Sweet Grass County

Showing 472 of 472.

• 
  Achillea millefolium L. Both ACMI2

  common yarrow · Asteraceae
• 
  Acroptilon repens (L.) DC. Introduced ACRE3

  hardheads · Asteraceae
• 
  Agoseris glauca (Pursh) Raf. Native AGGL

  pale agoseris · Asteraceae
• 
  Agrostemma githago L. Introduced AGGI

  common corncockle · Caryophyllaceae
• 
  Agrostis stolonifera L. Introduced AGST2

  creeping bentgrass · Poaceae
• 
  Allium brevistylum S. Watson Native ALBR2

  shortstyle onion · Liliaceae
• 
  Allium cernuum Roth Native ALCE2

  nodding onion · Liliaceae
• 
  Allium geyeri S. Watson Native ALGE

  Geyer's onion · Liliaceae
• 
  Allium textile A. Nelson & J.F. Macbr. Native ALTE

  textile onion · Liliaceae
• 
  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
• 
  Androsace septentrionalis L. Native ANSE4

  pygmyflower rockjasmine · Primulaceae
• 
  Angelica arguta Nutt. Native ANAR3

  Lyall's angelica · Apiaceae
• ⚘
  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 rosea Greene Native ANRO2

  rosy pussytoes · Asteraceae
• 
  Aquilegia flavescens S. Watson Native AQFL

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

  yellow 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
• 
  Arctostaphylos uva-ursi (L.) Spreng. Native ARUV

  kinnikinnick · Ericaceae
• 
  Arenaria congesta Nutt. Native ARCO5

  ballhead sandwort · Caryophyllaceae
• 
  Arenaria hookeri Nutt. Native ARHO4

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

  Hooker's sandwort · Caryophyllaceae
• 
  Argentina anserina (L.) Rydb. Native ARAN7

  silverweed cinquefoil · Rosaceae
• 
  Arnica fulgens Pursh Native ARFU3

  foothill arnica · Asteraceae
• 
  Arnica latifolia Bong. Native ARLA8

  broadleaf arnica · Asteraceae
• 
  Artemisia cana Pursh Native ARCA13

  silver sagebrush · Asteraceae
• 
  Artemisia frigida Willd. Native ARFR4

  prairie sagewort · Asteraceae
• 
  Artemisia ludoviciana Nutt. Both ARLU

  white sagebrush · Asteraceae
• 
  Artemisia michauxiana Besser Native ARMI4

  Michaux's wormwood · Asteraceae
• 
  Artemisia scopulorum A. Gray Native ARSC

  alpine sagebrush · Asteraceae
• 
  Asclepias speciosa Torr. Native ASSP

  showy milkweed · Asclepiadaceae
• 
  Asperugo procumbens L. Introduced ASPR

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

  purple 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 crassicarpus Nutt. Native ASCR2

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

  Drummond's 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 laxmannii Jacq. Native ASLA27

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

  prairie milkvetch · Fabaceae
• 
  Astragalus miser Douglas ex Hook. Native ASMI9

  timber milkvetch · Fabaceae
• 
  Astragalus missouriensis Nutt. Native ASMI10

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

  Missouri 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
• 
  Atriplex rosea L. Introduced ATRO

  tumbling saltweed · Chenopodiaceae
• 
  Balsamorhiza incana Nutt. Native BAIN

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

  arrowleaf balsamroot · Asteraceae
• 
  Barbarea vulgaris W.T. Aiton Introduced BAVU

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

  burningbush · Chenopodiaceae
• 
  Berteroa incana (L.) DC. Introduced BEIN2

  hoary alyssum · Brassicaceae
• 
  Besseya wyomingensis (A. Nelson) Rydb. Native BEWY

  Wyoming besseya · Scrophulariaceae
• 
  Betula nana L. Native BENA

  dwarf birch · Betulaceae
• 
  Brassica nigra (L.) W.D.J. Koch Introduced BRNI

  black mustard · Brassicaceae
• 
  Brickellia eupatorioides (L.) Shinners Native BREU

  false boneset · Asteraceae
• 
  Brickellia eupatorioides (L.) Shinners var. corymbulosa (Torr. & A. Gray) Shinners Native BREUC

  false boneset · Asteraceae
• 
  Bromus hordeaceus L. Introduced BRHO2

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

  soft 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
• 
  Callitriche palustris L. Native CAPA52

  vernal water-starwort · Callitrichaceae
• 
  Calochortus nuttallii Torr. & A. Gray Native CANU3

  sego lily · Liliaceae
• 
  Campanula rapunculoides L. Introduced CARA

  rampion bellflower · Campanulaceae
• 
  Campanula rotundifolia L. Native CARO2

  bluebell 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
• 
  Cardaria draba (L.) Desv. Introduced CADR

  whitetop · Brassicaceae
• 
  Carduus acanthoides L. Introduced CAAC

  spiny plumeless thistle · Asteraceae
• 
  Carduus nutans L. Introduced CANU4

  nodding plumeless thistle · Asteraceae
• 
  Carex aperta Boott Native CAAP3

  Columbian sedge · Cyperaceae
• 
  Carex duriuscula C.A. Mey. Native CADU6

  needleleaf sedge · Cyperaceae
• 
  Carex filifolia Nutt. Native CAFI

  threadleaf sedge · Cyperaceae
• 
  Carex inops L.H. Bailey Native CAIN9

  long-stolon sedge · Cyperaceae
• 
  Carex inops L.H. Bailey ssp. heliophila (Mack.) Crins Native CAINH2

  sun sedge · Cyperaceae
• 
  Carex microptera Mack. Native CAMI7

  smallwing sedge · Cyperaceae
• 
  Carex nebrascensis Dewey Native CANE2

  Nebraska sedge · Cyperaceae
• 
  Carex raynoldsii Dewey Native CARA6

  Raynolds' sedge · Cyperaceae
• 
  Carex sprengelii Dewey ex Spreng. Native CASP7

  Sprengel's 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 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 pallescens (A. Gray) Greenm. Native CAPA25

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

  pale Indian paintbrush · Scrophulariaceae
• 
  Castilleja rhexiifolia Rydb. Native CARH4

  splitleaf Indian paintbrush · Scrophulariaceae
• 
  Ceanothus velutinus Douglas ex Hook. Native CEVE

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

  snowbrush ceanothus · Rhamnaceae
• 
  Centaurea diffusa Lam. Introduced CEDI3

  diffuse knapweed · Asteraceae
• 
  Centaurea solstitialis L. Introduced CESO3

  yellow star-thistle · 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 fontanum Baumg. Introduced CEFO2

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

  big chickweed · Caryophyllaceae
• 
  Chaenactis douglasii (Hook.) Hook. & Arn. Native CHDO

  Douglas' dustymaiden · Asteraceae
• 
  Chamaerhodos erecta (L.) Bunge Native CHER

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

  Nuttall's little rose · Rosaceae
• 
  Chamerion angustifolium (L.) Holub Native CHAN9

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

  fireweed · Onagraceae
• 
  Chenopodium album L. Both CHAL7

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

  lambsquarters · Chenopodiaceae
• 
  Chorispora tenella (Pall.) DC. Introduced CHTE2

  crossflower · Brassicaceae
• 
  Cichorium intybus L. Introduced CIIN

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

  western water hemlock · Apiaceae
• 
  Cirsium arvense (L.) Scop. Introduced CIAR4

  Canada thistle · Asteraceae
• 
  Cirsium undulatum (Nutt.) Spreng. Native CIUN

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

  wavyleaf thistle · Asteraceae
• 
  Claytonia lanceolata Pall. ex Pursh Native CLLA2

  lanceleaf springbeauty · Portulacaceae
• 
  Collomia linearis Nutt. Native COLI2

  tiny trumpet · 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
• 
  Convolvulus arvensis L. Introduced COAR4

  field bindweed · Convolvulaceae
• 
  Cornus sericea L. Native COSE16

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

  redosier dogwood · Cornaceae
• 
  Crepis runcinata (James) Torr. & A. Gray Native CRRU3

  fiddleleaf hawksbeard · Asteraceae
• 
  Cryptantha celosioides (Eastw.) Payson Native CRCE

  buttecandle · Boraginaceae
• 
  Cymopterus nivalis S. Watson Native CYNI3

  snowline springparsley · Apiaceae
• 
  Cynoglossum officinale L. Introduced CYOF

  gypsyflower · Boraginaceae
• 
  Cyperus squarrosus L. Native CYSQ

  bearded flatsedge · Cyperaceae
• 
  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
• 
  Dasiphora fruticosa (L.) Rydb. Native DAFR6

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

  shrubby cinquefoil · Rosaceae
• 
  Daucus carota L. Introduced DACA6

  Queen Anne's lace · Apiaceae
• 
  Delphinium bicolor Nutt. Native DEBI

  little 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
• 
  Descurainia sophia (L.) Webb ex Prantl Introduced DESO2

  herb sophia · Brassicaceae
• 
  Dodecatheon conjugens Greene Native DOCO

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

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

  darkthroat shootingstar · Primulaceae
• 
  Draba incerta Payson Native DRIN2

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

  Yellowstone draba · Brassicaceae
• 
  Draba oligosperma Hook. Native DROL

  fewseed draba · Brassicaceae
• 
  Dracocephalum parviflorum Nutt. Native DRPA2

  American dragonhead · Lamiaceae
• 
  Dysphania botrys (L.) Mosyakin & Clemants Introduced DYBO

  Jerusalem oak goosefoot · Chenopodiaceae
• 
  Echinochloa crus-galli (L.) P. Beauv. Introduced ECCR

  barnyardgrass · Poaceae
• 
  Ellisia nyctelea (L.) L. Native ELNY

  Aunt Lucy · Hydrophyllaceae
• 
  Epilobium brachycarpum C. Presl Native EPBR3

  tall annual willowherb · Onagraceae
• 
  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. nauseosa Native ERNAN3

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

  rubber rabbitbrush · Asteraceae
• 
  Erigeron caespitosus Nutt. Native ERCA2

  tufted fleabane · Asteraceae
• 
  Erigeron compositus Pursh Native ERCO4

  cutleaf daisy · Asteraceae
• 
  Erigeron glabellus Nutt. Native ERGL2

  streamside fleabane · Asteraceae
• 
  Erigeron pumilus Nutt. Native ERPU2

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

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

  prairie fleabane · Asteraceae
• 
  Eriogonum flavum Nutt. Native ERFL4

  alpine golden buckwheat · Polygonaceae
• 
  Eriogonum ovalifolium Nutt. Native EROV

  cushion 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
• 
  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
• 
  Eucephalus engelmannii (D.C. Eaton) Greene Native EUEN

  Engelmann's aster · Asteraceae
• 
  Euphorbia cyparissias L. Introduced EUCY2

  cypress spurge · Euphorbiaceae
• 
  Euphorbia esula L. Introduced EUES

  leafy spurge · Euphorbiaceae
• 
  Gaillardia aristata Pursh Native GAAR

  blanketflower · Asteraceae
• 
  Galeopsis tetrahit L. Introduced GATE2

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

  brittlestem hempnettle · Lamiaceae
• 
  Galium bifolium S. Watson Native GABI

  twinleaf bedstraw · Rubiaceae
• 
  Galium boreale L. Native GABO2

  northern bedstraw · Rubiaceae
• 
  Galium verum L. Introduced GAVE

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

  Yellow Spring bedstraw · Rubiaceae
• 
  Gentiana algida Pall. Native GEAL2

  whitish gentian · Gentianaceae
• 
  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
• 
  Glechoma hederacea L. Introduced GLHE2

  ground ivy · Lamiaceae
• 
  Grindelia squarrosa (Pursh) Dunal Native GRSQ

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

  broom snakeweed · Asteraceae
• 
  Helianthella uniflora (Nutt.) Torr. & A. Gray Native HEUN

  oneflower helianthella · Asteraceae
• 
  Helianthus annuus L. Native HEAN3

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

  Nuttall's sunflower · Asteraceae
• 
  Heracleum maximum W. Bartram Native HEMA80

  common cowparsnip · Apiaceae
• 
  Hesperis matronalis L. Introduced HEMA3

  dames rocket · Brassicaceae
• 
  Heterotheca villosa (Pursh) Shinners Native HEVI4

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

  hairy false goldenaster · Asteraceae
• 
  Hippuris vulgaris L. Native HIVU2

  common mare's-tail · Hippuridaceae
• 
  Hymenopappus filifolius Hook. Native HYFI

  fineleaf hymenopappus · Asteraceae
• 
  Hyoscyamus niger L. Introduced HYNI

  black henbane · Solanaceae
• 
  Hypericum perforatum L. Introduced HYPE

  common St. Johnswort · Clusiaceae
• 
  Ipomopsis spicata (Nutt.) V.E. Grant Native IPSP

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

  spiked ipomopsis · Polemoniaceae
• 
  Isatis tinctoria L. Introduced ISTI

  Dyer's woad · Brassicaceae
• 
  Iva axillaris Pursh Native IVAX

  povertyweed · Asteraceae
• 
  Juncus arcticus Willd. Both JUAR2

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

  mountain rush · Juncaceae
• 
  Juncus bufonius L. Native JUBU

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

  toad rush · Juncaceae
• 
  Juncus drummondii E. Mey. Native JUDR

  Drummond's rush · Juncaceae
• 
  Juncus parryi Engelm. Native JUPA

  Parry's rush · Juncaceae
• 
  Kalmia polifolia Wangenh. Native KAPO

  bog laurel · Ericaceae
• 
  Knautia arvensis (L.) J.M. Coult. Introduced KNAR

  field scabiosa · Dipsacaceae
• 
  Krascheninnikovia lanata (Pursh) A. Meeuse & Smit Native KRLA2

  winterfat · Chenopodiaceae
• 
  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
• 
  Lappula occidentalis (S. Watson) Greene Native LAOC3

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

  flatspine stickseed · Boraginaceae
• 
  Leonurus cardiaca L. Introduced LECA2

  common motherwort · Lamiaceae
• 
  Leonurus cardiaca L. ssp. cardiaca Introduced LECAC7

  common motherwort · Lamiaceae
• 
  Lepidium densiflorum Schrad. Both LEDE

  common pepperweed · Brassicaceae
• 
  Lepidium perfoliatum L. Introduced LEPE2

  clasping pepperweed · Brassicaceae
• 
  Lesquerella alpina (Nutt.) S. Watson Native LEAL

  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
• 
  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
• 
  Liatris punctata Hook. Native LIPU

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

  dotted blazing star · Asteraceae
• 
  Lilium philadelphicum L. Native LIPH

  wood lily · Liliaceae
• 
  Lilium philadelphicum L. var. andinum (Nutt.) Ker Gawl. Native LIPHA

  wood lily · Liliaceae
• 
  Linaria dalmatica (L.) Mill. Introduced LIDA

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

  Dalmatian toadflax · Scrophulariaceae
• 
  Linum perenne L. Introduced LIPE2

  blue flax · Linaceae
• 
  Linum usitatissimum L. Introduced LIUS

  common flax · Linaceae
• 
  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
• 
  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 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
• 
  Lonicera tatarica L. Introduced LOTA

  Tatarian honeysuckle · Caprifoliaceae
• 
  Lupinus argenteus Pursh Native LUAR3

  silvery lupine · Fabaceae
• ⚘
  Lupinus aridus Douglas Native LUAR7

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

  desert lupine · Fabaceae
• 
  Lupinus sericeus Pursh Native LUSE4

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

  silky lupine · Fabaceae
• 
  Lygodesmia juncea (Pursh) D. Don ex Hook. Native LYJU

  rush skeletonplant · Asteraceae
• 
  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
• 
  Maianthemum stellatum (L.) Link Native MAST4

  starry false lily of the valley · Liliaceae
• 
  Matricaria discoidea DC. Introduced MADI6

  disc mayweed · Asteraceae
• 
  Medicago lupulina L. Introduced MELU

  black medick · Fabaceae
• 
  Medicago sativa L. Introduced MESA

  alfalfa · Fabaceae
• 
  Melilotus officinalis (L.) Lam. Introduced MEOF

  sweetclover · Fabaceae
• 
  Mentha arvensis L. Native MEAR4

  wild mint · Lamiaceae
• 
  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
• 
  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
• 
  Mimulus guttatus DC. Native MIGU

  seep monkeyflower · Scrophulariaceae
• 
  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
• 
  Monolepis nuttalliana (Schult.) Greene Native MONU

  Nuttall's povertyweed · Chenopodiaceae
• 
  Musineon divaricatum (Pursh) Raf. Native MUDI

  leafy wildparsley · Apiaceae
• 
  Myosotis asiatica (Vesterg.) Schischkin & Sergievskaja Native MYAS2

  Asian forget-me-not · Boraginaceae
• 
  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 suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

  scarlet beeblossom · 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
• 
  Opuntia polyacantha Haw. Native OPPO

  plains pricklypear · Cactaceae
• 
  Opuntia polyacantha Haw. var. polyacantha Native OPPOP

  hairspine pricklypear · Cactaceae
• 
  Orobanche fasciculata Nutt. Native ORFA

  clustered broomrape · Orobanchaceae
• 
  Orthocarpus luteus Nutt. Native ORLU2

  yellow owl's-clover · Scrophulariaceae
• 
  Oxytropis besseyi (Rydb.) Blank. Native OXBE2

  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 deflexa (Pall.) DC. Native OXDE2

  nodding locoweed · Fabaceae
• 
  Oxytropis lagopus Nutt. Native OXLA2

  haresfoot locoweed · Fabaceae
• 
  Oxytropis sericea Nutt. Native OXSE

  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
• 
  Paronychia sessiliflora Nutt. Native PASE

  creeping nailwort · Caryophyllaceae
• 
  Pastinaca sativa L. Introduced PASA2

  wild parsnip · Apiaceae
• 
  Penstemon albidus Nutt. Native PEAL2

  white penstemon · Scrophulariaceae
• 
  Penstemon eriantherus Pursh Native PEER

  fuzzytongue penstemon · Scrophulariaceae
• 
  Penstemon flavescens Pennell Native PEFL6

  high mountain penstemon · Scrophulariaceae
• 
  Penstemon fruticosus (Pursh) Greene Native PEFR3

  bush penstemon · Scrophulariaceae
• 
  Penstemon fruticosus (Pursh) Greene var. fruticosus Native PEFRF4

  bush penstemon · 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
• 
  Phacelia hastata Douglas ex Lehm. Native PHHA

  silverleaf phacelia · Hydrophyllaceae
• 
  Phacelia hastata Douglas ex Lehm. var. hastata Native PHHAH

  silverleaf phacelia · Hydrophyllaceae
• 
  Phacelia linearis (Pursh) Holz. Native PHLI

  threadleaf phacelia · Hydrophyllaceae
• 
  Phleum pratense L. Introduced PHPR3

  timothy · Poaceae
• 
  Phlox hoodii Richardson Native PHHO

  spiny phlox · Polemoniaceae
• 
  Phlox longifolia Nutt. Native PHLO2

  longleaf phlox · Polemoniaceae
• 
  Phlox longifolia Nutt. ssp. longifolia Native PHLOL2

  longleaf phlox · Polemoniaceae
• 
  Pinus flexilis James Native PIFL2

  limber pine · Pinaceae
• 
  Plantago lanceolata L. Introduced PLLA

  narrowleaf plantain · Plantaginaceae
• 
  Poa annua L. Introduced POAN

  annual bluegrass · Poaceae
• 
  Poa compressa L. Introduced POCO

  Canada bluegrass · Poaceae
• 
  Poa palustris L. Native POPA2

  fowl bluegrass · Poaceae
• 
  Poa pratensis L. Both POPR

  Kentucky bluegrass · Poaceae
• 
  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 aviculare L. Introduced POAV

  prostrate knotweed · Polygonaceae
• 
  Polygonum bistortoides Pursh Native POBI6

  American bistort · Polygonaceae
• 
  Polygonum douglasii Greene Native PODO4

  Douglas' knotweed · Polygonaceae
• 
  Polygonum persicaria L. Introduced POPE3

  spotted ladysthumb · Polygonaceae
• 
  Polygonum sachalinense F. Schmidt ex Maxim. Introduced POSA4

  giant knotweed · Polygonaceae
• 
  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
• 
  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 gracilis Douglas ex Hook. Native POGR9

  slender cinquefoil · Rosaceae
• 
  Potentilla ovina Macoun ex J.M. Macoun Native POOV2

  sheep cinquefoil · Rosaceae
• 
  Potentilla pensylvanica L. Native POPE8

  Pennsylvania cinquefoil · Rosaceae
• 
  Potentilla pensylvanica L. var. pensylvanica Native POPEP5

  Pennsylvania cinquefoil · Rosaceae
• 
  Potentilla recta L. Introduced PORE5

  sulphur cinquefoil · Rosaceae
• 
  Prunella vulgaris L. Native PRVU

  common selfheal · Lamiaceae
• 
  Prunella vulgaris L. ssp. lanceolata (W. Bartram) Hultén Native PRVUL2

  lance selfheal · Lamiaceae
• 
  Pteryxia terebinthina (Hook.) J.M. Coult. & Rose Native PTTE

  turpentine wavewing · Apiaceae
• 
  Pteryxia terebinthina (Hook.) J.M. Coult. & Rose var. foeniculacea (Nutt. ex Torr. & A. Gray) Mathias Native PTTEF

  turpentine wavewing · Apiaceae
• 
  Pulsatilla patens (L.) Mill. Native PUPA5

  eastern pasqueflower · Ranunculaceae
• 
  Pulsatilla patens (L.) Mill. ssp. multifida (Pritz.) Zamels Native PUPAM

  cutleaf anemone · Ranunculaceae
• 
  Ranunculus aquatilis L. Native RAAQ

  white water crowfoot · Ranunculaceae
• 
  Ranunculus eschscholtzii Schltdl. Native RAES

  Eschscholtz's buttercup · Ranunculaceae
• 
  Ranunculus eschscholtzii Schltdl. var. eschscholtzii Native RAESE2

  Eschscholtz's buttercup · Ranunculaceae
• 
  Ranunculus glaberrimus Hook. Native RAGL

  sagebrush buttercup · Ranunculaceae
• 
  Ranunculus gmelinii DC. Native RAGM

  Gmelin's buttercup · Ranunculaceae
• 
  Ranunculus hyperboreus Rottb. Native RAHY2

  high northern buttercup · Ranunculaceae
• 
  Ranunculus uncinatus D. Don ex G. Don Native RAUN

  woodland buttercup · Ranunculaceae
• 
  Ratibida columnifera (Nutt.) Wooton & Standl. Native RACO3

  upright prairie coneflower · Asteraceae
• 
  Rhus trilobata Nutt. Native RHTR

  skunkbush sumac · Anacardiaceae
• 
  Rhus trilobata Nutt. var. trilobata Native RHTRT

  skunkbush sumac · Anacardiaceae
• 
  Ribes cereum Douglas Native RICE

  wax 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
• 
  Rubus parviflorus Nutt. Native RUPA

  thimbleberry · Rosaceae
• 
  Rubus parviflorus Nutt. var. parviflorus Native RUPAP2

  thimbleberry · Rosaceae
• 
  Rumex crispus L. Introduced RUCR

  curly dock · Polygonaceae
• 
  Rumex crispus L. ssp. crispus Introduced RUCRC

  curly dock · Polygonaceae
• 
  Salix arctica Pall. Native SAAR27

  arctic willow · Salicaceae
• 
  Salix bebbiana Sarg. Native SABE2

  Bebb willow · Salicaceae
• 
  Salix scouleriana Barratt ex Hook. Native SASC

  Scouler's willow · Salicaceae
• 
  Salsola tragus L. Introduced SATR12

  prickly Russian thistle · Chenopodiaceae
• ⚘
  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
• 
  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
• 
  Saxifraga bronchialis L. Native SABR6

  yellowdot saxifrage · Saxifragaceae
• 
  Saxifraga bronchialis L. ssp. austromontana (Wiegand) Piper Native SABRA2

  matted saxifrage · Saxifragaceae
• 
  Schoenoplectus tabernaemontani (C.C. Gmel.) Palla Native SCTA2

  softstem bulrush · Cyperaceae
• 
  Scirpus microcarpus J. Presl & C. Presl Native SCMI2

  panicled bulrush · Cyperaceae
• 
  Securigera varia (L.) Lassen Introduced SEVA4

  crownvetch · Fabaceae
• 
  Sedum acre L. Introduced SEAC

  goldmoss stonecrop · Crassulaceae
• 
  Senecio integerrimus Nutt. Native SEIN2

  lambstongue ragwort · Asteraceae
• 
  Senecio vulgaris L. Introduced SEVU

  old-man-in-the-Spring · Asteraceae
• 
  Shepherdia argentea (Pursh) Nutt. Native SHAR

  silver buffaloberry · Elaeagnaceae
• 
  Silene acaulis (L.) Jacq. Native SIAC

  moss campion · Caryophyllaceae
• 
  Silene csereii Baumg. Introduced SICS

  Balkan catchfly · Caryophyllaceae
• 
  Silene dioica (L.) Clairville Introduced SIDI4

  red catchfly · Caryophyllaceae
• 
  Silene latifolia Poir. Introduced SILA21

  bladder campion · Caryophyllaceae
• 
  Silene latifolia Poir. ssp. alba (Mill.) Greuter & Burdet Introduced SILAA3

  bladder campion · Caryophyllaceae
• 
  Silene parryi (S. Watson) C.L. Hitchc. & Maguire Native SIPA4

  Parry's silene · Caryophyllaceae
• 
  Silene vulgaris (Moench) Garcke Introduced SIVU

  maidenstears · Caryophyllaceae
• 
  Sinapis arvensis L. Introduced SIAR4

  charlock mustard · Brassicaceae
• 
  Sinapis arvensis L. ssp. arvensis Introduced SIARA

  wild mustard · Brassicaceae
• 
  Sisyrinchium montanum Greene Native SIMO2

  strict blue-eyed grass · Iridaceae
• 
  Sisyrinchium montanum Greene var. montanum Native SIMOM

  strict blue-eyed grass · Iridaceae
• 
  Solanum dulcamara L. Introduced SODU

  climbing nightshade · Solanaceae
• 
  Solanum dulcamara L. var. dulcamara Introduced SODUD

  climbing nightshade · Solanaceae
• 
  Solidago canadensis L. Native SOCA6

  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 nemoralis Aiton Native SONE

  gray goldenrod · Asteraceae
• 
  Solidago nemoralis Aiton var. longipetiolata (Mack. & Bush) Palmer & Steyerm. Native SONEL

  gray goldenrod · Asteraceae
• 
  Sonchus asper (L.) Hill Introduced SOAS

  spiny sowthistle · Asteraceae
• 
  Sparganium angustifolium Michx. Native SPAN2

  narrowleaf bur-reed · Sparganiaceae
• 
  Sphaeralcea coccinea (Nutt.) Rydb. Native SPCO

  scarlet globemallow · Malvaceae
• 
  Sphaeralcea coccinea (Nutt.) Rydb. ssp. coccinea Native SPCOC

  scarlet globemallow · Malvaceae
• 
  Stachys pilosa Nutt. Native STPI6

  hairy hedgenettle · Lamiaceae
• 
  Stachys pilosa Nutt. var. pilosa Native STPIP5

  hairy hedgenettle · Lamiaceae
• 
  Stellaria media (L.) Vill. Introduced STME2

  common chickweed · Caryophyllaceae
• 
  Stellaria media (L.) Vill. ssp. media Introduced STMEM

  common chickweed · Caryophyllaceae
• 
  Symphoricarpos albus (L.) S.F. Blake Native SYAL

  common 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 ciliolatum (Lindl.) Á. Löve & D. Löve Native SYCI

  Lindley's aster · Asteraceae
• 
  Symphyotrichum eatonii (A. Gray) G.L. Nesom Native SYEA2

  Eaton's aster · Asteraceae
• 
  Symphyotrichum falcatum (Lindl.) G.L. Nesom Native SYFA

  white prairie aster · Asteraceae
• 
  Symphyotrichum falcatum (Lindl.) G.L. Nesom var. falcatum Native SYFAF

  white prairie 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
• 
  Symphyotrichum subspicatum (Nees) G.L. Nesom Native SYSU4

  Douglas aster · Asteraceae
• 
  Symphyotrichum subspicatum (Nees) G.L. Nesom var. subspicatum Native SYSUS

  Douglas aster · Asteraceae
• 
  Symphytum officinale L. Introduced SYOF

  common comfrey · Boraginaceae
• 
  Taraxacum laevigatum (Willd.) DC. Introduced TALA2

  rock dandelion · Asteraceae
• 
  Taraxacum officinale F.H. Wigg. Both TAOF

  common dandelion · 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
• 
  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
• 
  Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richardson Native THRH

  prairie thermopsis · Fabaceae
• 
  Thlaspi arvense L. Introduced THAR5

  field pennycress · Brassicaceae
• 
  Townsendia hookeri Beaman Native TOHO

  Hooker's Townsend daisy · Asteraceae
• 
  Townsendia parryi D.C. Eaton Native TOPA2

  Parry's Townsend daisy · Asteraceae
• 
  Tragopogon dubius Scop. Introduced TRDU

  yellow salsify · Asteraceae
• 
  Tragopogon pratensis L. Introduced TRPR

  Jack-go-to-bed-at-noon · Asteraceae
• 
  Trifolium haydenii Porter Native TRHA

  Hayden's 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 pratense L. Introduced TRPR2

  red clover · Fabaceae
• 
  Trifolium repens L. Introduced TRRE3

  white clover · Fabaceae
• 
  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
• 
  Urtica dioica L. Both URDI

  stinging nettle · Urticaceae
• 
  Utricularia macrorhiza Leconte Native UTMA

  common bladderwort · Lentibulariaceae
• 
  Utricularia minor L. Native UTMI

  lesser bladderwort · Lentibulariaceae
• 
  Vaccinium uliginosum L. Native VAUL

  bog blueberry · Ericaceae
• 
  Verbascum thapsus L. Introduced VETH

  common mullein · Scrophulariaceae
• 
  Verbena bracteata Cav. ex Lag. & Rodr. Native VEBR

  bigbract verbena · Verbenaceae
• 
  Veronica americana Schwein. ex Benth. Native VEAM2

  American speedwell · Scrophulariaceae
• 
  Veronica biloba L. Introduced VEBI2

  twolobe speedwell · Scrophulariaceae
• 
  Veronica wormskjoldii Roem. & Schult. Native VEWO2

  American alpine speedwell · Scrophulariaceae
• 
  Veronica wormskjoldii Roem. & Schult. var. wormskjoldii Native VEWOW

  American alpine speedwell · Scrophulariaceae
• 
  Vicia americana Muhl. ex Willd. Native VIAM

  American vetch · Fabaceae
• 
  Vicia cracca L. Introduced VICR

  bird vetch · Fabaceae
• 
  Vicia cracca L. ssp. cracca Introduced VICRC

  bird vetch · Fabaceae
• 
  Viola canadensis L. Native VICA4

  Canadian white violet · Violaceae
• 
  Viola canadensis L. var. rugulosa (Greene) C.L. Hitchc. Native VICAR

  creepingroot violet · Violaceae
• 
  Viola nuttallii Pursh Native VINU2

  Nuttall's violet · Violaceae
• 
  Viola orbiculata Geyer ex Holz. Native VIOR

  darkwoods violet · Violaceae
• 
  Xanthium strumarium L. Native XAST

  rough cocklebur · Asteraceae
• 
  Xanthium strumarium L. var. canadense (Mill.) Torr. & A. Gray Native XASTC

  Canada cocklebur · Asteraceae
• 
  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