Powder River County

Montana

FIPS: 30075
Taxa recorded: 431
Of which native: 337
Introduced: 87

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Showing 431 of 431.

Acer negundo L. Native ACNE2

boxelder · Aceraceae
Achillea millefolium L. Both ACMI2

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

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

Indian ricegrass · Poaceae
Acroptilon repens (L.) DC. Introduced ACRE3

hardheads · Asteraceae
Aegilops cylindrica Host Introduced AECY

jointed goatgrass · Poaceae
Agropyron cristatum (L.) Gaertn. Introduced AGCR

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

crested wheatgrass · Poaceae
Agrostis stolonifera L. Introduced AGST2

creeping bentgrass · Poaceae
Allium textile A. Nelson & J.F. Macbr. Native ALTE

textile onion · Liliaceae
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 blitoides S. Watson Introduced AMBL

mat amaranth · Amaranthaceae
Amaranthus retroflexus L. Native AMRE

redroot amaranth · Amaranthaceae
Ambrosia psilostachya DC. Native AMPS

Cuman ragweed · Asteraceae
Ambrosia trifida L. Native AMTR

great ragweed · Asteraceae
Ambrosia trifida L. var. trifida Native AMTRT2

great ragweed · Asteraceae
Antennaria neglecta Greene Native ANNE

field pussytoes · Asteraceae
Antennaria parvifolia Nutt. Native ANPA4

small-leaf pussytoes · Asteraceae
Antennaria rosea Greene Native ANRO2

rosy pussytoes · Asteraceae
Apocynum androsaemifolium L. Native APAN2

spreading dogbane · Apocynaceae
Arabidopsis thaliana (L.) Heynh. Introduced ARTH

mouseear cress · Brassicaceae
Arabis holboellii Hornem. Native ARHO2

Holboell's rockcress · Brassicaceae
Arctostaphylos uva-ursi (L.) Spreng. Native ARUV

kinnikinnick · Ericaceae
Argentina anserina (L.) Rydb. Native ARAN7

silverweed cinquefoil · Rosaceae
Aristida purpurea Nutt. Native ARPU9

purple threeawn · Poaceae
Aristida purpurea Nutt. var. longiseta (Steud.) Vasey Native ARPUL

Fendler threeawn · Poaceae
Arnica fulgens Pursh Native ARFU3

foothill 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 tridentata Nutt. Native ARTR2

big sagebrush · Asteraceae
Asclepias speciosa Torr. Native ASSP

showy milkweed · Asclepiadaceae
Asclepias viridiflora Raf. Native ASVI

green comet milkweed · Asclepiadaceae
Asperugo procumbens L. Introduced ASPR

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

purple milkvetch · Fabaceae
Astragalus barrii Barneby Native ASBA

Barr's milkvetch · Fabaceae
Astragalus crassicarpus Nutt. Native ASCR2

groundplum milkvetch · Fabaceae
Astragalus crassicarpus Nutt. var. crassicarpus Native ASCRC3

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 hyalinus M.E. Jones Native ASHY2

summer 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 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 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
Atriplex confertifolia (Torr. & Frém.) S. Watson Native ATCO

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

Gardner's saltbush · Chenopodiaceae
Balsamorhiza incana Nutt. Native BAIN

hoary balsamroot · Asteraceae
Bassia scoparia (L.) A.J. Scott Introduced BASC5

burningbush · Chenopodiaceae
Besseya wyomingensis (A. Nelson) Rydb. Native BEWY

Wyoming besseya · Scrophulariaceae
Betula papyrifera Marshall Native BEPA

paper birch · Betulaceae
Betula papyrifera Marshall var. papyrifera Native BEPAP

paper birch · Betulaceae
Bolboschoenus maritimus (L.) Palla Native BOMA7

cosmopolitan bulrush · Cyperaceae
Bouteloua curtipendula (Michx.) Torr. Native BOCU

sideoats grama · Poaceae
Bouteloua curtipendula (Michx.) Torr. var. curtipendula Native BOCUC2

sideoats grama · Poaceae
Bouteloua dactyloides (Nutt.) J.T. Columbus Native BODA2

buffalograss · Poaceae
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 arvensis L. Introduced BRAR5

field 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 squarrosus L. Introduced BRSQ2

corn brome · Poaceae
Bromus tectorum L. Introduced BRTE

cheatgrass · Poaceae
Calamovilfa longifolia (Hook.) Scribn. Native CALO

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

prairie sandreed · Poaceae
Calochortus nuttallii Torr. & A. Gray Native CANU3

sego lily · Liliaceae
Calylophus serrulatus (Nutt.) P.H. Raven Native CASE12

yellow sundrops · Onagraceae
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
Campanula rapunculoides L. Introduced CARA

rampion bellflower · Campanulaceae
Campanula rotundifolia L. Native CARO2

bluebell bellflower · Campanulaceae
Cardaria draba (L.) Desv. Introduced CADR

whitetop · Brassicaceae
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 nebrascensis Dewey Native CANE2

Nebraska sedge · Cyperaceae
Carex pellita Muhl. ex Willd. Native CAPE42

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

Sprengel's sedge · Cyperaceae
Castilleja sessiliflora Pursh Native CASE5

downy paintedcup · Scrophulariaceae
Castilleja sulphurea Rydb. Native CASU12

sulphur Indian paintbrush · Scrophulariaceae
Ceanothus herbaceus Raf. Native CEHE

Jersey tea · Rhamnaceae
Centaurea diffusa Lam. Introduced CEDI3

diffuse knapweed · 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
Ceratocephala testiculata (Crantz) Roth Introduced CETE5

curveseed butterwort · Ranunculaceae
Chamaesyce glyptosperma (Engelm.) Small Native CHGL13

ribseed sandmat · Euphorbiaceae
Chenopodium desiccatum A. Nelson Native CHDE

aridland goosefoot · Chenopodiaceae
Chorispora tenella (Pall.) DC. Introduced CHTE2

crossflower · Brassicaceae
Cichorium intybus L. Introduced CIIN

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

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

Canada thistle · Asteraceae
Cirsium flodmanii (Rydb.) Arthur Native CIFL

Flodman's 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
Cleome serrulata Pursh Native CLSE

Rocky Mountain beeplant · Capparaceae
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
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
Cornus canadensis L. Native COCA13

bunchberry dogwood · Cornaceae
Corydalis aurea Willd. Native COAU2

scrambled eggs · Fumariaceae
Crataegus succulenta Schrad. ex Link Native CRSU5

fleshy hawthorn · Rosaceae
Crepis acuminata Nutt. Native CRAC2

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

tapertip hawksbeard · Asteraceae
Crepis occidentalis Nutt. Native CROC

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

buttecandle · Boraginaceae
Cymopterus nivalis S. Watson Native CYNI3

snowline springparsley · Apiaceae
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
Delphinium bicolor Nutt. Native DEBI

little larkspur · Ranunculaceae
Descurainia pinnata (Walter) Britton Native DEPI

western tansymustard · Brassicaceae
Descurainia sophia (L.) Webb ex Prantl Introduced DESO2

herb sophia · Brassicaceae
Dichanthelium oligosanthes (Schult.) Gould Native DIOL

Heller's rosette grass · Poaceae
Dichanthelium oligosanthes (Schult.) Gould var. scribnerianum (Nash) Gould Native DIOLS

Scribner's rosette grass · Poaceae
Distichlis spicata (L.) Greene Native DISP

saltgrass · Poaceae
Draba nemorosa L. Native DRNE

woodland draba · Brassicaceae
Echinacea angustifolia DC. Native ECAN2

narrowleaf purple coneflower · Asteraceae
Echinacea angustifolia DC. var. angustifolia Native ECANA

narrowleaf purple coneflower · Asteraceae
Echinochloa crus-galli (L.) P. Beauv. Introduced ECCR

barnyardgrass · Poaceae
Elaeagnus angustifolia L. Introduced ELAN

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

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

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

Aunt Lucy · Hydrophyllaceae
Elymus canadensis L. Native ELCA4

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

squirreltail · Poaceae
Elymus elymoides (Raf.) Swezey ssp. brevifolius (J.G. Sm.) Barkworth Native ELELB2

squirreltail · Poaceae
Elymus repens (L.) Gould Introduced ELRE4

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

slender wheatgrass · Poaceae
Equisetum arvense L. Native EQAR

field horsetail · Equisetaceae
Equisetum laevigatum A. Braun Native EQLA

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

stinkgrass · 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. 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
Erigeron pumilus Nutt. Native ERPU2

shaggy fleabane · Asteraceae
Eriogonum annuum Nutt. Native ERAN4

annual buckwheat · Polygonaceae
Eriogonum flavum Nutt. Native ERFL4

alpine golden buckwheat · Polygonaceae
Eriogonum pauciflorum Pursh Native ERPA9

fewflower buckwheat · Polygonaceae
Eriogonum pauciflorum Pursh var. pauciflorum Native ERPAP6

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
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 inconspicuum (S. Watson) MacMill. Native ERIN7

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

shy wallflower · Brassicaceae
Escobaria vivipara (Nutt.) Buxbaum Native ESVI2

spinystar · Cactaceae
Escobaria vivipara (Nutt.) Buxbaum var. vivipara Native ESVIV

spinystar · Cactaceae
Euphorbia brachycera Engelm. Native EUBR

horned spurge · Euphorbiaceae
Euphorbia esula L. Introduced EUES

leafy spurge · Euphorbiaceae
Euphorbia spathulata Lam. Native EUSP

warty spurge · Euphorbiaceae
Evolvulus nuttallianus Schult. Native EVNU

shaggy dwarf morning-glory · Convolvulaceae
Fraxinus pennsylvanica Marshall Native FRPE

green ash · Oleaceae
Fritillaria pudica (Pursh) Spreng. Native FRPU2

yellow fritillary · Liliaceae
Gaillardia aristata Pursh Native GAAR

blanketflower · Asteraceae
Galium bifolium S. Watson Native GABI

twinleaf bedstraw · Rubiaceae
Galium boreale L. Native GABO2

northern bedstraw · Rubiaceae
Geranium pusillum L. Introduced GEPU2

small geranium · Geraniaceae
Geum triflorum Pursh Native GETR

old man's whiskers · Rosaceae
Glycyrrhiza lepidota Pursh Native GLLE3

American licorice · Fabaceae
Grindelia squarrosa (Pursh) Dunal Native GRSQ

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

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

broom snakeweed · Asteraceae
Hedeoma drummondii Benth. Native HEDR

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

rough false pennyroyal · Lamiaceae
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
Helianthus annuus L. Native HEAN3

common sunflower · Asteraceae
Helianthus maximiliani Schrad. Native HEMA2

Maximilian sunflower · Asteraceae
Helianthus petiolaris Nutt. Native HEPE

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

prairie sunflower · Asteraceae
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
Heterotheca villosa (Pursh) Shinners Native HEVI4

hairy false goldenaster · Asteraceae
Heterotheca villosa (Pursh) Shinners var. minor (Hook.) Semple Native HEVIM3

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

hairy false goldenaster · Asteraceae
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
Hymenopappus filifolius Hook. Native HYFI

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

manyhead hymenopappus · Asteraceae
Hyoscyamus niger L. Introduced HYNI

black henbane · Solanaceae
Hypericum perforatum L. Introduced HYPE

common St. Johnswort · Clusiaceae
Iva axillaris Pursh Native IVAX

povertyweed · Asteraceae
Juncus bufonius L. Native JUBU

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

toad rush · Juncaceae
Juncus torreyi Coville Native JUTO

Torrey'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
Koeleria macrantha (Ledeb.) Schult. Native KOMA

prairie Junegrass · Poaceae
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
Lamium amplexicaule L. Introduced LAAM

henbit deadnettle · Lamiaceae
Lamium purpureum L. Introduced LAPU2

purple deadnettle · Lamiaceae
Lamium purpureum L. var. purpureum Introduced LAPUP

purple deadnettle · Lamiaceae
Lappula occidentalis (S. Watson) Greene Native LAOC3

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

flatspine stickseed · Boraginaceae
Lesquerella alpina (Nutt.) S. Watson Native LEAL

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

foothill bladderpod · Brassicaceae
Leucocrinum montanum Nutt. ex A. Gray Native LEMO4

common starlily · Liliaceae
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 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 compactum A. Nelson Native LICO3

Wyoming flax · Linaceae
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
Lithospermum incisum Lehm. Native LIIN2

narrowleaf stoneseed · Boraginaceae
Logfia arvensis (L.) Holub Introduced LOAR5

field cottonrose · Asteraceae
Lomatium foeniculaceum (Nutt.) J.M. Coult. & Rose Native LOFO

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

Northern Idaho 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
Lupinus pusillus Pursh Native LUPU

rusty lupine · Fabaceae
Lycium barbarum L. Introduced LYBA4

matrimony vine · Solanaceae
Lygodesmia juncea (Pursh) D. Don ex Hook. Native LYJU

rush skeletonplant · 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
Mahonia repens (Lindl.) G. Don Native MARE11

creeping barberry · Berberidaceae
Maianthemum stellatum (L.) Link Native MAST4

starry false lily of the valley · Liliaceae
Marrubium vulgare L. Introduced MAVU

horehound · Lamiaceae
Melilotus officinalis (L.) Lam. Introduced MEOF

sweetclover · Fabaceae
Mentha arvensis L. Native MEAR4

wild mint · Lamiaceae
Mentzelia decapetala (Pursh ex Sims) Urb. & Gilg ex Gilg Native MEDE2

tenpetal blazingstar · Loasaceae
Mertensia lanceolata (Pursh) DC. Native MELA3

prairie bluebells · Boraginaceae
Mertensia lanceolata (Pursh) DC. var. lanceolata Native MELAL2

prairie bluebells · Boraginaceae
Microsteris gracilis (Hook.) Greene Native MIGR

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

slender phlox · Polemoniaceae
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
Nassella viridula (Trin.) Barkworth Native NAVI4

green needlegrass · Poaceae
Nepeta cataria L. Introduced NECA2

catnip · Lamiaceae
Nothocalais cuspidata (Pursh) Greene Native NOCU

prairie false dandelion · Asteraceae
Oenothera albicaulis Pursh Native OEAL

whitest 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 suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

scarlet beeblossom · Onagraceae
Oenothera villosa Thunb. Native OEVI

hairy evening primrose · Onagraceae
Oenothera villosa Thunb. ssp. villosa Native OEVIV

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
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
Oxytropis lambertii Pursh Native OXLA3

purple locoweed · Fabaceae
Oxytropis lambertii Pursh var. lambertii Native OXLAL2

purple locoweed · Fabaceae
Oxytropis sericea Nutt. Native OXSE

white locoweed · Fabaceae
Packera cana (Hook.) W.A. Weber & Á. Löve Native PACA15

woolly groundsel · Asteraceae
Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

prairie groundsel · Asteraceae
Pascopyrum smithii (Rydb.) Á. Löve Native PASM

western wheatgrass · Poaceae
Pedicularis bracteosa Benth. Native PEBR

bracted lousewort · Scrophulariaceae
Pedicularis bracteosa Benth. var. paysoniana (Pennell) Cronquist Native PEBRP2

Payson's lousewort · Scrophulariaceae
Pediomelum argophyllum (Pursh) J. Grimes Native PEAR6

silverleaf Indian breadroot · Fabaceae
Pediomelum esculentum (Pursh) Rydb. Native PEES

large Indian breadroot · Fabaceae
Penstemon albidus Nutt. Native PEAL2

white penstemon · Scrophulariaceae
Penstemon eriantherus Pursh Native PEER

fuzzytongue penstemon · Scrophulariaceae
Penstemon glaber Pursh Native PEGL3

sawsepal penstemon · Scrophulariaceae
Penstemon glaber Pursh var. glaber Native PEGLG2

sawsepal penstemon · Scrophulariaceae
Penstemon gracilis Nutt. Native PEGR5

lilac penstemon · Scrophulariaceae
Penstemon gracilis Nutt. var. gracilis Native PEGRG3

lilac penstemon · Scrophulariaceae
Penstemon nitidus Douglas ex Benth. Native PENI3

waxleaf penstemon · Scrophulariaceae
Phacelia linearis (Pursh) Holz. Native PHLI

threadleaf phacelia · Hydrophyllaceae
Phalaris arundinacea L. Native PHAR3

reed canarygrass · Poaceae
Phleum pratense L. Introduced PHPR3

timothy · Poaceae
Phlox alyssifolia Greene Native PHAL3

alyssumleaf phlox · Polemoniaceae
Physalis heterophylla Nees Native PHHE5

clammy groundcherry · Solanaceae
Physalis heterophylla Nees var. heterophylla Native PHHEH3

clammy groundcherry · Solanaceae
Pinus ponderosa Lawson & C. Lawson Native PIPO

ponderosa pine · Pinaceae
Pinus ponderosa Lawson & C. Lawson var. scopulorum Engelm. Native PIPOS

ponderosa pine · Pinaceae
Plantago major L. Introduced PLMA2

common plantain · Plantaginaceae
Plantago patagonica Jacq. Native PLPA2

woolly plantain · Plantaginaceae
Poa bulbosa L. Introduced POBU

bulbous 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
Polygala alba Nutt. Native POAL4

white milkwort · Polygalaceae
Polygonum arenastrum Jord. ex Boreau Introduced POAR11

oval-leaf knotweed · Polygonaceae
Polygonum aviculare L. Introduced POAV

prostrate knotweed · Polygonaceae
Polygonum ramosissimum Michx. Native PORA3

bushy knotweed · Polygonaceae
Polygonum ramosissimum Michx. var. ramosissimum Native PORAR

bushy knotweed · Polygonaceae
Populus angustifolia James Native POAN3

narrowleaf 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 arguta Pursh Native POAR7

tall cinquefoil · Rosaceae
Potentilla glandulosa Lindl. Native POGL9

sticky cinquefoil · Rosaceae
Potentilla paradoxa Nutt. Native POPA15

Paradox cinquefoil · Rosaceae
Prunus americana Marshall Native PRAM

American plum · Rosaceae
Prunus virginiana L. Native PRVI

chokecherry · Rosaceae
Prunus virginiana L. var. melanocarpa (A. Nelson) Sarg. Native PRVIM

black chokecherry · Rosaceae
Pseudoroegneria spicata (Pursh) Á. Löve Native PSSP6

bluebunch wheatgrass · Poaceae
Pseudoroegneria spicata (Pursh) Á. Löve ssp. spicata Native PSSPS

bluebunch wheatgrass · Poaceae
Pterospora andromedea Nutt. Native PTAN2

woodland pinedrops · Monotropaceae
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
Quercus macrocarpa Michx. Native QUMA2

bur oak · Fagaceae
Ranunculus glaberrimus Hook. Native RAGL

sagebrush 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 aureum Pursh Native RIAU

golden currant · Grossulariaceae
Ribes aureum Pursh var. villosum DC. Native RIAUV

golden currant · Grossulariaceae
Rorippa curvipes Greene Native ROCU2

bluntleaf yellowcress · Brassicaceae
Rosa arkansana Porter Native ROAR3

prairie rose · Rosaceae
Rosa arkansana Porter var. suffulta (Greene) Cockerell Native ROARS

prairie rose · Rosaceae
Rosa woodsii Lindl. Native ROWO

Woods' rose · Rosaceae
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
Rumex maritimus L. Native RUMA4

golden dock · Polygonaceae
Rumex salicifolius Weinm. Native RUSA

willow dock · Polygonaceae
Rumex salicifolius Weinm. var. mexicanus (Meisn.) C.L. Hitchc. Native RUSAM

Mexican dock · Polygonaceae
Rumex stenophyllus Ledeb. Introduced RUST4

narrowleaf dock · Polygonaceae
Salix amygdaloides Andersson Native SAAM2

peachleaf willow · Salicaceae
Salix exigua Nutt. Native SAEX

narrowleaf willow · Salicaceae
Salix lutea Nutt. Native SALU2

yellow willow · Salicaceae
Salsola tragus L. Introduced SATR12

prickly Russian thistle · Chenopodiaceae
Sarcobatus vermiculatus (Hook.) Torr. Native SAVE4

greasewood · Chenopodiaceae
Schedonnardus paniculatus (Nutt.) Trel. Native SCPA

tumblegrass · Poaceae
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 americanus (Pers.) Volkart ex Schinz & R. Keller Native SCAM6

chairmaker's bulrush · Cyperaceae
Schoenoplectus tabernaemontani (C.C. Gmel.) Palla Native SCTA2

softstem bulrush · Cyperaceae
Senecio integerrimus Nutt. Native SEIN2

lambstongue ragwort · Asteraceae
Senecio vulgaris L. Introduced SEVU

old-man-in-the-Spring · 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
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 loeselii L. Introduced SILO3

small tumbleweed 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
Solanum rostratum Dunal Native SORO

buffalobur nightshade · Solanaceae
Solanum triflorum Nutt. Native SOTR

cutleaf nightshade · Solanaceae
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
Sonchus arvensis L. Introduced SOAR2

field sowthistle · Asteraceae
Sonchus arvensis L. ssp. uliginosus (M. Bieb.) Nyman Introduced SOARU

moist sowthistle · Asteraceae
Spartina pectinata Bosc ex Link Native SPPE

prairie cordgrass · Poaceae
Sphaeralcea coccinea (Nutt.) Rydb. Native SPCO

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

scarlet globemallow · Malvaceae
Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

sand dropseed · Poaceae
Stanleya pinnata (Pursh) Britton Native STPI

desert princesplume · Brassicaceae
Stanleya pinnata (Pursh) Britton var. pinnata Native STPIP

desert princesplume · Brassicaceae
Stanleya viridiflora Nutt. Native STVI

green princesplume · Brassicaceae
Stellaria media (L.) Vill. Introduced STME2

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

common chickweed · Caryophyllaceae
Stenotus armerioides Nutt. Native STAR10

thrift mock goldenweed · Asteraceae
Stenotus armerioides Nutt. var. armerioides Native STARA

thrift mock goldenweed · Asteraceae
Suaeda calceoliformis (Hook.) Moq. Native SUCA2

Pursh seepweed · Chenopodiaceae
Symphoricarpos albus (L.) S.F. Blake Native SYAL

common snowberry · Caprifoliaceae
Symphoricarpos occidentalis Hook. Native SYOC

western snowberry · Caprifoliaceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom Native SYLA6

white panicle aster · Asteraceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. lanceolatum Native SYLAL6

white panicle aster · Asteraceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. lanceolatum var. lanceolatum Native SYLAL4

white panicle aster · Asteraceae
Tanacetum vulgare L. Introduced TAVU

common tansy · Asteraceae
Taraxacum laevigatum (Willd.) DC. Introduced TALA2

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

common dandelion · Asteraceae
Thalictrum venulosum Trel. Native THVE

veiny meadow-rue · Ranunculaceae
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
Thlaspi arvense L. Introduced THAR5

field pennycress · Brassicaceae
Townsendia exscapa (Richardson) Porter Native TOEX2

stemless Townsend daisy · Asteraceae
Townsendia hookeri Beaman Native TOHO

Hooker's Townsend daisy · Asteraceae
Tradescantia occidentalis (Britton) Smyth Native TROC

prairie spiderwort · Commelinaceae
Tradescantia occidentalis (Britton) Smyth var. occidentalis Native TROCO

prairie spiderwort · Commelinaceae
Tragopogon dubius Scop. Introduced TRDU

yellow salsify · Asteraceae
Trifolium pratense L. Introduced TRPR2

red clover · Fabaceae
Trifolium repens L. Introduced TRRE3

white clover · Fabaceae
Triodanis leptocarpa (Nutt.) Nieuwl. Native TRLE3

slimpod Venus' looking-glass · Campanulaceae
Typha latifolia L. Native TYLA

broadleaf cattail · Typhaceae
Urtica dioica L. Both URDI

stinging nettle · Urticaceae
Urtica dioica L. ssp. gracilis (Aiton) Seland. Native URDIG

California nettle · Urticaceae
Vaccaria hispanica (Mill.) Rauschert Introduced VAHI2

cow soapwort · Caryophyllaceae
Verbascum thapsus L. Introduced VETH

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

bigbract verbena · Verbenaceae
Vicia americana Muhl. ex Willd. Native VIAM

American vetch · Fabaceae
Viola nuttallii Pursh Native VINU2

Nuttall's violet · Violaceae
Vulpia octoflora (Walter) Rydb. Native VUOC

sixweeks fescue · Poaceae
Vulpia octoflora (Walter) Rydb. var. octoflora Native VUOCO

sixweeks fescue · Poaceae
Woodsia oregana D.C. Eaton Native WOOR

Oregon cliff fern · Dryopteridaceae
Xanthium strumarium L. Native XAST

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

Canada cocklebur · Asteraceae
Yucca glauca Nutt. Native YUGL

soapweed yucca · Agavaceae
Yucca glauca Nutt. var. glauca Native YUGLG2

soapweed yucca · Agavaceae
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