caespitosus Nutt. Native LUCA3

stemless dwarf lupine · Fabaceae
Lupinus caespitosus Nutt. var. caespitosus Native LUCAC2

stemless dwarf lupine · Fabaceae
Lupinus depressus Rydb. Native LUDE3

depressed lupine · Fabaceae
Lupinus leucophyllus Douglas ex Lindl. Native LULE3

velvet lupine · Fabaceae
Lupinus leucophyllus Douglas ex Lindl. ssp. leucophyllus Native LULEL4

velvet lupine · Fabaceae
Lupinus pusillus Pursh Native LUPU

rusty lupine · Fabaceae
Lupinus pusillus Pursh ssp. intermontanus (A. Heller) D. Dunn Native LUPUI2

Intermountain lupine · Fabaceae
Lupinus sericeus Pursh Native LUSE4

silky lupine · Fabaceae
Lupinus sericeus Pursh ssp. sericeus Native LUSES2

silky lupine · Fabaceae
Lupinus wyethii S. Watson Native LUWY

Wyeth's lupine · Fabaceae
Lupinus wyethii S. Watson ssp. wyethii Native LUWYW

Wyeth's lupine · Fabaceae
Luzula glabrata (Hoppe ex Rostk.) Desv. Native LUGL2

smooth woodrush · Juncaceae
Luzula glabrata (Hoppe ex Rostk.) Desv. var. hitchcockii (Hämet-Ahti) Dorn Native LUGLH

Hitchcock's smooth woodrush · Juncaceae
Luzula multiflora (Ehrh.) Lej. Native LUMU2

common woodrush · Juncaceae
Luzula multiflora (Ehrh.) Lej. ssp. frigida (Buchenau) Krecz. Native LUMUF

common woodrush · Juncaceae
Luzula parviflora (Ehrh.) Desv. Native LUPA4

smallflowered woodrush · Juncaceae
Luzula spicata (L.) DC. Native LUSP4

spiked woodrush · Juncaceae
Lycium barbarum L. Introduced LYBA4

matrimony vine · Solanaceae
Lycopodium annotinum L. Native LYAN2

stiff clubmoss · Lycopodiaceae
Lygodesmia juncea (Pursh) D. Don ex Hook. Native LYJU

rush skeletonplant · Asteraceae
Lysimachia ciliata L. Native LYCI

fringed loosestrife · Primulaceae
Lythrum salicaria L. Introduced LYSA2

purple loosestrife · Lythraceae
Machaeranthera canescens (Pursh) A. Gray Native MACA2

hoary tansyaster · Asteraceae
Machaeranthera canescens (Pursh) A. Gray ssp. canescens Native MACAC

hoary tansyaster · Asteraceae
Machaeranthera canescens (Pursh) A. Gray ssp. canescens var. canescens Native MACAC3

hoary tansyaster · Asteraceae
Machaeranthera grindelioides (Nutt.) Shinners Native MAGR2

rayless tansyaster · Asteraceae
Machaeranthera grindelioides (Nutt.) Shinners var. grindelioides Native MAGRG

rayless tansyaster · Asteraceae
Machaeranthera tanacetifolia (Kunth) Nees Native MATA2

tanseyleaf tansyaster · Asteraceae
Madia glomerata Hook. Native MAGL2

mountain tarweed · Asteraceae
Mahonia repens (Lindl.) G. Don Native MARE11

creeping barberry · Berberidaceae
Maianthemum racemosum (L.) Link Native MARA7

feathery false lily of the valley · Liliaceae
Maianthemum racemosum (L.) Link ssp. amplexicaule (Nutt.) LaFrankie Native MARAA

feathery false lily of the valley · Liliaceae
Maianthemum stellatum (L.) Link Native MAST4

starry false lily of the valley · Liliaceae
Malacothrix sonchoides (Nutt.) Torr. & A. Gray Native MASO

sowthistle desertdandelion · Asteraceae
Malcolmia africana (L.) W.T. Aiton Introduced MAAF

African mustard · Brassicaceae
Malus pumila Mill. Introduced MAPU

paradise apple · Rosaceae
Malva parviflora L. Introduced MAPA5

cheeseweed mallow · Malvaceae
Malva pusilla Sm. Introduced MAPU5

low mallow · Malvaceae
Malva verticillata L. Introduced MAVE

cluster mallow · Malvaceae
Marrubium vulgare L. Introduced MAVU

horehound · Lamiaceae
Matricaria discoidea DC. Introduced MADI6

disc mayweed · Asteraceae
Medicago lupulina L. Introduced MELU

black medick · Fabaceae
Medicago sativa L. Introduced MESA

alfalfa · Fabaceae
Medicago sativa L. ssp. falcata (L.) Arcang. Introduced MESAF

yellow alfalfa · Fabaceae
Medicago sativa L. ssp. sativa Introduced MESAS

alfalfa · Fabaceae
Melica bulbosa Geyer ex Porter & J.M. Coult. Native MEBU

oniongrass · Poaceae
Melica spectabilis Scribn. Native MESP

purple oniongrass · Poaceae
Melilotus officinalis (L.) Lam. Introduced MEOF

sweetclover · Fabaceae
Mentha arvensis L. Native MEAR4

wild mint · Lamiaceae
Mentha spicata L. Introduced MESP3

spearmint · Lamiaceae
Mentzelia albicaulis (Hook.) Torr. & A. Gray Native MEAL6

whitestem blazingstar · Loasaceae
Mentzelia decapetala (Pursh ex Sims) Urb. & Gilg ex Gilg Native MEDE2

tenpetal blazingstar · Loasaceae
Mentzelia dispersa S. Watson Native MEDI

bushy blazingstar · Loasaceae
Mentzelia laevicaulis (Hook.) Torr. & A. Gray Native MELA2

smoothstem blazingstar · Loasaceae
Mentzelia laevicaulis (Hook.) Torr. & A. Gray var. laevicaulis Native MELAL3

smoothstem blazingstar · Loasaceae
Mentzelia pumila Nutt. ex Torr. & A. Gray Native MEPU3

dwarf mentzelia · Loasaceae
Mentzelia pumila Nutt. ex Torr. & A. Gray var. pumila Native MEPUP

dwarf mentzelia · Loasaceae
Menyanthes trifoliata L. Native METR3

buckbean · Menyanthaceae
Menziesia ferruginea Sm. Native MEFE

rusty menziesia · Ericaceae
Mertensia alpina (Torr.) G. Don Native MEAL7

alpine bluebells · Boraginaceae
Mertensia ciliata (James ex Torr.) G. Don Native MECI3

tall fringed bluebells · Boraginaceae
Mertensia ciliata (James ex Torr.) G. Don var. ciliata Native MECIC2

tall fringed bluebells · Boraginaceae
Mertensia oblongifolia (Nutt.) G. Don Native MEOB

oblongleaf bluebells · Boraginaceae
Microseris nutans (Hook.) Sch. Bip. Native MINU

nodding microseris · Asteraceae
Microsteris gracilis (Hook.) Greene Native MIGR

slender phlox · Polemoniaceae
Microsteris gracilis (Hook.) Greene var. gracilis Native MIGRG4

slender phlox · Polemoniaceae
Microsteris gracilis (Hook.) Greene var. humilior (Hook.) Cronquist Native MIGRH

slender phlox · Polemoniaceae
Mimulus breweri (Greene) Coville Native MIBR5

Brewer's monkeyflower · Scrophulariaceae
Mimulus floribundus Lindl. Native MIFL2

manyflowered monkeyflower · Scrophulariaceae
Mimulus guttatus DC. Native MIGU

seep monkeyflower · Scrophulariaceae
Mimulus lewisii Pursh Native MILE2

purple monkeyflower · Scrophulariaceae
Mimulus moschatus Douglas ex Lindl. Native MIMO3

muskflower · Scrophulariaceae
Mimulus moschatus Douglas ex Lindl. var. moschatus Native MIMOM2

muskflower · Scrophulariaceae
Mimulus suksdorfii A. Gray Native MISU2

Suksdorf's monkeyflower · Scrophulariaceae
Mimulus tilingii Regel Native MITI

Tiling's monkeyflower · Scrophulariaceae
Mimulus tilingii Regel var. tilingii Native MITIT

Tiling's monkeyflower · Scrophulariaceae
Minuartia austromontana S.J. Wolf & Packer Native MIAU3

Columbian stitchwort · Caryophyllaceae
Minuartia nuttallii (Pax) Briq. Native MINU4

Nuttall's sandwort · Caryophyllaceae
Minuartia nuttallii (Pax) Briq. ssp. nuttallii Native MINUN2

Nuttall's sandwort · Caryophyllaceae
Minuartia obtusiloba (Rydb.) House Native MIOB2

twinflower sandwort · Caryophyllaceae
Minuartia rubella (Wahlenb.) Hiern. Native MIRU3

beautiful sandwort · Caryophyllaceae
Mirabilis linearis (Pursh) Heimerl Native MILI3

narrowleaf four o'clock · Nyctaginaceae
Mitella pentandra Hook. Native MIPE

fivestamen miterwort · Saxifragaceae
Mitella stauropetala Piper Native MIST3

smallflower miterwort · Saxifragaceae
Mitella stauropetala Piper var. stenopetala (Piper) Rosend. Native MISTS

drywoods miterwort · Saxifragaceae
Moehringia lateriflora (L.) Fenzl Native MOLA6

bluntleaf sandwort · Caryophyllaceae
Monarda fistulosa L. Native MOFI

wild bergamot · Lamiaceae
Monarda fistulosa L. ssp. fistulosa Native MOFIF

wild bergamot · Lamiaceae
Monarda fistulosa L. ssp. fistulosa var. menthifolia (Graham) Fernald Native MOFIM2

mintleaf bergamot · Lamiaceae
Moneses uniflora (L.) A. Gray Native MOUN2

single delight · Pyrolaceae
Monolepis nuttalliana (Schult.) Greene Native MONU

Nuttall's povertyweed · Chenopodiaceae
Monotropa hypopitys L. Native MOHY3

pinesap · Monotropaceae
Montia chamissoi (Ledeb. ex Spreng.) Greene Native MOCH

water minerslettuce · Portulacaceae
Morus alba L. Introduced MOAL

white mulberry · Moraceae
Muhlenbergia andina (Nutt.) Hitchc. Native MUAN

foxtail muhly · Poaceae
Muhlenbergia asperifolia (Nees & Meyen ex Trin.) Parodi Native MUAS

scratchgrass · Poaceae
Muhlenbergia filiformis (Thurb. ex S. Watson) Rydb. Native MUFI2

pullup muhly · Poaceae
Muhlenbergia glomerata (Willd.) Trin. Native MUGL3

spiked muhly · Poaceae
Muhlenbergia racemosa (Michx.) Britton, Sterns & Poggenb. Native MURA

marsh muhly · Poaceae
Muhlenbergia richardsonis (Trin.) Rydb. Native MURI

mat muhly · Poaceae
Munroa squarrosa (Nutt.) Torr. Native MUSQ3

false buffalograss · Poaceae
Musineon divaricatum (Pursh) Raf. Native MUDI

leafy wildparsley · Apiaceae
Myosotis arvensis (L.) Hill Introduced MYAR

field forget-me-not · Boraginaceae
Myosotis asiatica (Vesterg.) Schischkin & Sergievskaja Native MYAS2

Asian forget-me-not · Boraginaceae
Myosotis stricta Link ex Roem. & Schult. Introduced MYST2

strict forget-me-not · Boraginaceae
Myosurus apetalus C. Gay Native MYAP

bristly mousetail · Ranunculaceae
Myosurus apetalus C. Gay var. borealis Whittemore Native MYAPB

bristly mousetail · Ranunculaceae
Myriophyllum sibiricum Kom. Native MYSI

shortspike watermilfoil · Haloragaceae
Nasturtium officinale W.T. Aiton Introduced NAOF

watercress · Brassicaceae
Nemophila breviflora A. Gray Native NEBR

basin nemophila · Hydrophyllaceae
Nepeta cataria L. Introduced NECA2

catnip · Lamiaceae
Noccaea fendleri (A. Gray) Holub Native NOFE3

Fendler's pennycress · Brassicaceae
Noccaea fendleri (A. Gray) Holub ssp. glauca (A. Nelson) Al-Shehbaz & M. Koch Native NOFEG

alpine pennycress · Brassicaceae
Noccaea parviflora (A. Nelson) Holub Native NOPA5

meadow pennycress · Brassicaceae
Nothocalais cuspidata (Pursh) Greene Native NOCU

prairie false dandelion · Asteraceae
Nothocalais nigrescens (L.F. Hend.) A. Heller Native NONI

speckled false dandelion · Asteraceae
Nuphar lutea (L.) Sm. Native NULU

yellow pond-lily · Nymphaeaceae
Nuphar lutea (L.) Sm. ssp. polysepala (Engelm.) E.O. Beal Native NULUP

Rocky Mountain pond-lily · Nymphaeaceae
Oenothera biennis L. Native OEBI

common evening primrose · Onagraceae
Oenothera caespitosa Nutt. Native OECA10

tufted evening primrose · Onagraceae
Oenothera caespitosa Nutt. ssp. caespitosa Native OECAC2

tufted evening primrose · Onagraceae
Oenothera curtiflora W.L. Wagner & Hoch Native OECU2

velvetweed · Onagraceae
Oenothera flava (A. Nelson) Garrett Native OEFL

yellow evening primrose · Onagraceae
Oenothera flava (A. Nelson) Garrett ssp. flava Native OEFLF

yellow evening primrose · Onagraceae
Oenothera nuttallii Sweet Native OENU

Nuttall's evening primrose · Onagraceae
Oenothera pallida Lindl. Native OEPA

pale evening primrose · Onagraceae
Oenothera pallida Lindl. ssp. trichocalyx (Nutt.) Munz & W. Klein Native OEPAT

pale evening primrose · Onagraceae
Oenothera suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

scarlet beeblossom · Onagraceae
Oenothera villosa Thunb. Native OEVI

hairy evening primrose · Onagraceae
Oenothera villosa Thunb. ssp. strigosa (Rydb.) W. Dietr. & P.H. Raven Native OEVIS

hairy evening primrose · Onagraceae
Oligoneuron rigidum (L.) Small Native OLRI

stiff goldenrod · Asteraceae
Oligoneuron rigidum (L.) Small var. humile (Porter) G.L. Nesom Native OLRIH

stiff goldenrod · Asteraceae
Onobrychis viciifolia Scop. Introduced ONVI

sainfoin · Fabaceae
Onopordum acanthium L. Introduced ONAC

Scotch cottonthistle · Asteraceae
Opuntia polyacantha Haw. Native OPPO

plains pricklypear · Cactaceae
Opuntia polyacantha Haw. var. polyacantha Native OPPOP

hairspine pricklypear · Cactaceae
Oreostemma alpigenum (Torr. & A. Gray) Greene Native ORAL4

tundra aster · Asteraceae
Oreostemma alpigenum (Torr. & A. Gray) Greene var. haydenii (Porter) G.L. Nesom Native ORALH

tundra aster · Asteraceae
Orobanche fasciculata Nutt. Native ORFA

clustered broomrape · Orobanchaceae
Orobanche uniflora L. Native ORUN

oneflowered broomrape · Orobanchaceae
Orthilia secunda (L.) House Native ORSE

sidebells wintergreen · Pyrolaceae
Orthocarpus luteus Nutt. Native ORLU2

yellow owl's-clover · Scrophulariaceae
Oryzopsis asperifolia Michx. Native ORAS

roughleaf ricegrass · Poaceae
Osmorhiza berteroi DC. Native OSBE

sweetcicely · Apiaceae
Osmorhiza depauperata Phil. Native OSDE

bluntseed sweetroot · Apiaceae
Osmorhiza occidentalis (Nutt. ex Torr. & A. Gray) Torr. Native OSOC

western sweetroot · Apiaceae
Oxyria digyna (L.) Hill Native OXDI3

alpine mountainsorrel · Polygonaceae
Oxytropis besseyi (Rydb.) Blank. Native OXBE2

Bessey's locoweed · Fabaceae
Oxytropis besseyi (Rydb.) Blank. var. besseyi Native OXBEB

Bessey's locoweed · Fabaceae
Oxytropis besseyi (Rydb.) Blank. var. ventosa (Greene) Barneby Native OXBEV

Bessey's locoweed · Fabaceae
Oxytropis borealis DC. Native OXBO

boreal locoweed · Fabaceae
Oxytropis borealis DC. var. viscida (Nutt.) S.L. Welsh Native OXBOV

viscid locoweed · Fabaceae
Oxytropis campestris (L.) DC. Native OXCA4

field locoweed · Fabaceae
Oxytropis campestris (L.) DC. var. cusickii (Greenm.) Barneby Native OXCAC3

Cusick's locoweed · Fabaceae
Oxytropis campestris (L.) DC. var. spicata Hook. Native OXCAS3

field locoweed · Fabaceae
Oxytropis deflexa (Pall.) DC. Native OXDE2

nodding locoweed · Fabaceae
Oxytropis deflexa (Pall.) DC. var. sericea Torr. & A. Gray Native OXDES

blue nodding locoweed · Fabaceae
Oxytropis lagopus Nutt. Native OXLA2

haresfoot locoweed · Fabaceae
Oxytropis lagopus Nutt. var. atropurpurea (Rydb.) Barneby Native OXLAA

haresfoot locoweed · Fabaceae
Oxytropis lagopus Nutt. var. lagopus Native OXLAL

haresfoot locoweed · Fabaceae
Oxytropis monticola A. Gray Native OXMO2

yellowflower locoweed · Fabaceae
Oxytropis parryi A. Gray Native OXPA2

Parry's oxytrope · Fabaceae
Oxytropis podocarpa A. Gray Native OXPO

stalkpod locoweed · Fabaceae
Oxytropis sericea Nutt. Native OXSE

white locoweed · Fabaceae
Oxytropis sericea Nutt. var. sericea Native OXSES

white locoweed · Fabaceae
Oxytropis splendens Douglas ex Hook. Native OXSP

showy locoweed · Fabaceae
Packera cana (Hook.) W.A. Weber & Á. Löve Native PACA15

woolly groundsel · Asteraceae
Packera dimorphophylla (Greene) W.A. Weber & Á. Löve Native PADI11

splitleaf groundsel · Asteraceae
Packera dimorphophylla (Greene) W.A. Weber & Á. Löve var. paysonii (T.M. Barkley) D.K. Trock & T.M. Barkley Native PADIP2

Payson's groundsel · Asteraceae
Packera indecora (Greene) Á. Löve & D. Löve Native PAIN11

elegant groundsel · Asteraceae
Packera pauciflora (Pursh) Á. Löve & D. Löve Native PAPA19

alpine groundsel · Asteraceae
Packera paupercula (Michx.) Á. Löve & D. Löve Native PAPA20

balsam groundsel · Asteraceae
Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

prairie groundsel · Asteraceae
Packera streptanthifolia (Greene) W.A. Weber & Á. Löve Native PAST10

Rocky Mountain groundsel · Asteraceae
Packera subnuda (DC.) D.K. Trock & T.M. Barkley Native PASU40

Buek's groundsel · Asteraceae
Packera werneriifolia (A. Gray) W.A. Weber & Á. Löve Native PAWE4

hoary groundsel · Asteraceae
Panicum capillare L. Native PACA6

witchgrass · Poaceae
Papaver radicatum Rottb. Native PARA11

rooted poppy · Papaveraceae
Papaver radicatum Rottb. ssp. kluanense (D. Löve) D.F. Murray Native PARAK

rooted poppy · Papaveraceae
Parietaria pensylvanica Muhl. ex Willd. Native PAPE5

Pennsylvania pellitory · Urticaceae
Parnassia fimbriata K.D. Koenig Native PAFI3

fringed grass of Parnassus · Saxifragaceae
Parnassia fimbriata K.D. Koenig var. fimbriata Native PAFIF

fringed grass of Parnassus · Saxifragaceae
Parnassia kotzebuei Cham. ex Spreng. Native PAKO3

Kotzebue's grass of Parnassus · Saxifragaceae
Parnassia palustris L. Native PAPA8

marsh grass of Parnassus · Saxifragaceae
Parnassia palustris L. var. montanensis (Fernald & Rydb. ex Rydb.) C.L. Hitchc. Native PAPAM2

mountain grass of Parnassus · Saxifragaceae
Parnassia palustris L. var. parviflora (DC.) B. Boivin Native PAPAP2

smallflower grass of Parnassus · Saxifragaceae
Paronychia sessiliflora Nutt. Native PASE

creeping nailwort · Caryophyllaceae
Parrya nudicaulis (L.) Regel Native PANU5

nakedstem wallflower · Brassicaceae
Parthenocissus vitacea (Knerr) Hitchc. Native PAVI5

woodbine · Vitaceae
Pascopyrum smithii (Rydb.) Á. Löve Native PASM

western wheatgrass · Poaceae
Pastinaca sativa L. Introduced PASA2

wild parsnip · Apiaceae
Paxistima myrsinites (Pursh) Raf. Native PAMY

Oregon boxleaf · Celastraceae
Pedicularis bracteosa Benth. Native PEBR

bracted lousewort · Scrophulariaceae
Pedicularis bracteosa Benth. var. paysoniana (Pennell) Cronquist Native PEBRP2

Payson's lousewort · Scrophulariaceae
Pedicularis contorta Benth. Native PECO

coiled lousewort · Scrophulariaceae
Pedicularis cystopteridifolia Rydb. Native PECY5

fernleaved pedicularis · Scrophulariaceae
Pedicularis groenlandica Retz. Native PEGR2

elephanthead lousewort · Scrophulariaceae
Pedicularis oederi Vahl ex Hornem. Native PEOE

Oeder's lousewort · Scrophulariaceae
Pedicularis parryi A. Gray Native PEPA3

Parry's lousewort · Scrophulariaceae
Pedicularis parryi A. Gray ssp. parryi Native PEPAP4

Parry's lousewort · Scrophulariaceae
Pedicularis parryi A. Gray ssp. purpurea (Parry) G.D. Carr Native PEPAP5

Rocky Mountain lousewort · Scrophulariaceae
Pedicularis pulchella Pennell Native PEPU10

mountain lousewort · Scrophulariaceae
Pedicularis racemosa Douglas ex Benth. Native PERA

sickletop lousewort · Scrophulariaceae
Pedicularis racemosa Douglas ex Benth. ssp. alba Pennell Native PERAA

sickletop lousewort · Scrophulariaceae
Pellaea breweri D.C. Eaton Native PEBR4

Brewer's cliffbrake · Pteridaceae
Pellaea glabella Mett. ex Kuhn Native PEGL

smooth cliffbrake · Pteridaceae
Pellaea glabella Mett. ex Kuhn ssp. occidentalis (E.E. Nelson) Windham Native PEGLO3

western dwarf cliffbrake · Pteridaceae
Penstemon absarokensis Evert Native PEAB2

Absaroka Range beardtongue · Scrophulariaceae
Penstemon albidus Nutt. Native PEAL2

white penstemon · Scrophulariaceae
Penstemon arenicola A. Nelson Native PEAR

sand penstemon · Scrophulariaceae
Penstemon aridus Rydb. Native PEAR2

stiffleaf penstemon · Scrophulariaceae
Penstemon attenuatus Douglas ex Lindl. Native PEAT3

sulphur penstemon · Scrophulariaceae
Penstemon attenuatus Douglas ex Lindl. var. pseudoprocerus (Rydb.) Cronquist Native PEATP5

small penstemon · Scrophulariaceae
Penstemon cyaneus Pennell Native PECY3

blue penstemon · Scrophulariaceae
Penstemon deustus Douglas ex Lindl. Native PEDE4

scabland penstemon · Scrophulariaceae
Penstemon deustus Douglas ex Lindl. var. deustus Native PEDED2

scabland penstemon · Scrophulariaceae
Penstemon eriantherus Pursh Native PEER

fuzzytongue penstemon · Scrophulariaceae
Penstemon eriantherus Pursh var. eriantherus Native PEERE

fuzzytongue penstemon · Scrophulariaceae
Penstemon fruticosus (Pursh) Greene Native PEFR3

bush penstemon · Scrophulariaceae
Penstemon fruticosus (Pursh) Greene var. fruticosus Native PEFRF4

bush penstemon · Scrophulariaceae
Penstemon glaber Pursh Native PEGL3

sawsepal penstemon · Scrophulariaceae
Penstemon glaber Pursh var. glaber Native PEGLG2

sawsepal penstemon · Scrophulariaceae
Penstemon laricifolius Hook. & Arn. Native PELA9

larchleaf beardtongue · Scrophulariaceae
Penstemon laricifolius Hook. & Arn. ssp. laricifolius Native PELAL7

larchleaf beardtongue · Scrophulariaceae
Penstemon montanus Greene Native PEMO4

cordroot beardtongue · Scrophulariaceae
Penstemon montanus Greene var. montanus Native PEMOM2

cordroot beardtongue · Scrophulariaceae
Penstemon nitidus Douglas ex Benth. Native PENI3

waxleaf penstemon · Scrophulariaceae
Penstemon procerus Douglas ex Graham Native PEPR2

littleflower penstemon · Scrophulariaceae
Penstemon procerus Douglas ex Graham var. procerus Native PEPRP

pincushion beardtongue · Scrophulariaceae
Penstemon radicosus A. Nelson Native PERA2

matroot penstemon · Scrophulariaceae
Penstemon whippleanus A. Gray Native PEWH

Whipple's penstemon · Scrophulariaceae
Perideridia gairdneri (Hook. & Arn.) Mathias Native PEGA3

Gardner's yampah · Apiaceae
Perideridia gairdneri (Hook. & Arn.) Mathias ssp. borealis T.I. Chuang & Constance Native PEGAB

common yampah · Apiaceae
Petasites frigidus (L.) Fr. Native PEFR5

arctic sweet coltsfoot · Asteraceae
Petasites frigidus (L.) Fr. var. sagittatus (Banks ex Pursh) Cherniawsky Native PEFRS5

arrowleaf sweet coltsfoot · Asteraceae
Petrophytum caespitosum (Nutt.) Rydb. Native PECA12

mat rockspirea · Rosaceae
Petrophytum caespitosum (Nutt.) Rydb. var. caespitosum Native PECAC2

mat rockspirea · Rosaceae
Phacelia franklinii (R. Br.) A. Gray Native PHFR

Franklin's phacelia · Hydrophyllaceae
Phacelia hastata Douglas ex Lehm. Native PHHA

silverleaf phacelia · Hydrophyllaceae
Phacelia hastata Douglas ex Lehm. var. hastata Native PHHAH

silverleaf phacelia · Hydrophyllaceae
Phacelia heterophylla Pursh Native PHHE2

varileaf phacelia · Hydrophyllaceae
Phacelia heterophylla Pursh ssp. heterophylla Native PHHEH

varileaf phacelia · Hydrophyllaceae
Phacelia linearis (Pursh) Holz. Native PHLI

threadleaf phacelia · Hydrophyllaceae
Phacelia sericea (Graham) A. Gray Native PHSE

silky phacelia · Hydrophyllaceae
Phacelia sericea (Graham) A. Gray ssp. ciliosa (Rydb.) G.W. Gillett Native PHSEC

silky phacelia · Hydrophyllaceae
Phacelia sericea (Graham) A. Gray ssp. sericea Native PHSES

silky phacelia · Hydrophyllaceae
Phalaris arundinacea L. Native PHAR3

reed canarygrass · Poaceae
Phippsia algida (Sol.) R. Br. Native PHAL

icegrass · Poaceae
Phleum alpinum L. Native PHAL2

alpine timothy · Poaceae
Phleum pratense L. Introduced PHPR3

timothy · Poaceae
Phlox alyssifolia Greene Native PHAL3

alyssumleaf phlox · Polemoniaceae
Phlox caespitosa Nutt. Native PHCA7

tufted phlox · Polemoniaceae
Phlox hoodii Richardson Native PHHO

spiny phlox · Polemoniaceae
Phlox hoodii Richardson ssp. muscoides (Nutt.) Wherry Native PHHOM

musk phlox · Polemoniaceae
Phlox longifolia Nutt. Native PHLO2

longleaf phlox · Polemoniaceae
Phlox longifolia Nutt. ssp. longifolia Native PHLOL2

longleaf phlox · Polemoniaceae
Phlox multiflora A. Nelson Native PHMU3

flowery phlox · Polemoniaceae
Phlox multiflora A. Nelson ssp. multiflora Native PHMUM

flowery phlox · Polemoniaceae
Phlox pulvinata (Wherry) Cronquist Native PHPU5

cushion phlox · Polemoniaceae
Phragmites australis (Cav.) Trin. ex Steud. Both PHAU7

common reed · Poaceae
Phyllodoce empetriformis (Sm.) D. Don Native PHEM

pink mountainheath · Ericaceae
Phyllodoce glanduliflora (Hook.) Coville Native PHGL6

yellow mountainheath · Ericaceae
Phyllodoce ×intermedia (Hook.) Rydb. (pro sp.) [empetriformis × glanduliflora] Native PHIN7

mountainheath · Ericaceae
Physalis longifolia Nutt. Native PHLO4

longleaf groundcherry · Solanaceae
Physalis longifolia Nutt. var. longifolia Native PHLOL3

longleaf groundcherry · Solanaceae
Physaria didymocarpa (Hook.) A. Gray Native PHDI6

common twinpod · Brassicaceae
Physaria didymocarpa (Hook.) A. Gray var. didymocarpa Native PHDID

common twinpod · Brassicaceae
Physocarpus malvaceus (Greene) Kuntze Native PHMA5

mallow ninebark · Rosaceae
Physocarpus monogynus (Torr.) J.M. Coult. Native PHMO4

mountain ninebark · Rosaceae
Picea engelmannii Parry ex Engelm. Native PIEN

Engelmann spruce · Pinaceae
Picea engelmannii Parry ex Engelm. var. engelmannii Native PIENE

Engelmann spruce · Pinaceae
Picea glauca (Moench) Voss Native PIGL

white spruce · Pinaceae
Picradeniopsis oppositifolia (Nutt.) Rydb. ex Britton Native PIOP

oppositeleaf bahia · Asteraceae
Picrothamnus desertorum Nutt. Native PIDE4

bud sagebrush · Asteraceae
Pinus albicaulis Engelm. Native PIAL

whitebark pine · Pinaceae
Pinus contorta Douglas ex Loudon Native PICO

lodgepole pine · Pinaceae
Pinus contorta Douglas ex Loudon var. latifolia Engelm. ex S. Watson Native PICOL

lodgepole pine · Pinaceae
Pinus flexilis James Native PIFL2

limber pine · Pinaceae
Piperia unalascensis (Spreng.) Rydb. Native PIUN3

slender-spire orchid · Orchidaceae
Piptatheropsis exigua (Thurb.) Romasch., P.M. Peterson & R.J. Soreng Native PIEX4

little ricegrass · Poaceae
Piptatheropsis micrantha (Trin. & Rupr.) Romasch., P.M. Peterson & R.J. Soreng Native PIMI

littleseed ricegrass · Poaceae
Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. Native PLSC2

Scouler's popcornflower · Boraginaceae
Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. var. hispidulus (Greene) Dorn Native PLSCH

sleeping popcornflower · Boraginaceae
Plantago elongata Pursh Native PLEL

prairie plantain · Plantaginaceae
Plantago elongata Pursh ssp. elongata Native PLELE

prairie plantain · Plantaginaceae
Plantago eriopoda Torr. Native PLER

redwool plantain · Plantaginaceae
Plantago lanceolata L. Introduced PLLA

narrowleaf plantain · Plantaginaceae
Plantago major L. Introduced PLMA2

common plantain · Plantaginaceae
Plantago patagonica Jacq. Native PLPA2

woolly plantain · Plantaginaceae
Plantago tweedyi A. Gray Native PLTW

Tweedy's plantain · Plantaginaceae
Platanthera dilatata (Pursh) Lindl. ex Beck Native PLDI3

scentbottle · Orchidaceae
Platanthera dilatata (Pursh) Lindl. ex Beck var. albiflora (Cham.) Ledeb. Native PLDIA

scentbottle · Orchidaceae
Platanthera dilatata (Pursh) Lindl. ex Beck var. dilatata Native PLDID

scentbottle · Orchidaceae
Platanthera gracilis Lindl. Native PLGR6

lax-flowered green orchid · Orchidaceae
Platanthera obtusata (Banks ex Pursh) Lindl. Native PLOB

bluntleaved orchid · Orchidaceae
Platanthera obtusata (Banks ex Pursh) Lindl. ssp. obtusata Native PLOBO3

bluntleaved orchid · Orchidaceae
Platanthera stricta Lindl. Native PLST4

slender bog orchid · Orchidaceae
Platyschkuhria integrifolia (A. Gray) Rydb. Native PLIN7

basindaisy · Asteraceae
Platyschkuhria integrifolia (A. Gray) Rydb. var. integrifolia Native PLINI

basindaisy · Asteraceae
Poa abbreviata R. Br. Native POAB

short bluegrass · Poaceae
Poa abbreviata R. Br. ssp. pattersonii (Vasey) Á. Löve & D. Löve & Kapoor Native POABP

Patterson's bluegrass · Poaceae
Poa alpina L. Native POAL2

alpine bluegrass · Poaceae
Poa annua L. Introduced POAN

annual bluegrass · Poaceae
Poa arctica R. Br. Native POAR2

arctic bluegrass · Poaceae
Poa arctica R. Br. ssp. grayana (Vasey) Á. Löve & D. Löve & Kapoor Native POARG

arctic bluegrass · Poaceae
Poa arida Vasey Native POAR3

plains bluegrass · Poaceae
Poa bulbosa L. Introduced POBU

bulbous bluegrass · Poaceae
Poa compressa L. Introduced POCO

Canada bluegrass · Poaceae
Poa cusickii Vasey Native POCU3

Cusick's bluegrass · Poaceae
Poa cusickii Vasey ssp. epilis (Scribn.) W.A. Weber Native POCUE2

Cusick's bluegrass · Poaceae
Poa cusickii Vasey ssp. pallida Soreng Native POCUP3

Cusick's bluegrass · Poaceae
Poa fendleriana (Steud.) Vasey Native POFE

muttongrass · Poaceae
Poa glauca Vahl Native POGL

glaucous bluegrass · Poaceae
Poa glauca Vahl ssp. rupicola (Nash ex Rydb.) W.A. Weber Native POGLR2

timberline bluegrass · Poaceae
Poa leptocoma Trin. Native POLE2

marsh bluegrass · Poaceae
Poa lettermanii Vasey Native POLE3

Letterman's bluegrass · Poaceae
Poa nemoralis L. Both PONE

wood bluegrass · Poaceae
Poa nemoralis L. ssp. interior (Rydb.) W.A. Weber Native PONEI2

inland bluegrass · Poaceae
Poa palustris L. Native POPA2

fowl bluegrass · Poaceae
Poa pratensis L. Both POPR

Kentucky bluegrass · Poaceae
Poa pratensis L. ssp. pratensis Introduced POPRP2

Kentucky bluegrass · Poaceae
Poa reflexa Vasey & Scribn. ex Vasey Native PORE

nodding bluegrass · Poaceae
Poa secunda J. Presl Native POSE

Sandberg bluegrass · Poaceae
Poa wheeleri Vasey Native POWH2

Wheeler's bluegrass · Poaceae
Polanisia dodecandra (L.) DC. Native PODO3

redwhisker clammyweed · Capparaceae
Polanisia dodecandra (L.) DC. ssp. trachysperma (Torr. & A. Gray) Iltis Native PODOT

sandyseed clammyweed · Capparaceae
Polemonium pulcherrimum Hook. Native POPU3

Jacob's-ladder · Polemoniaceae
Polemonium pulcherrimum Hook. ssp. pulcherrimum Native POPUP3

Jacob's-ladder · Polemoniaceae
Polemonium viscosum Nutt. Native POVI

sticky polemonium · Polemoniaceae
Polygonum achoreum S.F. Blake Native POAC3

leathery knotweed · Polygonaceae
Polygonum amphibium L. Native POAM8

water knotweed · Polygonaceae
Polygonum amphibium L. var. stipulaceum Coleman Native POAMS

water smartweed · Polygonaceae
Polygonum aviculare L. Introduced POAV

prostrate knotweed · Polygonaceae
Polygonum bistortoides Pursh Native POBI6

American bistort · Polygonaceae
Polygonum convolvulus L. Introduced POCO10

black bindweed · Polygonaceae
Polygonum convolvulus L. var. convolvulus Introduced POCOC2

black bindweed · Polygonaceae
Polygonum douglasii Greene Native PODO4

Douglas' knotweed · Polygonaceae
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray Native PODOA2

Austin knotweed · Polygonaceae
Polygonum douglasii Greene ssp. douglasii Native PODOD4

Douglas' knotweed · Polygonaceae
Polygonum douglasii Greene ssp. johnstonii (Munz) J.C. Hickman Native PODOJ2

Johnston's knotweed · Polygonaceae
Polygonum minimum S. Watson Native POMI2

broadleaf knotweed · Polygonaceae
Polygonum polygaloides Wall. ex Meisn. Native POPO4

milkwort knotweed · Polygonaceae
Polygonum polygaloides Wall. ex Meisn. ssp. confertiflorum (Nutt. ex Piper) J.C. Hickman Native POPOC

fruitleaf knotweed · Polygonaceae
Polygonum polygaloides Wall. ex Meisn. ssp. kelloggii (Greene) J.C. Hickman Native POPOK

Kellogg's knotweed · Polygonaceae
Polygonum ramosissimum Michx. Native PORA3

bushy knotweed · Polygonaceae
Polygonum sachalinense F. Schmidt ex Maxim. Introduced POSA4

giant knotweed · Polygonaceae
Polygonum viviparum L. Native POVI3

alpine bistort · Polygonaceae
Polypogon monspeliensis (L.) Desf. Introduced POMO5

annual rabbitsfoot grass · Poaceae
Polystichum lonchitis (L.) Roth Native POLO4

northern hollyfern · Dryopteridaceae
Populus angustifolia James Native POAN3

narrowleaf cottonwood · Salicaceae
Populus balsamifera L. Native POBA2

balsam poplar · Salicaceae
Populus balsamifera L. ssp. trichocarpa (Torr. & A. Gray ex Hook.) Brayshaw Native POBAT

black cottonwood · Salicaceae
Populus deltoides W. Bartram ex Marshall Native PODE3

eastern cottonwood · Salicaceae
Populus deltoides W. Bartram ex Marshall ssp. monilifera (Aiton) Eckenwalder Native PODEM

plains cottonwood · Salicaceae
Populus tremuloides Michx. Native POTR5

quaking aspen · Salicaceae
Populus ×acuminata Rydb. (pro sp.) [angustifolia × deltoides] Native POAC5

lanceleaf cottonwood · Salicaceae
Portulaca oleracea L. Both POOL

little hogweed · Portulacaceae
Potamogeton foliosus Raf. Native POFO3

leafy pondweed · Potamogetonaceae
Potamogeton foliosus Raf. ssp. foliosus Native POFOF4

leafy pondweed · Potamogetonaceae
Potamogeton richardsonii (Benn.) Rydb. Native PORI2

Richardson's pondweed · Potamogetonaceae
Potentilla arguta Pursh Native POAR7

tall cinquefoil · Rosaceae
Potentilla arguta Pursh ssp. arguta Native POARA4

tall cinquefoil · Rosaceae
Potentilla arguta Pursh ssp. convallaria (Rydb.) D.D. Keck Native POARC

cream cinquefoil · Rosaceae
Potentilla biennis Greene Native POBI7

biennial cinquefoil · Rosaceae
Potentilla bipinnatifida Douglas ex Hook. Native POBI10

tansy cinquefoil · Rosaceae
Potentilla brevifolia Nutt. ex Torr. & A. Gray Native POBR5

sparseleaf cinquefoil · Rosaceae
Potentilla concinna Richardson Native POCO13

elegant cinquefoil · Rosaceae
Potentilla concinna Richardson var. concinna Native POCOC3

elegant cinquefoil · Rosaceae
Potentilla diversifolia Lehm. Native PODI2

varileaf cinquefoil · Rosaceae
Potentilla diversifolia Lehm. var. diversifolia Native PODID

varileaf cinquefoil · Rosaceae
Potentilla diversifolia Lehm. var. perdissecta (Rydb.) C.L. Hitchc. Native PODIP

mountainmeadow cinquefoil · Rosaceae
Potentilla effusa Douglas ex Lehm. Native POEF

branched cinquefoil · Rosaceae
Potentilla glandulosa Lindl. Native POGL9

sticky cinquefoil · Rosaceae
Potentilla glandulosa Lindl. ssp. pseudorupestris (Rydb.) D.D. Keck Native POGLP

sticky cinquefoil · Rosaceae
Potentilla gracilis Douglas ex Hook. Native POGR9

slender cinquefoil · Rosaceae
Potentilla gracilis Douglas ex Hook. var. brunnescens (Rydb.) C.L. Hitchc. Native POGRB

slender cinquefoil · Rosaceae
Potentilla gracilis Douglas ex Hook. var. fastigiata (Nutt.) S. Watson Native POGRF2

slender cinquefoil · Rosaceae
Potentilla hippiana Lehm. Native POHI6

woolly cinquefoil · Rosaceae
Potentilla hippiana Lehm. var. hippiana Native POHIH

woolly cinquefoil · Rosaceae
Potentilla hookeriana Lehm. Native POHO2

Hooker's cinquefoil · Rosaceae
Potentilla hookeriana Lehm. ssp. hookeriana Native POHOH

Hooker's cinquefoil · Rosaceae
Potentilla nivea L. Native PONI2

snow cinquefoil · Rosaceae
Potentilla nivea L. var. pentaphylla Lehm. Native PONIP

fiveleaf cinquefoil · Rosaceae
Potentilla norvegica L. Native PONO3

Norwegian cinquefoil · Rosaceae
Potentilla norvegica L. ssp. monspeliensis (L.) Asch. & Graebn. Native PONOM

Norwegian cinquefoil · Rosaceae
Potentilla ovina Macoun ex J.M. Macoun Native POOV2

sheep cinquefoil · Rosaceae
Potentilla ovina Macoun ex J.M. Macoun var. ovina Native POOVO

sheep cinquefoil · Rosaceae
Potentilla paradoxa Nutt. Native POPA15

Paradox cinquefoil · Rosaceae
Potentilla pectinisecta Rydb. Native POPE23

combleaf cinquefoil · Rosaceae
Potentilla pensylvanica L. Native POPE8

Pennsylvania cinquefoil · Rosaceae
Potentilla pensylvanica L. var. pensylvanica Native POPEP5

Pennsylvania cinquefoil · Rosaceae
Potentilla pulcherrima Lehm. Native POPU9

beautiful cinquefoil · Rosaceae
Potentilla recta L. Introduced PORE5

sulphur cinquefoil · Rosaceae
Potentilla rivalis Nutt. Native PORI3

brook cinquefoil · Rosaceae
Potentilla rubricaulis Lehm. Native PORU3

Rocky Mountain cinquefoil · Rosaceae
Potentilla subjuga Rydb. Native POSU5

Colorado cinquefoil · Rosaceae
Potentilla uniflora Ledeb. Native POUN2

oneflower cinquefoil · Rosaceae
Primula egaliksensis Wormsk. ex Hornem. Native PREG

Greenland primrose · Primulaceae
Primula parryi A. Gray Native PRPA

Parry's primrose · Primulaceae
Prosartes trachycarpa S. Watson Native PRTR4

roughfruit fairybells · Liliaceae
Prunella vulgaris L. Native PRVU

common selfheal · Lamiaceae
Prunella vulgaris L. ssp. lanceolata (W. Bartram) Hultén Native PRVUL2

lance selfheal · Lamiaceae
Prunus virginiana L. Native PRVI

chokecherry · Rosaceae
Prunus virginiana L. var. melanocarpa (A. Nelson) Sarg. Native PRVIM

black chokecherry · Rosaceae
Psathyrostachys juncea (Fisch.) Nevski Introduced PSJU3

Russian wildrye · Poaceae
Pseudoroegneria spicata (Pursh) Á. Löve Native PSSP6

bluebunch wheatgrass · Poaceae
Pseudoroegneria spicata (Pursh) Á. Löve ssp. spicata Native PSSPS

bluebunch wheatgrass · Poaceae
Pseudotsuga menziesii (Mirb.) Franco Native PSME

Douglas-fir · Pinaceae
Pseudotsuga menziesii (Mirb.) Franco var. glauca (Beissn.) Franco Native PSMEG

Rocky Mountain Douglas-fir · Pinaceae
Psoralidium lanceolatum (Pursh) Rydb. Native PSLA3

lemon scurfpea · Fabaceae
Pterospora andromedea Nutt. Native PTAN2

woodland pinedrops · Monotropaceae
Pteryxia hendersonii (J.M. Coult. & Rose) Mathias & Constance Native PTHE

Henderson's wavewing · Apiaceae
Pteryxia terebinthina (Hook.) J.M. Coult. & Rose Native PTTE

turpentine wavewing · Apiaceae
Pteryxia terebinthina (Hook.) J.M. Coult. & Rose var. albiflora (Torr. & A. Gray) Mathias Native PTTEA

turpentine wavewing · Apiaceae
Pteryxia terebinthina (Hook.) J.M. Coult. & Rose var. foeniculacea (Nutt. ex Torr. & A. Gray) Mathias Native PTTEF

turpentine wavewing · Apiaceae
Puccinellia distans (Jacq.) Parl. Both PUDI

weeping alkaligrass · Poaceae
Puccinellia distans (Jacq.) Parl. ssp. distans Introduced PUDID

weeping alkaligrass · Poaceae
Puccinellia nuttalliana (Schult.) Hitchc. Native PUNU2

Nuttall's alkaligrass · Poaceae
Pulsatilla patens (L.) Mill. Native PUPA5

eastern pasqueflower · Ranunculaceae
Pulsatilla patens (L.) Mill. ssp. multifida (Pritz.) Zamels Native PUPAM

cutleaf anemone · Ranunculaceae
Purshia tridentata (Pursh) DC. Native PUTR2

antelope bitterbrush · Rosaceae
Pyrola asarifolia Michx. Native PYAS

liverleaf wintergreen · Pyrolaceae
Pyrola asarifolia Michx. ssp. asarifolia Native PYASA

liverleaf wintergreen · Pyrolaceae
Pyrola chlorantha Sw. Native PYCH

greenflowered wintergreen · Pyrolaceae
Pyrola minor L. Native PYMI

snowline wintergreen · Pyrolaceae
Pyrola picta Sm. Native PYPI2

whiteveined wintergreen · Pyrolaceae
Pyrrocoma carthamoides Hook. Native PYCA3

largeflower goldenweed · Asteraceae
Pyrrocoma carthamoides Hook. var. subsquarrosa (Greene) G. Brown & Keil Native PYCAS

largeflower goldenweed · Asteraceae
Pyrrocoma integrifolia (Porter ex A. Gray) Greene Native PYIN3

many-stemmed goldenweed · Asteraceae
Pyrrocoma lanceolata (Hook.) Greene Native PYLA

lanceleaf goldenweed · Asteraceae
Pyrrocoma lanceolata (Hook.) Greene var. lanceolata Native PYLAL

lanceleaf goldenweed · Asteraceae
Pyrrocoma uniflora (Hook.) Greene Native PYUN2

plantain goldenweed · Asteraceae
Pyrrocoma uniflora (Hook.) Greene var. uniflora Native PYUNU

plantain goldenweed · Asteraceae
Ranunculus acriformis A. Gray Native RAAC2

sharpleaf buttercup · Ranunculaceae
Ranunculus acriformis A. Gray var. montanensis (Rydb.) L.D. Benson Native RAACM

mountain sharp buttercup · Ranunculaceae
Ranunculus acris L. Both RAAC3

tall buttercup · Ranunculaceae
Ranunculus acris L. var. acris Introduced RAACA3

showy buttercup · Ranunculaceae
Ranunculus alismifolius Geyer ex Benth. Native RAAL

plantainleaf buttercup · Ranunculaceae
Ranunculus alismifolius Geyer ex Benth. var. alismifolius Native RAALA2

plantainleaf buttercup · Ranunculaceae
Ranunculus aquatilis L. Native RAAQ

white water crowfoot · Ranunculaceae
Ranunculus cymbalaria Pursh Native RACY

alkali buttercup · Ranunculaceae
Ranunculus eschscholtzii Schltdl. Native RAES

Eschscholtz's buttercup · Ranunculaceae
Ranunculus eschscholtzii Schltdl. var. eschscholtzii Native RAESE2

Eschscholtz's buttercup · Ranunculaceae
Ranunculus eschscholtzii Schltdl. var. trisectus (Eastw.) L.D. Benson Native RAEST

threesection buttercup · Ranunculaceae
Ranunculus eximius Greene Native RAEX

tundra buttercup · Ranunculaceae
Ranunculus glaberrimus Hook. Native RAGL

sagebrush buttercup · Ranunculaceae
Ranunculus glaberrimus Hook. var. ellipticus (Greene) Greene Native RAGLE

elliptical buttercup · Ranunculaceae
Ranunculus gmelinii DC. Native RAGM

Gmelin's buttercup · Ranunculaceae
Ranunculus hyperboreus Rottb. Native RAHY2

high northern buttercup · Ranunculaceae
Ranunculus inamoenus Greene Native RAIN

graceful buttercup · Ranunculaceae
Ranunculus inamoenus Greene var. alpeophilus (A. Nelson) L.D. Benson Native RAINA

graceful buttercup · Ranunculaceae
Ranunculus inamoenus Greene var. inamoenus Native RAINI2

graceful buttercup · Ranunculaceae
Ranunculus jovis A. Nelson Native RAJO

Utah buttercup · Ranunculaceae
Ranunculus longirostris Godr. Native RALO2

longbeak buttercup · Ranunculaceae
Ranunculus macounii Britton Native RAMA2

Macoun's buttercup · Ranunculaceae
Ranunculus pedatifidus Sm. Native RAPE

surefoot buttercup · Ranunculaceae
Ranunculus pedatifidus Sm. var. affinis (R. Br.) L.D. Benson Native RAPEA

northern buttercup · Ranunculaceae
Ranunculus pygmaeus Wahlenb. Native RAPY

pygmy buttercup · Ranunculaceae
Ranunculus pygmaeus Wahlenb. var. pygmaeus Native RAPYP2

pygmy buttercup · Ranunculaceae
Ranunculus repens L. Introduced RARE3

creeping buttercup · Ranunculaceae
Ranunculus sceleratus L. Native RASC3

cursed buttercup · Ranunculaceae
Ranunculus sceleratus L. var. multifidus Nutt. Native RASCM

cursed buttercup · Ranunculaceae
Ranunculus suksdorfii A. Gray Native RASU4

Suksdorf's buttercup · Ranunculaceae
Ranunculus trichophyllus Chaix Native RATR

threadleaf crowfoot · Ranunculaceae
Ranunculus trichophyllus Chaix var. trichophyllus Native RATRT

threadleaf crowfoot · Ranunculaceae
Ranunculus uncinatus D. Don ex G. Don Native RAUN

woodland buttercup · Ranunculaceae
Ranunculus uncinatus D. Don ex G. Don var. parviflorus (Torr.) L.D. Benson Native RAUNP

Idaho buttercup · Ranunculaceae
Ranunculus uncinatus D. Don ex G. Don var. uncinatus Native RAUNU

woodland buttercup · Ranunculaceae
Ranunculus verecundus B.L. Rob. ex Piper Native RAVE

wetslope buttercup · Ranunculaceae
Ratibida columnifera (Nutt.) Wooton & Standl. Native RACO3

upright prairie coneflower · Asteraceae
Reseda lutea L. Introduced RELU

yellow mignonette · Resedaceae
Rhamnus alnifolia L'Hér. Native RHAL

alderleaf buckthorn · Rhamnaceae
Rhodiola integrifolia Raf. Native RHIN11

ledge stonecrop · Crassulaceae
Rhodiola integrifolia Raf. ssp. integrifolia Native RHINI

ledge stonecrop · Crassulaceae
Rhodiola rhodantha (A. Gray) H. Jacobsen Native RHRH4

redpod stonecrop · Crassulaceae
Rhus trilobata Nutt. Native RHTR

skunkbush sumac · Anacardiaceae
Rhus trilobata Nutt. var. trilobata Native RHTRT

skunkbush sumac · Anacardiaceae
Ribes americanum Mill. Native RIAM2

American black currant · Grossulariaceae
Ribes aureum Pursh Native RIAU

golden currant · Grossulariaceae
Ribes aureum Pursh var. aureum Native RIAUA

golden currant · Grossulariaceae
Ribes cereum Douglas Native RICE

wax currant · Grossulariaceae
Ribes cereum Douglas var. pedicellare W.H. Brewer & S. Watson Native RICEP

whisky currant · Grossulariaceae
Ribes hudsonianum Richardson Native RIHU

northern black currant · Grossulariaceae
Ribes hudsonianum Richardson var. petiolare (Douglas) Jancz. Native RIHUP

western black currant · Grossulariaceae
Ribes lacustre (Pers.) Poir. Native RILA

prickly currant · Grossulariaceae
Ribes montigenum McClatchie Native RIMO2

gooseberry currant · Grossulariaceae
Ribes oxyacanthoides L. Native RIOX

Canadian gooseberry · Grossulariaceae
Ribes oxyacanthoides L. ssp. setosum (Lindl.) Sinnott Native RIOXS

inland gooseberry · Grossulariaceae
Ribes viscosissimum Pursh Native RIVI3

sticky currant · Grossulariaceae
Rorippa alpina (S. Watson) Rydb. Native ROAL

alpine yellowcress · Brassicaceae
Rorippa austriaca (Crantz) Besser Introduced ROAU

Austrian yellowcress · Brassicaceae
Rorippa calycina (Engelm.) Rydb. Native ROCA

persistent sepal yellowcress · Brassicaceae
Rorippa curvipes Greene Native ROCU2

bluntleaf yellowcress · Brassicaceae
Rorippa curvipes Greene var. curvipes Native ROCUC

bluntleaf yellowcress · Brassicaceae
Rorippa curvipes Greene var. truncata (Jeps.) Rollins Native ROCUT

bluntleaf yellowcress · Brassicaceae
Rorippa curvisiliqua (Hook.) Besser ex Britton Native ROCU

curvepod yellowcress · Brassicaceae
Rorippa palustris (L.) Besser Native ROPA2

bog yellowcress · Brassicaceae
Rorippa palustris (L.) Besser ssp. fernaldiana (Butters & Abbe) Jonsell Native ROPAF2

Fernald's yellowcress · Brassicaceae
Rorippa palustris (L.) Besser ssp. hispida (Desv.) Jonsell Native ROPAH

hispid yellowcress · Brassicaceae
Rorippa sinuata (Nutt.) Hitchc. Native ROSI2

spreading yellowcress · Brassicaceae
Rosa acicularis Lindl. Native ROAC

prickly rose · Rosaceae
Rosa acicularis Lindl. ssp. sayi (Schwein.) W.H. Lewis Native ROACS

prickly rose · Rosaceae
Rosa nutkana C. Presl Native RONU

Nootka rose · Rosaceae
Rosa nutkana C. Presl var. hispida Fernald Native RONUH

bristly Nootka rose · Rosaceae
Rosa woodsii Lindl. Native ROWO

Woods' rose · Rosaceae
Rosa woodsii Lindl. var. woodsii Native ROWOW

Woods' rose · Rosaceae
Rubus idaeus L. Both RUID

American red raspberry · Rosaceae
Rubus idaeus L. ssp. strigosus (Michx.) Focke Native RUIDS2

grayleaf red raspberry · Rosaceae
Rubus parviflorus Nutt. Native RUPA

thimbleberry · Rosaceae
Rubus parviflorus Nutt. var. parviflorus Native RUPAP2

thimbleberry · Rosaceae
Rudbeckia laciniata L. Native RULA3

cutleaf coneflower · Asteraceae
Rudbeckia occidentalis Nutt. Native RUOC2

western coneflower · Asteraceae
Rumex acetosa L. Both RUAC2

garden sorrel · Polygonaceae
Rumex acetosa L. ssp. acetosa Introduced RUACA

garden sorrel · Polygonaceae
Rumex acetosella L. Introduced RUAC3

common sheep sorrel · Polygonaceae
Rumex aquaticus L. Native RUAQ

western dock · Polygonaceae
Rumex aquaticus L. var. fenestratus (Greene) Dorn Native RUAQF

western dock · Polygonaceae
Rumex crispus L. Introduced RUCR

curly dock · Polygonaceae
Rumex crispus L. ssp. crispus Introduced RUCRC

curly dock · Polygonaceae
Rumex maritimus L. Native RUMA4

golden dock · Polygonaceae
Rumex paucifolius Nutt. Native RUPA6

alpine sheep sorrel · Polygonaceae
Rumex paucifolius Nutt. ssp. paucifolius Native RUPAP

alpine sheep sorrel · Polygonaceae
Rumex salicifolius Weinm. Native RUSA

willow dock · Polygonaceae
Rumex salicifolius Weinm. var. denticulatus Torr. Native RUSAD

toothed willow dock · Polygonaceae
Rumex salicifolius Weinm. var. mexicanus (Meisn.) C.L. Hitchc. Native RUSAM

Mexican dock · Polygonaceae
Rumex venosus Pursh Native RUVE2

veiny dock · Polygonaceae
Ruppia cirrhosa (Petagna) Grande Native RUCI2

spiral ditchgrass · Ruppiaceae
Sagina saginoides (L.) Karst. Native SASA

arctic pearlwort · Caryophyllaceae
Salicornia rubra A. Nelson Native SARU

red swampfire · Chenopodiaceae
Salix amygdaloides Andersson Native SAAM2

peachleaf willow · Salicaceae
Salix arctica Pall. Native SAAR27

arctic willow · Salicaceae
Salix barclayi Andersson Native SABA3

Barclay's willow · Salicaceae
Salix barrattiana Hook. Native SABA4

Barratt's willow · Salicaceae
Salix bebbiana Sarg. Native SABE2

Bebb willow · Salicaceae
Salix boothii Dorn Native SABO2

Booth's willow · Salicaceae
Salix brachycarpa Nutt. Native SABR

shortfruit willow · Salicaceae
Salix brachycarpa Nutt. var. brachycarpa Native SABRB7

shortfruit willow · Salicaceae
Salix candida Flueggé ex Willd. Native SACA4

sageleaf willow · Salicaceae
Salix cascadensis Cockerell Native SACA6

cascade willow · Salicaceae
Salix drummondiana Barratt ex Hook. Native SADR

Drummond's willow · Salicaceae
Salix eastwoodiae Cockerell ex A. Heller Native SAEA

mountain willow · Salicaceae
Salix exigua Nutt. Native SAEX

narrowleaf willow · Salicaceae
Salix fragilis L. Introduced SAFR

crack willow · Salicaceae
Salix geyeriana Andersson Native SAGE2

Geyer willow · Salicaceae
Salix glauca L. Native SAGL

grayleaf willow · Salicaceae
Salix glauca L. ssp. glauca Native SAGLG

grayleaf willow · Salicaceae
Salix glauca L. ssp. glauca var. villosa (D. Don ex Hook.) Andersson Native SAGLV

grayleaf willow · Salicaceae
Salix lucida Muhl. Native SALU

shining willow · Salicaceae
Salix lucida Muhl. ssp. caudata (Nutt.) A.E. Murray Native SALUC

greenleaf willow · Salicaceae
Salix lutea Nutt. Native SALU2

yellow willow · Salicaceae
Salix melanopsis Nutt. Native SAME2

dusky willow · Salicaceae
Salix myrtillifolia Andersson Native SAMY

blueberry willow · Salicaceae
Salix nivalis Hook. Native SANI8

snow willow · Salicaceae
Salix petrophila Rydb. Native SAPE18

alpine willow · Salicaceae
Salix planifolia Pursh Native SAPL2

diamondleaf willow · Salicaceae
Salix planifolia Pursh ssp. planifolia Native SAPLP4

diamondleaf willow · Salicaceae
Salix pseudomonticola C.R. Ball Native SAPS

false mountain willow · Salicaceae
Salix rotundifolia Trautv. Native SARO2

least willow · Salicaceae
Salix rotundifolia Trautv. ssp. dodgeana (Rydb.) Argus Native SAROD

timberline willow · Salicaceae
Salix scouleriana Barratt ex Hook. Native SASC

Scouler's willow · Salicaceae
Salix tweedyi (Bebb ex Rose) C.R. Ball Native SATW

Tweedy's willow · Salicaceae
Salix wolfii Bebb Native SAWO

Wolf's willow · Salicaceae
Salsola tragus L. Introduced SATR12

prickly Russian thistle · Chenopodiaceae
Salvia reflexa Hornem. Native SARE3

lanceleaf sage · Lamiaceae
Salvia ×sylvestris L. (pro sp.) [nemorosa × pratensis] Introduced SASY

woodland sage · Lamiaceae
Sambucus racemosa L. Native SARA2

red elderberry · Caprifoliaceae
Sambucus racemosa L. var. melanocarpa (A. Gray) McMinn Native SARAM4

Rocky Mountain elder · Caprifoliaceae
Sambucus racemosa L. var. racemosa Native SARAR3

red elderberry · Caprifoliaceae
Sanguisorba minor Scop. Introduced SAMI3

small burnet · Rosaceae
Sanguisorba minor Scop. ssp. balearica (Bourg. ex Nyman) M. Garm. & C. Navarro Introduced SAMIB2

small burnet · Rosaceae
Sanicula graveolens Poepp. ex DC. Native SAGR5

northern sanicle · Apiaceae
Sarcobatus vermiculatus (Hook.) Torr. Native SAVE4

greasewood · Chenopodiaceae
Saxifraga adscendens L. Native SAAD

wedgeleaf saxifrage · Saxifragaceae
Saxifraga adscendens L. ssp. oregonensis (Raf.) Bacig. Native SAADO2

small saxifrage · Saxifragaceae
Saxifraga bronchialis L. Native SABR6

yellowdot saxifrage · Saxifragaceae
Saxifraga bronchialis L. ssp. austromontana (Wiegand) Piper Native SABRA2

matted saxifrage · Saxifragaceae
Saxifraga caespitosa L. Native SACA50

tufted alpine saxifrage · Saxifragaceae
Saxifraga caespitosa L. ssp. monticola (Small) A.E. Porsild Native SACAM2

tufted alpine saxifrage · Saxifragaceae
Saxifraga cernua L. Native SACE2

nodding saxifrage · Saxifragaceae
Saxifraga chrysantha A. Gray Native SACH4

goldbloom saxifrage · Saxifragaceae
Saxifraga flagellaris Willd. ex Sternb. Native SAFL6

whiplash saxifrage · Saxifragaceae
Saxifraga flagellaris Willd. ex Sternb. ssp. crandallii (Gandog.) Hultén Native SAFLC

Crandall's saxifrage · Saxifragaceae
Saxifraga occidentalis S. Watson Native SAOC4

Alberta saxifrage · Saxifragaceae
Saxifraga odontoloma Piper Native SAOD2

brook saxifrage · Saxifragaceae
Saxifraga oppositifolia L. Native SAOP

purple mountain saxifrage · Saxifragaceae
Saxifraga oppositifolia L. ssp. oppositifolia Native SAOPO

purple mountain saxifrage · Saxifragaceae
Saxifraga rhomboidea Greene Native SARH2

diamondleaf saxifrage · Saxifragaceae
Saxifraga rivularis L. Native SARI8

weak saxifrage · Saxifragaceae
Saxifraga subapetala E.E. Nelson Native SASU6

Yellowstone saxifrage · Saxifragaceae
Schedonnardus paniculatus (Nutt.) Trel. Native SCPA

tumblegrass · Poaceae
Schedonorus arundinaceus (Schreb.) Dumort., nom. cons. Introduced SCAR7

tall fescue · Poaceae
Schedonorus pratensis (Huds.) P. Beauv. Introduced SCPR4

meadow fescue · Poaceae
Schizachne purpurascens (Torr.) Swallen Native SCPU

false melic · Poaceae
Schizachyrium scoparium (Michx.) Nash Native SCSC

little bluestem · Poaceae
Schizachyrium scoparium (Michx.) Nash var. scoparium Native SCSCS

little bluestem · Poaceae
Schoenocrambe linifolia (Nutt.) Greene Native SCLI

flaxleaf plainsmustard · Brassicaceae
Schoenoplectus acutus (Muhl. ex Bigelow) Á. Löve & D. Löve Native SCAC3

hardstem bulrush · Cyperaceae
Schoenoplectus acutus (Muhl. ex Bigelow) Á. Löve & D. Löve var. acutus Native SCACA

hardstem bulrush · Cyperaceae
Schoenoplectus pungens (Vahl) Palla Native SCPU10

common threesquare · Cyperaceae
Schoenoplectus pungens (Vahl) Palla var. longispicatus (Britton) S.G. Sm. Native SCPUL4

common threesquare · Cyperaceae
Schoenoplectus tabernaemontani (C.C. Gmel.) Palla Native SCTA2

softstem bulrush · Cyperaceae
Scirpus microcarpus J. Presl & C. Presl Native SCMI2

panicled bulrush · Cyperaceae
Scolochloa festucacea (Willd.) Link Native SCFE

common rivergrass · Poaceae
Scutellaria galericulata L. Native SCGA

marsh skullcap · Lamiaceae
Sedum lanceolatum Torr. Native SELA

spearleaf stonecrop · Crassulaceae
Sedum stenopetalum Pursh Native SEST2

wormleaf stonecrop · Crassulaceae
Sedum stenopetalum Pursh ssp. stenopetalum Native SESTS2

wormleaf stonecrop · Crassulaceae
Selaginella densa Rydb. Native SEDE2

lesser spikemoss · Selaginellaceae
Selaginella densa Rydb. var. densa Native SEDED

lesser spikemoss · Selaginellaceae
Selaginella densa Rydb. var. scopulorum (Maxon) R. Tryon Native SEDES

Rocky Mountain spikemoss · Selaginellaceae
Senecio amplectens A. Gray Native SEAM

showy alpine ragwort · Asteraceae
Senecio amplectens A. Gray var. holmii (Greene) Harrington Native SEAMH

Holm's ragwort · Asteraceae
Senecio crassulus A. Gray Native SECR

thickleaf ragwort · Asteraceae
Senecio eremophilus Richardson Native SEER2

desert ragwort · Asteraceae
Senecio eremophilus Richardson var. eremophilus Native SEERE

desert ragwort · Asteraceae
Senecio fremontii Torr. & A. Gray Native SEFR3

dwarf mountain ragwort · Asteraceae
Senecio fremontii Torr. & A. Gray var. fremontii Native SEFRF

dwarf mountain ragwort · Asteraceae
Senecio integerrimus Nutt. Native SEIN2

lambstongue ragwort · Asteraceae
Senecio integerrimus Nutt. var. exaltatus (Nutt.) Cronquist Native SEINE

Columbia ragwort · Asteraceae
Senecio lugens Richardson Native SELU

small blacktip ragwort · Asteraceae
Senecio serra Hook. Native SESE2

tall ragwort · Asteraceae
Senecio serra Hook. var. admirabilis (Greene) A. Nelson Native SESEA

tall ragwort · Asteraceae
Senecio serra Hook. var. serra Native SESES

tall ragwort · Asteraceae
Senecio sphaerocephalus Greene Native SESP4

ballhead ragwort · Asteraceae
Senecio triangularis Hook. Native SETR

arrowleaf ragwort · Asteraceae
Setaria viridis (L.) P. Beauv. Introduced SEVI4

green bristlegrass · Poaceae
Setaria viridis (L.) P. Beauv. var. viridis Introduced SEVIV

green bristlegrass · Poaceae
Shepherdia argentea (Pursh) Nutt. Native SHAR

silver buffaloberry · Elaeagnaceae
Shepherdia canadensis (L.) Nutt. Native SHCA

russet buffaloberry · Elaeagnaceae
Shoshonea pulvinata Evert & Constance Native SHPU

Shoshone carrot · Apiaceae
Sibbaldia procumbens L. Native SIPR

creeping sibbaldia · Rosaceae
Silene acaulis (L.) Jacq. Native SIAC

moss campion · Caryophyllaceae
Silene acaulis (L.) Jacq. var. subacaulescens (F.N. Williams) Fernald & H. St. John Native SIACS2

moss campion · Caryophyllaceae
Silene antirrhina L. Native SIAN2

sleepy silene · Caryophyllaceae
Silene csereii Baumg. Introduced SICS

Balkan catchfly · Caryophyllaceae
Silene dichotoma Ehrh. Introduced SIDI2

forked catchfly · Caryophyllaceae
Silene drummondii Hook. Native SIDR

Drummond's campion · Caryophyllaceae
Silene drummondii Hook. var. drummondii Native SIDRD

Drummond's campion · Caryophyllaceae
Silene drummondii Hook. var. striata (Rydb.) Bocquet Native SIDRS

Drummond's campion · Caryophyllaceae
Silene latifolia Poir. Introduced SILA21

bladder campion · Caryophyllaceae
Silene latifolia Poir. ssp. alba (Mill.) Greuter & Burdet Introduced SILAA3

bladder campion · Caryophyllaceae
Silene menziesii Hook. Native SIME

Menzies' campion · Caryophyllaceae
Silene menziesii Hook. ssp. menziesii Native SIMEM

Menzies' campion · Caryophyllaceae
Silene menziesii Hook. ssp. menziesii var. menziesii Native SIMEM2

Menzies' campion · Caryophyllaceae
Silene menziesii Hook. ssp. menziesii var. viscosa (Greene) C.L. Hitchc. & Maguire Native SIMEV2

Menzies' campion · Caryophyllaceae
Silene parryi (S. Watson) C.L. Hitchc. & Maguire Native SIPA4

Parry's silene · Caryophyllaceae
Silene repens Patrin ex Pers. Native SIRE3

pink campion · Caryophyllaceae
Silene repens Patrin ex Pers. ssp. australis C.L. Hitchc. & Maguire Native SIREA

pink campion · Caryophyllaceae
Silene uralensis (Rupr.) Bocquet Native SIUR

apetalous catchfly · Caryophyllaceae
Silene uralensis (Rupr.) Bocquet ssp. montana (S. Watson) McNeill Native SIURM

apetalous catchfly · Caryophyllaceae
Silene vulgaris (Moench) Garcke Introduced SIVU

maidenstears · Caryophyllaceae
Sinapis alba L. Introduced SIAL5

white mustard · Brassicaceae
Sinapis arvensis L. Introduced SIAR4

charlock mustard · Brassicaceae
Sinapis arvensis L. ssp. arvensis Introduced SIARA

wild mustard · Brassicaceae
Sisymbrium altissimum L. Introduced SIAL2

tall tumblemustard · Brassicaceae
Sisymbrium officinale (L.) Scop. Introduced SIOF

hedgemustard · Brassicaceae
Sisyrinchium idahoense E.P. Bicknell Native SIID

Idaho blue-eyed grass · Iridaceae
Sisyrinchium idahoense E.P. Bicknell var. occidentale (E.P. Bicknell) Douglass M. Hend. Native SIIDO

Idaho blue-eyed grass · Iridaceae
Sium suave Walter Native SISU2

hemlock waterparsnip · Apiaceae
Smelowskia calycina (Stephan ex Willd.) C.A. Mey. Native SMCA

alpine smelowskia · Brassicaceae
Smelowskia calycina (Stephan ex Willd.) C.A. Mey. var. americana (Regel & Herder) Drury & Rollins Native SMCAA

American false candytuft · Brassicaceae
Solanum dulcamara L. Introduced SODU

climbing nightshade · Solanaceae
Solanum dulcamara L. var. dulcamara Introduced SODUD

climbing nightshade · Solanaceae
Solanum triflorum Nutt. Native SOTR

cutleaf nightshade · Solanaceae
Solidago canadensis L. Native SOCA6

Canada goldenrod · Asteraceae
Solidago canadensis L. var. salebrosa (Piper) M.E. Jones Native SOCAS

rough Canada goldenrod · Asteraceae
Solidago gigantea Aiton Native SOGI

giant goldenrod · Asteraceae
Solidago missouriensis Nutt. Native SOMI2

Missouri goldenrod · Asteraceae
Solidago missouriensis Nutt. var. missouriensis Native SOMIM

Missouri goldenrod · Asteraceae
Solidago mollis Bartlett Native SOMO

velvety goldenrod · Asteraceae
Solidago mollis Bartlett var. mollis Native SOMOM

velvety goldenrod · Asteraceae
Solidago multiradiata Aiton Native SOMU

Rocky Mountain goldenrod · Asteraceae
Solidago multiradiata Aiton var. scopulorum A. Gray Native SOMUS

manyray goldenrod · Asteraceae
Solidago nemoralis Aiton Native SONE

gray goldenrod · Asteraceae
Solidago nemoralis Aiton var. longipetiolata (Mack. & Bush) Palmer & Steyerm. Native SONEL

gray goldenrod · Asteraceae
Solidago simplex Kunth Native SOSI3

Mt. Albert goldenrod · Asteraceae
Solidago simplex Kunth ssp. simplex Native SOSIS

Mt. Albert goldenrod · Asteraceae
Solidago simplex Kunth ssp. simplex var. simplex Native SOSIS3

Mt. Albert goldenrod · Asteraceae
Solidago velutina DC. Native SOVE6

threenerve goldenrod · Asteraceae
Sonchus arvensis L. Introduced SOAR2

field sowthistle · Asteraceae
Sonchus arvensis L. ssp. uliginosus (M. Bieb.) Nyman Introduced SOARU

moist sowthistle · Asteraceae
Sonchus asper (L.) Hill Introduced SOAS

spiny sowthistle · Asteraceae
Sonchus oleraceus L. Introduced SOOL

common sowthistle · Asteraceae
Sorbus scopulina Greene Native SOSC2

Greene's mountain ash · Rosaceae
Sorbus scopulina Greene var. scopulina Native SOSCS

Greene's mountain ash · Rosaceae
Sparganium angustifolium Michx. Native SPAN2

narrowleaf bur-reed · Sparganiaceae
Sparganium natans L. Native SPNA

small bur-reed · Sparganiaceae
Spartina gracilis Trin. Native SPGR

alkali cordgrass · Poaceae
Spergularia rubra (L.) J. Presl & C. Presl Introduced SPRU

red sandspurry · Caryophyllaceae
Sphaeralcea coccinea (Nutt.) Rydb. Native SPCO

scarlet globemallow · Malvaceae
Sphaeralcea coccinea (Nutt.) Rydb. ssp. coccinea Native SPCOC

scarlet globemallow · Malvaceae
Sphaerophysa salsula (Pall.) DC. Introduced SPSA3

alkali swainsonpea · Fabaceae
Sphenopholis intermedia (Rydb.) Rydb. Native SPIN3

slender wedgescale · Poaceae
Sphenopholis obtusata (Michx.) Scribn. Native SPOB

prairie wedgescale · Poaceae
Spiraea lucida Douglas ex Greene Native SPLU5

shinyleaf spirea · Rosaceae
Spiranthes romanzoffiana Cham. Native SPRO

hooded lady's tresses · Orchidaceae
Sporobolus airoides (Torr.) Torr. Native SPAI

alkali sacaton · Poaceae
Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

sand dropseed · Poaceae
Sporobolus neglectus Nash Native SPNE2

puffsheath dropseed · Poaceae
Stachys pilosa Nutt. Native STPI6

hairy hedgenettle · Lamiaceae
Stachys pilosa Nutt. var. pilosa Native STPIP5

hairy hedgenettle · Lamiaceae
Stanleya pinnata (Pursh) Britton Native STPI

desert princesplume · Brassicaceae
Stanleya pinnata (Pursh) Britton var. pinnata Native STPIP

desert princesplume · Brassicaceae
Stanleya tomentosa Parry Native STTO

woolly princesplume · Brassicaceae
Stanleya tomentosa Parry var. tomentosa Native STTOT

woolly princesplume · Brassicaceae
Stellaria borealis Bigelow Native STBO3

boreal starwort · Caryophyllaceae
Stellaria borealis Bigelow ssp. borealis Native STBOB

boreal starwort · Caryophyllaceae
Stellaria calycantha (Ledeb.) Bong. Native STCA

northern starwort · Caryophyllaceae
Stellaria crassifolia Ehrh. Native STCR

fleshy starwort · Caryophyllaceae
Stellaria crassifolia Ehrh. var. crassifolia Native STCRC

fleshy starwort · Caryophyllaceae
Stellaria longifolia Muhl. ex Willd. Native STLO

longleaf starwort · Caryophyllaceae
Stellaria longifolia Muhl. ex Willd. var. longifolia Native STLOL

longleaf starwort · Caryophyllaceae
Stellaria longipes Goldie Native STLO2

longstalk starwort · Caryophyllaceae
Stellaria longipes Goldie ssp. longipes Native STLOL7

longstalk starwort · Caryophyllaceae
Stellaria media (L.) Vill. Introduced STME2

common chickweed · Caryophyllaceae
Stellaria media (L.) Vill. ssp. media Introduced STMEM

common chickweed · Caryophyllaceae
Stellaria obtusa Engelm. Native STOB

Rocky Mountain chickweed · Caryophyllaceae
Stellaria umbellata Turcz. ex Kar. & Kir. Native STUM

umbrella starwort · Caryophyllaceae
Stenotus acaulis (Nutt.) Nutt. Native STAC

stemless mock goldenweed · Asteraceae
Stenotus armerioides Nutt. Native STAR10

thrift mock goldenweed · Asteraceae
Stenotus armerioides Nutt. var. armerioides Native STARA

thrift mock goldenweed · Asteraceae
Stephanomeria minor (Hook.) Nutt. Native STMI13

lesser wirelettuce · Asteraceae
Stephanomeria minor (Hook.) Nutt. var. minor Native STMIM

narrowleaf wirelettuce · Asteraceae
Stephanomeria minor (Hook.) Nutt. var. myrioclada (D.C. Eaton) Kartesz Native STMIM2

narrowleaf wirelettuce · Asteraceae
Stephanomeria runcinata Nutt. Native STRU3

desert wirelettuce · Asteraceae
Streptopus amplexifolius (L.) DC. Both STAM2

claspleaf twistedstalk · Liliaceae
Streptopus amplexifolius (L.) DC. var. chalazatus Fassett Native STAMC

tubercle twistedstalk · Liliaceae
Stuckenia filiformis (Pers.) Börner Native STFI6

fineleaf pondweed · Potamogetonaceae
Stuckenia filiformis (Pers.) Börner ssp. alpina (Blytt) Haynes, D.H. Les & M. Kral Native STFIA2

fineleaf pondweed · Potamogetonaceae
Stuckenia pectinata (L.) Börner Native STPE15

sago pondweed · Potamogetonaceae
Suaeda calceoliformis (Hook.) Moq. Native SUCA2

Pursh seepweed · Chenopodiaceae
Suaeda moquinii (Torr.) Greene Native SUMO

Mojave seablite · Chenopodiaceae
Symphoricarpos albus (L.) S.F. Blake Native SYAL

common snowberry · Caprifoliaceae
Symphoricarpos albus (L.) S.F. Blake var. albus Native SYALA

common snowberry · Caprifoliaceae
Symphoricarpos albus (L.) S.F. Blake var. laevigatus (Fernald) S.F. Blake Native SYALL

common snowberry · Caprifoliaceae
Symphoricarpos occidentalis Hook. Native SYOC

western snowberry · Caprifoliaceae
Symphoricarpos oreophilus A. Gray Native SYOR2

mountain snowberry · Caprifoliaceae
Symphoricarpos oreophilus A. Gray var. utahensis (Rydb.) A. Nelson Native SYORU

Utah snowberry · Caprifoliaceae
Symphyotrichum ascendens (Lindl.) G.L. Nesom Native SYAS3

western aster · Asteraceae
Symphyotrichum boreale (Torr. & A. Gray) Á. Löve & D. Löve Native SYBO2

northern bog aster · Asteraceae
Symphyotrichum campestre (Nutt.) G.L. Nesom Native SYCA3

western meadow aster · Asteraceae
Symphyotrichum campestre (Nutt.) G.L. Nesom var. campestre Native SYCAC

western meadow aster · Asteraceae
Symphyotrichum eatonii (A. Gray) G.L. Nesom Native SYEA2

Eaton's aster · Asteraceae
Symphyotrichum ericoides (L.) G.L. Nesom Native SYER

white heath aster · Asteraceae
Symphyotrichum ericoides (L.) G.L. Nesom var. stricticaule (Torr. & A. Gray) G.L. Nesom Native SYERS

white heath aster · Asteraceae
Symphyotrichum falcatum (Lindl.) G.L. Nesom Native SYFA

white prairie aster · Asteraceae
Symphyotrichum falcatum (Lindl.) G.L. Nesom var. commutatum (Torr. & A. Gray) G.L. Nesom Native SYFAC

white prairie aster · Asteraceae
Symphyotrichum falcatum (Lindl.) G.L. Nesom var. falcatum Native SYFAF

white prairie aster · Asteraceae
Symphyotrichum foliaceum (Lindl. ex DC.) G.L. Nesom Native SYFO2

alpine leafybract aster · Asteraceae
Symphyotrichum foliaceum (Lindl. ex DC.) G.L. Nesom var. apricum (A. Gray) G.L. Nesom Native SYFOA

alpine leafybract aster · Asteraceae
Symphyotrichum foliaceum (Lindl. ex DC.) G.L. Nesom var. canbyi (A. Gray) G.L. Nesom Native SYFOC

Canby's aster · Asteraceae
Symphyotrichum foliaceum (Lindl. ex DC.) G.L. Nesom var. foliaceum Native SYFOF

alpine leafybract aster · Asteraceae
Symphyotrichum foliaceum (Lindl. ex DC.) G.L. Nesom var. parryi (D.C. Eaton) G.L. Nesom Native SYFOP

Parry's aster · Asteraceae
Symphyotrichum frondosum (Nutt.) G.L. Nesom Native SYFR2

short-rayed alkali aster · Asteraceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom Native SYLA6

white panicle aster · Asteraceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. hesperium (A. Gray) G.L. Nesom Native SYLAH

white panicle aster · Asteraceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. hesperium (A. Gray) G.L. Nesom var. hesperium Native SYLAH6

white panicle aster · Asteraceae
Symphyotrichum spathulatum (Lindl.) G.L. Nesom Native SYSP

western mountain aster · Asteraceae
Symphyotrichum spathulatum (Lindl.) G.L. Nesom var. spathulatum Native SYSPS

western mountain aster · Asteraceae
Synthyris pinnatifida S. Watson Native SYPI

featherleaf kittentails · Scrophulariaceae
Tanacetum balsamita L. Introduced TABA

costmary · Asteraceae
Tanacetum parthenium (L.) Sch. Bip. Introduced TAPA6

feverfew · Asteraceae
Tanacetum vulgare L. Introduced TAVU

common tansy · Asteraceae
Taraxacum eriophorum Rydb. Native TAER2

woolbearing dandelion · Asteraceae
Taraxacum laevigatum (Willd.) DC. Introduced TALA2

rock dandelion · Asteraceae
Taraxacum lyratum (Ledeb.) DC. Native TALY

harp dandelion · Asteraceae
Taraxacum officinale F.H. Wigg. Both TAOF

common dandelion · Asteraceae
Taraxacum officinale F.H. Wigg. ssp. ceratophorum (Ledeb.) Schinz ex Thell. Native TAOFC

common dandelion · Asteraceae
Telesonix heucheriformis Rydb. Native TEHE5

alumroot brookfoam · Saxifragaceae
Tephroseris lindstroemii (Ostenf.) Á. Löve & D. Löve Native TELI6

fuscate groundsel · Asteraceae
Tetradymia canescens DC. Native TECA2

spineless horsebrush · Asteraceae
Tetraneuris acaulis (Pursh) Greene Native TEAC

stemless four-nerve daisy · Asteraceae
Tetraneuris acaulis (Pursh) Greene var. acaulis Native TEACA2

stemless four-nerve daisy · Asteraceae
Tetraneuris acaulis (Pursh) Greene var. caespitosa A. Nelson Native TEACC

caespitose four-nerve daisy · Asteraceae
Tetraneuris grandiflora (Torr. & A. Gray ex A. Gray) K.F. Parker Native TEGR3

graylocks four-nerve daisy · Asteraceae
Thalictrum alpinum L. Native THAL

alpine meadow-rue · Ranunculaceae
Thalictrum fendleri Engelm. ex A. Gray Native THFE

Fendler's meadow-rue · Ranunculaceae
Thalictrum fendleri Engelm. ex A. Gray var. fendleri Native THFEF

Fendler's meadow-rue · Ranunculaceae
Thalictrum occidentale A. Gray Native THOC

western meadow-rue · Ranunculaceae
Thalictrum occidentale A. Gray var. occidentale Native THOCO2

western meadow-rue · Ranunculaceae
Thalictrum sparsiflorum Turcz. ex Fisch. & C.A. Mey. Native THSP

fewflower meadow-rue · Ranunculaceae
Thalictrum sparsiflorum Turcz. ex Fisch. & C.A. Mey. var. saximontanum B. Boivin Native THSPS

fewflower meadow-rue · Ranunculaceae
Thalictrum venulosum Trel. Native THVE

veiny meadow-rue · Ranunculaceae
Thelesperma subnudum A. Gray Native THSU

Navajo tea · Asteraceae
Thelesperma subnudum A. Gray var. marginatum (Rydb.) T.E. Melchert ex Cronquist Native THSUM

Navajo tea · Asteraceae
Thelypodium sagittatum (Nutt. ex Torr. & A. Gray) Endl. ex Walp. Native THSA2

arrow thelypody · Brassicaceae
Thelypodium sagittatum (Nutt. ex Torr. & A. Gray) Endl. ex Walp. ssp. sagittatum Native THSAS

arrow thelypody · Brassicaceae
Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richardson Native THRH

prairie thermopsis · Fabaceae
Thinopyrum intermedium (Host) Barkworth & D.R. Dewey Introduced THIN6

intermediate wheatgrass · Poaceae
Thinopyrum ponticum (Podp.) Z.-W. Liu & R.-C. Wang Introduced THPO7

tall wheatgrass · Poaceae
Thlaspi arvense L. Introduced THAR5

field pennycress · Brassicaceae
Tonestus lyallii (A. Gray) A. Nelson Native TOLY

Lyall's goldenweed · Asteraceae
Torreyochloa pallida (Torr.) Church Native TOPA6

pale false mannagrass · Poaceae
Torreyochloa pallida (Torr.) Church var. pauciflora (J. Presl) J.I. Davis Native TOPAP3

pale false mannagrass · Poaceae
Townsendia alpigena Piper Native TOAL

Wyoming Townsend daisy · Asteraceae
Townsendia alpigena Piper var. alpigena Native TOALA

Wyoming Townsend daisy · Asteraceae
Townsendia condensata Parry ex A. Gray Native TOCO2

cushion Townsend daisy · Asteraceae
Townsendia condensata Parry ex A. Gray var. anomala (Heiser) Dorn Native TOCOA

cushion Townsend daisy · Asteraceae
Townsendia condensata Parry ex A. Gray var. condensata Native TOCOC

cushion Townsend daisy · Asteraceae
Townsendia hookeri Beaman Native TOHO

Hooker's Townsend daisy · Asteraceae
Townsendia nuttallii Dorn Native TONU

Nuttall's Townsend daisy · Asteraceae
Townsendia parryi D.C. Eaton Native TOPA2

Parry's Townsend daisy · Asteraceae
Townsendia spathulata Nutt. Native TOSP

sword Townsend daisy · Asteraceae
Toxicodendron rydbergii (Small ex Rydb.) Greene Native TORY

western poison ivy · Anacardiaceae
Tragopogon dubius Scop. Introduced TRDU

yellow salsify · Asteraceae
Tragopogon porrifolius L. Introduced TRPO

salsify · Asteraceae
Tragopogon pratensis L. Introduced TRPR

Jack-go-to-bed-at-noon · Asteraceae
Tribulus terrestris L. Introduced TRTE

puncturevine · Zygophyllaceae
Trichophorum pumilum (Vahl) Schinz & Thell. Native TRPU18

Rolland's bulrush · Cyperaceae
Trifolium aureum Pollich Introduced TRAU2

golden clover · Fabaceae
Trifolium dasyphyllum Torr. & A. Gray Native TRDA2

alpine clover · Fabaceae
Trifolium dasyphyllum Torr. & A. Gray ssp. dasyphyllum Native TRDAD

alpine clover · Fabaceae
Trifolium dasyphyllum Torr. & A. Gray ssp. uintense (Rydb.) J.M. Gillett Native TRDAU

Uinta clover · Fabaceae
Trifolium haydenii Porter Native TRHA

Hayden's clover · Fabaceae
Trifolium hybridum L. Introduced TRHY

alsike clover · Fabaceae
Trifolium longipes Nutt. Native TRLO

longstalk clover · Fabaceae
Trifolium longipes Nutt. ssp. reflexum (A. Nelson) J.M. Gillett Native TRLOR3

droopflower clover · Fabaceae
Trifolium nanum Torr. Native TRNA2

dwarf clover · Fabaceae
Trifolium parryi A. Gray Native TRPA5

Parry's clover · Fabaceae
Trifolium parryi A. Gray ssp. montanense (Rydb.) J.M. Gillett Native TRPAM

Parry's clover · Fabaceae
Trifolium parryi A. Gray ssp. parryi Native TRPAP

Parry's clover · Fabaceae
Trifolium pratense L. Introduced TRPR2

red clover · Fabaceae
Trifolium repens L. Introduced TRRE3

white clover · Fabaceae
Triglochin maritima L. Native TRMA20

seaside arrowgrass · Juncaginaceae
Triglochin palustris L. Native TRPA28

marsh arrowgrass · Juncaginaceae
Triodanis leptocarpa (Nutt.) Nieuwl. Native TRLE3

slimpod Venus' looking-glass · Campanulaceae
Tripterocalyx micranthus (Torr.) Hook. Native TRMI6

smallflower sandverbena · Nyctaginaceae
Trisetum spicatum (L.) K. Richt. Native TRSP2

spike trisetum · Poaceae
Trisetum wolfii Vasey Native TRWO3

Wolf's trisetum · Poaceae
Trollius laxus Salisb. Native TRLA14

American globeflower · Ranunculaceae
Trollius laxus Salisb. ssp. albiflorus (A. Gray) Á. Löve & D. Löve & Kapoor Native TRLAA2

American globeflower · Ranunculaceae
Typha angustifolia L. Both TYAN

narrowleaf cattail · Typhaceae
Typha latifolia L. Native TYLA

broadleaf cattail · Typhaceae
Ulmus pumila L. Introduced ULPU

Siberian elm · Ulmaceae
Urtica dioica L. Both URDI

stinging nettle · Urticaceae
Urtica dioica L. ssp. gracilis (Aiton) Seland. Native URDIG

California nettle · Urticaceae
Urtica dioica L. ssp. holosericea (Nutt.) Thorne Native URDIH

stinging nettle · Urticaceae
Utricularia macrorhiza Leconte Native UTMA

common bladderwort · Lentibulariaceae
Vaccaria hispanica (Mill.) Rauschert Introduced VAHI2

cow soapwort · Caryophyllaceae
Vaccinium membranaceum Douglas ex Torr. Native VAME

thinleaf huckleberry · Ericaceae
Vaccinium myrtillus L. Native VAMY2

whortleberry · Ericaceae
Vaccinium scoparium Leiberg ex Coville Native VASC

grouse whortleberry · Ericaceae
Vahlodea atropurpurea (Wahlenb.) Fr. ex Hartm. Native VAAT2

mountain hairgrass · Poaceae
Valeriana dioica L. Native VADI

marsh valerian · Valerianaceae
Valeriana dioica L. var. sylvatica S. Watson Native VADIS

woods valerian · Valerianaceae
Valeriana edulis Nutt. ex Torr. & A. Gray Native VAED

tobacco root · Valerianaceae
Valeriana edulis Nutt. ex Torr. & A. Gray var. edulis Native VAEDE

tobacco root · Valerianaceae
Valeriana occidentalis A. Heller Native VAOC2

western valerian · Valerianaceae
Verbascum thapsus L. Introduced VETH

common mullein · Scrophulariaceae
Verbena bracteata Cav. ex Lag. & Rodr. Native VEBR

bigbract verbena · Verbenaceae
Verbena hastata L. Native VEHA2

swamp verbena · Verbenaceae
Verbena hastata L. var. scabra Moldenke Native VEHAS

swamp verbena · Verbenaceae
Verbena stricta Vent. Native VEST

hoary verbena · Verbenaceae
Veronica americana Schwein. ex Benth. Native VEAM2

American speedwell · Scrophulariaceae
Veronica biloba L. Introduced VEBI2

twolobe speedwell · Scrophulariaceae
Veronica officinalis L. Introduced VEOF2

common gypsyweed · Scrophulariaceae
Veronica officinalis L. var. officinalis Introduced VEOFO

common gypsyweed · Scrophulariaceae
Veronica peregrina L. Native VEPE2

neckweed · Scrophulariaceae
Veronica peregrina L. ssp. xalapensis (Kunth) Pennell Native VEPEX2

hairy purslane speedwell · Scrophulariaceae
Veronica serpyllifolia L. Both VESE

thymeleaf speedwell · Scrophulariaceae
Veronica serpyllifolia L. ssp. humifusa (Dicks.) Syme Native VESEH2

brightblue speedwell · Scrophulariaceae
Veronica wormskjoldii Roem. & Schult. Native VEWO2

American alpine speedwell · Scrophulariaceae
Veronica wormskjoldii Roem. & Schult. var. wormskjoldii Native VEWOW

American alpine speedwell · Scrophulariaceae
Viburnum edule (Michx.) Raf. Native VIED

squashberry · Caprifoliaceae
Vicia americana Muhl. ex Willd. Native VIAM

American vetch · Fabaceae
Vicia americana Muhl. ex Willd. ssp. minor (Hook.) C.R. Gunn Native VIAMM3

mat vetch · Fabaceae
Viola adunca Sm. Native VIAD

hookedspur violet · Violaceae
Viola adunca Sm. var. adunca Native VIADA

hookedspur violet · Violaceae
Viola canadensis L. Native VICA4

Canadian white violet · Violaceae
Viola canadensis L. var. rugulosa (Greene) C.L. Hitchc. Native VICAR

creepingroot violet · Violaceae
Viola macloskeyi Lloyd Native VIMA2

small white violet · Violaceae
Viola macloskeyi Lloyd ssp. pallens (Banks ex Ging) M.S. Baker Native VIMAP3

smooth white violet · Violaceae
Viola nephrophylla Greene Native VINE

northern bog violet · Violaceae
Viola nuttallii Pursh Native VINU2

Nuttall's violet · Violaceae
Viola orbiculata Geyer ex Holz. Native VIOR

darkwoods violet · Violaceae
Viola praemorsa Douglas ex Lindl. Native VIPR3

canary violet · Violaceae
Viola purpurea Kellogg Native VIPU4

goosefoot violet · Violaceae
Viola purpurea Kellogg ssp. venosa (S. Watson) M.S. Baker & J.C. Clausen Native VIPUV2

goosefoot violet · Violaceae
Viola vallicola A. Nelson Native VIVA

sagebrush violet · Violaceae
Viola vallicola A. Nelson var. vallicola Native VIVAV

sagebrush violet · Violaceae
Woodsia oregana D.C. Eaton Native WOOR

Oregon cliff fern · Dryopteridaceae
Woodsia scopulina D.C. Eaton Native WOSC

Rocky Mountain woodsia · Dryopteridaceae
Xanthium spinosum L. Introduced XASP2

spiny cocklebur · Asteraceae
Xanthium strumarium L. Native XAST

rough cocklebur · Asteraceae
Xanthium strumarium L. var. canadense (Mill.) Torr. & A. Gray Native XASTC

Canada cocklebur · Asteraceae
Xylorhiza glabriuscula Nutt. Native XYGL

smooth woodyaster · Asteraceae
Yucca glauca Nutt. Native YUGL

soapweed yucca · Agavaceae
Yucca glauca Nutt. var. glauca Native YUGLG2

soapweed yucca · Agavaceae
Zannichellia palustris L. Native ZAPA

horned pondweed · Zannichelliaceae
Zigadenus elegans Pursh Native ZIEL2

mountain deathcamas · Liliaceae
Zigadenus elegans Pursh ssp. elegans Native ZIELE

mountain deathcamas · Liliaceae
Zigadenus venenosus S. Watson Native ZIVE

meadow deathcamas · Liliaceae
Zigadenus venenosus S. Watson var. gramineus (Rydb.) Walsh ex M. Peck Native ZIVEG

grassy deathcamas · Liliaceae
Zizia aptera (A. Gray) Fernald Native ZIAP

meadow zizia · Apiaceae
×Elyhordeum macounii (Vasey) Barkworth & D.R. Dewey [Elymus trachycaulus × Hordeum jubatum] Native ELMA8

Macoun's barley · Poaceae