Petroleum County

Montana

FIPS: 30069
Taxa recorded: 356
Of which native: 273
Introduced: 73

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Showing 356 of 356.

Acer glabrum Torr. Native ACGL

Rocky Mountain maple · 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
Agoseris glauca (Pursh) Raf. Native AGGL

pale 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
Allium cernuum Roth Native ALCE2

nodding onion · Liliaceae
Allium textile A. Nelson & J.F. Macbr. Native ALTE

textile onion · Liliaceae
Amaranthus albus L. Introduced AMAL

prostrate pigweed · Amaranthaceae
Ambrosia trifida L. Native AMTR

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

great ragweed · Asteraceae
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. Native AMAL2

Saskatoon serviceberry · Rosaceae
Antennaria parvifolia Nutt. Native ANPA4

small-leaf pussytoes · Asteraceae
Apocynum cannabinum L. Native APCA

Indianhemp · Apocynaceae
Arabis glabra (L.) Bernh. Native ARGL

tower rockcress · Brassicaceae
Arctium minus Bernh. Introduced ARMI2

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

kinnikinnick · Ericaceae
Arenaria hookeri Nutt. Native ARHO4

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

Hooker's sandwort · Caryophyllaceae
Arnica sororia Greene Native ARSO2

twin 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
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 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 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 pectinatus (Douglas ex Hook.) Douglas ex G. Don Native ASPE5

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

woollypod milkvetch · Fabaceae
Astragalus spatulatus Sheldon Native ASSP6

tufted milkvetch · Fabaceae
Astragalus vexilliflexus Sheldon Native ASVE5

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

bentflower milkvetch · Fabaceae
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 rosea L. Introduced ATRO

tumbling saltweed · Chenopodiaceae
Bassia hyssopifolia (Pall.) Kuntz Introduced BAHY

fivehorn smotherweed · Chenopodiaceae
Bassia scoparia (L.) A.J. Scott Introduced BASC5

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

American sloughgrass · Poaceae
Berteroa incana (L.) DC. Introduced BEIN2

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

Wyoming besseya · Scrophulariaceae
Bidens vulgata Greene Native BIVU

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

cosmopolitan bulrush · Cyperaceae
Bouteloua gracilis (Willd. ex Kunth) Lag. ex Griffiths Native BOGR2

blue grama · Poaceae
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
Calochortus nuttallii Torr. & A. Gray Native CANU3

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

yellow sundrops · Onagraceae
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
Campanula rotundifolia L. Native CARO2

bluebell bellflower · Campanulaceae
Capsella bursa-pastoris (L.) Medik. Introduced CABU2

shepherd's purse · Brassicaceae
Cardaria draba (L.) Desv. Introduced CADR

whitetop · Brassicaceae
Carex brevior (Dewey) Mack. Native CABR10

shortbeak sedge · Cyperaceae
Carex duriuscula C.A. Mey. Native CADU6

needleleaf sedge · Cyperaceae
Carex filifolia Nutt. Native CAFI

threadleaf sedge · Cyperaceae
Castilleja sessiliflora Pursh Native CASE5

downy paintedcup · Scrophulariaceae
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
Chaenactis douglasii (Hook.) Hook. & Arn. Native CHDO

Douglas' dustymaiden · Asteraceae
Chamaesyce glyptosperma (Engelm.) Small Native CHGL13

ribseed sandmat · Euphorbiaceae
Chenopodium album L. Both CHAL7

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

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

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

mapleleaf goosefoot · Chenopodiaceae
Chrysothamnus viscidiflorus (Hook.) Nutt. Native CHVI8

yellow rabbitbrush · Asteraceae
Cichorium intybus L. Introduced CIIN

chicory · Asteraceae
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
Clematis ligusticifolia Nutt. Native CLLI2

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

western white clematis · Ranunculaceae
Cleome serrulata Pursh Native CLSE

Rocky Mountain beeplant · Capparaceae
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
Conyza canadensis (L.) Cronquist Native COCA5

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

Canadian horseweed · Asteraceae
Coreopsis tinctoria Nutt. Native COTI3

golden tickseed · Asteraceae
Cornus sericea L. Native COSE16

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

redosier dogwood · Cornaceae
Crataegus douglasii Lindl. Native CRDO2

black 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 acaulis (Pursh) Raf. Native CYAC

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

plains springparsley · Apiaceae
Cynoglossum officinale L. Introduced CYOF

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

brittle bladderfern · Dryopteridaceae
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
Delphinium bicolor Nutt. Native DEBI

little larkspur · Ranunculaceae
Descurainia sophia (L.) Webb ex Prantl Introduced DESO2

herb sophia · Brassicaceae
Distichlis spicata (L.) Greene Native DISP

saltgrass · Poaceae
Dysphania botrys (L.) Mosyakin & Clemants Introduced DYBO

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

barnyardgrass · Poaceae
Eleocharis macrostachya Britton Native ELMA5

pale spikerush · Cyperaceae
Elymus canadensis L. Native ELCA4

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

slender 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 divergens Torr. & A. Gray Native ERDI4

spreading fleabane · 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
Erysimum capitatum (Douglas ex Hook.) Greene Native ERCA14

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

sanddune wallflower · Brassicaceae
Euphorbia cyparissias L. Introduced EUCY2

cypress spurge · Euphorbiaceae
Euphorbia esula L. Introduced EUES

leafy spurge · Euphorbiaceae
Gaillardia aristata Pursh Native GAAR

blanketflower · Asteraceae
Galium boreale L. Native GABO2

northern bedstraw · Rubiaceae
Geranium bicknellii Britton Native GEBI2

Bicknell's cranesbill · Geraniaceae
Glycyrrhiza lepidota Pursh Native GLLE3

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

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

broom snakeweed · Asteraceae
Hedeoma hispida Pursh Native HEHI

rough false pennyroyal · Lamiaceae
Helianthus annuus L. Native HEAN3

common sunflower · Asteraceae
Helianthus petiolaris Nutt. Native HEPE

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

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

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

hairy false goldenaster · Asteraceae
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
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
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
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
Lappula occidentalis (S. Watson) Greene Native LAOC3

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

flatspine stickseed · Boraginaceae
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
Liatris punctata Hook. Native LIPU

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

dotted blazing star · Asteraceae
Linum perenne L. Introduced LIPE2

blue flax · Linaceae
Lomatium foeniculaceum (Nutt.) J.M. Coult. & Rose Native LOFO

desert biscuitroot · Apiaceae
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 pusillus Pursh Native LUPU

rusty 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
Machaeranthera pinnatifida (Hook.) Shinners Native MAPI

lacy tansyaster · Asteraceae
Machaeranthera pinnatifida (Hook.) Shinners ssp. pinnatifida Native MAPIP

lacy tansyaster · Asteraceae
Machaeranthera pinnatifida (Hook.) Shinners ssp. pinnatifida var. pinnatifida Native MAPIP4

lacy 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
Malva parviflora L. Introduced MAPA5

cheeseweed mallow · Malvaceae
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
Melilotus officinalis (L.) Lam. Introduced MEOF

sweetclover · Fabaceae
Mentha arvensis L. Native MEAR4

wild mint · Lamiaceae
Mirabilis linearis (Pursh) Heimerl Native MILI3

narrowleaf four o'clock · Nyctaginaceae
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
Morus alba L. Introduced MOAL

white mulberry · Moraceae
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 flava (A. Nelson) Garrett Native OEFL

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

yellow 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
Opuntia polyacantha Haw. Native OPPO

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

hairspine pricklypear · Cactaceae
Orobanche ludoviciana Nutt. Native ORLU

Louisiana broomrape · Orobanchaceae
Orobanche ludoviciana Nutt. ssp. ludoviciana Native ORLUL2

Louisiana broomrape · Orobanchaceae
Oxytropis besseyi (Rydb.) Blank. Native OXBE2

Bessey's locoweed · Fabaceae
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
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 nitidus Douglas ex Benth. Native PENI3

waxleaf 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
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
Phleum pratense L. Introduced PHPR3

timothy · Poaceae
Phlox hoodii Richardson Native PHHO

spiny phlox · Polemoniaceae
Physocarpus malvaceus (Greene) Kuntze Native PHMA5

mallow ninebark · Rosaceae
Picradeniopsis oppositifolia (Nutt.) Rydb. ex Britton Native PIOP

oppositeleaf bahia · Asteraceae
Pinus ponderosa Lawson & C. Lawson Native PIPO

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

ponderosa pine · Pinaceae
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 major L. Introduced PLMA2

common plantain · Plantaginaceae
Plantago patagonica Jacq. Native PLPA2

woolly plantain · Plantaginaceae
Poa compressa L. Introduced POCO

Canada bluegrass · Poaceae
Poa palustris L. Native POPA2

fowl 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
Polygonum aviculare L. Introduced POAV

prostrate knotweed · 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. engelmannii (Greene) Kartesz & Gandhi Native PODOE

Engelmann's knotweed · Polygonaceae
Polygonum lapathifolium L. Native POLA4

curlytop knotweed · Polygonaceae
Polygonum pensylvanicum L. Native POPE2

Pennsylvania smartweed · Polygonaceae
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 gracilis Douglas ex Hook. Native POGR9

slender cinquefoil · Rosaceae
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
Pseudoroegneria spicata (Pursh) Á. Löve Native PSSP6

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

bluebunch wheatgrass · Poaceae
Psoralidium tenuiflorum (Pursh) Rydb. Native PSTE5

slimflower scurfpea · Fabaceae
Puccinellia distans (Jacq.) Parl. Both PUDI

weeping alkaligrass · Poaceae
Puccinellia distans (Jacq.) Parl. ssp. distans Introduced PUDID

weeping alkaligrass · Poaceae
Ranunculus cymbalaria Pursh Native RACY

alkali 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
Ribes cereum Douglas Native RICE

wax currant · Grossulariaceae
Ribes cereum Douglas var. pedicellare W.H. Brewer & S. Watson Native RICEP

whisky currant · Grossulariaceae
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 idaeus L. Both RUID

American red raspberry · Rosaceae
Rubus leucodermis Douglas ex Torr. & A. Gray Native RULE

whitebark raspberry · Rosaceae
Rubus leucodermis Douglas ex Torr. & A. Gray var. leucodermis Native RULEL

whitebark raspberry · Rosaceae
Rumex acetosella L. Introduced RUAC3

common sheep sorrel · 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 salicifolius Weinm. Native RUSA

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

Mexican dock · Polygonaceae
Salix interior Rowlee Native SAIN3

sandbar willow · Salicaceae
Salsola tragus L. Introduced SATR12

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

greasewood · Chenopodiaceae
Schoenoplectus americanus (Pers.) Volkart ex Schinz & R. Keller Native SCAM6

chairmaker's bulrush · Cyperaceae
Senecio integerrimus Nutt. Native SEIN2

lambstongue 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 canadensis (L.) Nutt. Native SHCA

russet buffaloberry · Elaeagnaceae
Silene antirrhina L. Native SIAN2

sleepy silene · Caryophyllaceae
Silene latifolia Poir. Introduced SILA21

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

bladder campion · Caryophyllaceae
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
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 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
Solidago mollis Bartlett Native SOMO

velvety goldenrod · Asteraceae
Solidago mollis Bartlett var. mollis Native SOMOM

velvety goldenrod · Asteraceae
Sonchus arvensis L. Introduced SOAR2

field sowthistle · Asteraceae
Spartina gracilis Trin. Native SPGR

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

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

scarlet globemallow · Malvaceae
Spiraea lucida Douglas ex Greene Native SPLU5

shinyleaf spirea · Rosaceae
Sporobolus airoides (Torr.) Torr. Native SPAI

alkali sacaton · Poaceae
Stellaria media (L.) Vill. Introduced STME2

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

common chickweed · Caryophyllaceae
Stenotus acaulis (Nutt.) Nutt. Native STAC

stemless mock goldenweed · Asteraceae
Symphoricarpos albus (L.) S.F. Blake Native SYAL

common snowberry · Caprifoliaceae
Symphoricarpos occidentalis Hook. Native SYOC

western snowberry · Caprifoliaceae
Symphyotrichum ascendens (Lindl.) G.L. Nesom Native SYAS3

western 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
Tanacetum vulgare L. Introduced TAVU

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

prairie thermopsis · Fabaceae
Thlaspi arvense L. Introduced THAR5

field pennycress · Brassicaceae
Tragopogon dubius Scop. Introduced TRDU

yellow salsify · Asteraceae
Trifolium aureum Pollich Introduced TRAU2

golden clover · Fabaceae
Trifolium hybridum L. Introduced TRHY

alsike clover · Fabaceae
Triglochin maritima L. Native TRMA20

seaside arrowgrass · Juncaginaceae
Triodanis perfoliata (L.) Nieuwl. Native TRPE4

clasping Venus' looking-glass · Campanulaceae
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
Vicia sativa L. Introduced VISA

garden vetch · Fabaceae
Vicia sativa L. ssp. nigra (L.) Ehrh. Introduced VISAN2

garden vetch · Fabaceae
Viola nuttallii Pursh Native VINU2

Nuttall's violet · Violaceae
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