Valley County

Montana

FIPS: 30105
Taxa recorded: 843
Of which native: 687
Introduced: 138

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Showing 843 of 843.

Acer negundo L. Native ACNE2

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

boxelder · Aceraceae
Achillea millefolium L. Both ACMI2

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

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

Indian ricegrass · Poaceae
Achnatherum nelsonii (Scribn.) Barkworth Native ACNE9

Columbia needlegrass · Poaceae
Achnatherum nelsonii (Scribn.) Barkworth ssp. nelsonii Native ACNEN2

Columbia needlegrass · Poaceae
Acroptilon repens (L.) DC. Introduced ACRE3

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

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

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

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

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

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

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

desert wheatgrass · Poaceae
Agropyron fragile (Roth) P. Candargy Introduced AGFR

Siberian wheatgrass · Poaceae
Agrostis scabra Willd. Native AGSC5

rough bentgrass · Poaceae
Agrostis stolonifera L. Introduced AGST2

creeping bentgrass · Poaceae
Alisma gramineum Lej. Native ALGR

narrowleaf water plantain · Alismataceae
Alisma triviale Pursh Native ALTR7

northern water plantain · Alismataceae
Allium acuminatum Hook. Native ALAC4

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

textile onion · Liliaceae
Almutaster pauciflorus (Nutt.) Á. Löve & D. Löve Native ALPA14

alkali marsh aster · Asteraceae
Alopecurus aequalis Sobol. Native ALAE

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

shortawn foxtail · Poaceae
Alopecurus arundinaceus Poir. Introduced ALAR

creeping meadow foxtail · Poaceae
Alopecurus carolinianus Walter Native ALCA4

Carolina foxtail · Poaceae
Alopecurus geniculatus L. Introduced ALGE2

water foxtail · Poaceae
Alyssum desertorum Stapf Introduced ALDE

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

desert madwort · Brassicaceae
Amaranthus albus L. Introduced AMAL

prostrate pigweed · Amaranthaceae
Amaranthus blitoides S. Watson Introduced AMBL

mat amaranth · Amaranthaceae
Amaranthus californicus (Moq.) S. Watson Native AMCA

California amaranth · Amaranthaceae
Amaranthus retroflexus L. Native AMRE

redroot amaranth · Amaranthaceae
Ambrosia artemisiifolia L. Both AMAR2

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

annual ragweed · Asteraceae
Ambrosia psilostachya DC. Native AMPS

Cuman ragweed · Asteraceae
Ambrosia trifida L. Native AMTR

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

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

Saskatoon serviceberry · Rosaceae
Ammannia robusta Heer & Regel Native AMRO3

grand redstem · Lythraceae
Anagallis minima (L.) Krause Native ANMI4

chaffweed · Primulaceae
Androsace occidentalis Pursh Native ANOC2

western rockjasmine · Primulaceae
Androsace septentrionalis L. Native ANSE4

pygmyflower rockjasmine · Primulaceae
Anemone multifida Poir. Native ANMU

Pacific anemone · Ranunculaceae
Anemone multifida Poir. var. multifida Native ANMUM3

Pacific anemone · Ranunculaceae
Antennaria howellii Greene Native ANHO

Howell's pussytoes · Asteraceae
Antennaria howellii Greene ssp. petaloidea (Fernald) Bayer Native ANHOP

small pussytoes · Asteraceae
Antennaria microphylla Rydb. Native ANMI3

littleleaf pussytoes · Asteraceae
Antennaria parvifolia Nutt. Native ANPA4

small-leaf pussytoes · Asteraceae
Antennaria rosea Greene Native ANRO2

rosy pussytoes · Asteraceae
Apocynum cannabinum L. Native APCA

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

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

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

creamflower rockcress · Brassicaceae
Arabis holboellii Hornem. Native ARHO2

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

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

second rockcress · Brassicaceae
Arabis ×divaricarpa A. Nelson (pro sp.) [drummondii × holboellii] Native ARDI2

spreadingpod 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
Armoracia rusticana G. Gaertn., B. Mey. & Scherb. Introduced ARRU4

horseradish · Brassicaceae
Arnica fulgens Pursh Native ARFU3

foothill arnica · Asteraceae
Arnica sororia Greene Native ARSO2

twin arnica · Asteraceae
Artemisia absinthium L. Introduced ARAB3

absinthium · Asteraceae
Artemisia biennis Willd. Both ARBI2

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

biennial wormwood · Asteraceae
Artemisia campestris L. Native ARCA12

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

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

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

field sagewort · Asteraceae
Artemisia cana Pursh Native ARCA13

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

silver sagebrush · Asteraceae
Artemisia dracunculus L. Native ARDR4

tarragon · Asteraceae
Artemisia frigida Willd. Native ARFR4

prairie sagewort · Asteraceae
Artemisia longifolia Nutt. Native ARLO7

longleaf wormwood · Asteraceae
Artemisia ludoviciana Nutt. Both ARLU

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

white sagebrush · Asteraceae
Artemisia tridentata Nutt. Native ARTR2

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

Wyoming big sagebrush · Asteraceae
Asclepias pumila (A. Gray) Vail Native ASPU

plains milkweed · Asclepiadaceae
Asclepias speciosa Torr. Native ASSP

showy milkweed · Asclepiadaceae
Asclepias verticillata L. Native ASVE

whorled milkweed · Asclepiadaceae
Asclepias viridiflora Raf. Native ASVI

green comet milkweed · Asclepiadaceae
Asparagus officinalis L. Introduced ASOF

garden asparagus · Liliaceae
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 cibarius Sheldon Native ASCI2

browse milkvetch · Fabaceae
Astragalus crassicarpus Nutt. Native ASCR2

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

groundplum milkvetch · Fabaceae
Astragalus crassicarpus Nutt. var. paysonii (E.H. Kelso) Barneby Native ASCRP

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

Drummond's milkvetch · Fabaceae
Astragalus flexuosus Douglas ex G. Don Native ASFL2

flexile milkvetch · Fabaceae
Astragalus flexuosus Douglas ex G. Don var. flexuosus Native ASFLF

flexile milkvetch · Fabaceae
Astragalus gilviflorus Sheldon Native ASGI5

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

plains milkvetch · Fabaceae
Astragalus kentrophyta A. Gray Native ASKE

spiny milkvetch · Fabaceae
Astragalus kentrophyta A. Gray var. kentrophyta Native ASKEK

spiny milkvetch · Fabaceae
Astragalus laxmannii Jacq. Native ASLA27

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

prairie milkvetch · Fabaceae
Astragalus lotiflorus Hook. Native ASLO4

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

woollypod milkvetch · Fabaceae
Astragalus spatulatus Sheldon Native ASSP6

tufted milkvetch · Fabaceae
Astragalus tenellus Pursh Native ASTE5

looseflower milkvetch · Fabaceae
Astragalus vexilliflexus Sheldon Native ASVE5

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

bentflower milkvetch · Fabaceae
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 confertifolia (Torr. & Frém.) S. Watson Native ATCO

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

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

garden orache · Chenopodiaceae
Atriplex patula L. Introduced ATPA4

spear saltbush · Chenopodiaceae
Atriplex powellii S. Watson Native ATPO2

Powell's saltweed · Chenopodiaceae
Avenula hookeri (Scribn.) Holub Native AVHO3

spikeoat · Poaceae
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
Besseya wyomingensis (A. Nelson) Rydb. Native BEWY

Wyoming besseya · Scrophulariaceae
Betula occidentalis Hook. Native BEOC2

water birch · Betulaceae
Bidens cernua L. Native BICE

nodding beggartick · Asteraceae
Bidens vulgata Greene Native BIVU

big devils beggartick · Asteraceae
Bolboschoenus fluviatilis (Torr.) Soják Native BOFL3

river bulrush · Cyperaceae
Bolboschoenus maritimus (L.) Palla Native BOMA7

cosmopolitan bulrush · Cyperaceae
Borago officinalis L. Introduced BOOF

common borage · Boraginaceae
Bouteloua dactyloides (Nutt.) J.T. Columbus Native BODA2

buffalograss · Poaceae
Bouteloua gracilis (Willd. ex Kunth) Lag. ex Griffiths Native BOGR2

blue grama · Poaceae
Brassica nigra (L.) W.D.J. Koch Introduced BRNI

black mustard · Brassicaceae
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 inermis Leyss. ssp. pumpellianus (Scribn.) Wagnon Native BRINP

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

Pumpelly's brome · Poaceae
Bromus racemosus L. Introduced BRRA2

bald brome · Poaceae
Bromus squarrosus L. Introduced BRSQ2

corn brome · Poaceae
Bromus tectorum L. Introduced BRTE

cheatgrass · Poaceae
Calamagrostis montanensis Scribn. ex Vasey Native CAMO

plains reedgrass · Poaceae
Calamagrostis stricta (Timm) Koeler Native CAST36

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

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

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

prairie sandreed · Poaceae
Callitriche hermaphroditica L. Native CAHE2

northern water-starwort · Callitrichaceae
Callitriche heterophylla Pursh Native CAHE3

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

twoheaded water-starwort · Callitrichaceae
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 rapunculoides L. Introduced CARA

rampion bellflower · Campanulaceae
Campanula rotundifolia L. Native CARO2

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

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

Siberian peashrub · Fabaceae
Cardaria draba (L.) Desv. Introduced CADR

whitetop · Brassicaceae
Carex atherodes Spreng. Native CAAT2

wheat sedge · Cyperaceae
Carex aurea Nutt. Native CAAU3

golden sedge · Cyperaceae
Carex bebbii Olney ex Fernald Native CABE2

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

shortbeak sedge · Cyperaceae
Carex douglasii Boott Native CADO2

Douglas' 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 obtusata Lilj. Native CAOB4

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

woolly sedge · Cyperaceae
Carex praegracilis W. Boott Native CAPR5

clustered field sedge · Cyperaceae
Carex rossii Boott Native CARO5

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

Sprengel's 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
Cerastium brachypodum (Engelm. ex A. Gray) B.L. Rob. Native CEBR3

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

curveseed butterwort · Ranunculaceae
Ceratophyllum demersum L. Native CEDE4

coon's tail · Ceratophyllaceae
Chaenactis douglasii (Hook.) Hook. & Arn. Native CHDO

Douglas' dustymaiden · Asteraceae
Chaenactis douglasii (Hook.) Hook. & Arn. var. douglasii Native CHDOD

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

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

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

ribseed sandmat · Euphorbiaceae
Chamaesyce serpens (Kunth) Small Native CHSE4

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

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

fireweed · Onagraceae
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
Chenopodium berlandieri Moq. Native CHBE4

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

Zschack's goosefoot · Chenopodiaceae
Chenopodium desiccatum A. Nelson Native CHDE

aridland goosefoot · Chenopodiaceae
Chenopodium fremontii S. Watson Native CHFR3

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

oakleaf goosefoot · Chenopodiaceae
Chenopodium pratericola Rydb. Native CHPR5

desert goosefoot · Chenopodiaceae
Chenopodium salinum Standl. Native CHSA2

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

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

crossflower · Brassicaceae
Cicuta maculata L. Native CIMA2

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

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

Canada thistle · Asteraceae
Cirsium canescens Nutt. Native CICA11

prairie 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
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
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
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
Cotoneaster lucidus Schltdl. Introduced COLU5

shiny cotoneaster · Rosaceae
Crepis atribarba A. Heller Native CRAT

slender hawksbeard · Asteraceae
Crepis modocensis Greene Native CRMO4

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

Modoc hawksbeard · Asteraceae
Crepis occidentalis Nutt. Native CROC

largeflower hawksbeard · Asteraceae
Crepis occidentalis Nutt. ssp. costata (A. Gray) Babc. & Stebbins Native CROCC2

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

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

fiddleleaf hawksbeard · Asteraceae
Crepis tectorum L. Introduced CRTE3

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

buttecandle · Boraginaceae
Cryptantha minima Rydb. Native CRMI5

little cryptantha · Boraginaceae
Cryptantha spiculifera (Piper) Payson Native CRSP4

Snake River cryptantha · Boraginaceae
Cuscuta approximata Bab. Introduced CUAP2

alfalfa dodder · Cuscutaceae
Cuscuta coryli Engelm. Native CUCO3

hazel dodder · Cuscutaceae
Cuscuta pentagona Engelm. Native CUPE3

fiveangled dodder · Cuscutaceae
Cuscuta pentagona Engelm. var. pentagona Native CUPEP2

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

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

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

plains springparsley · Apiaceae
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
Danthonia unispicata (Thurb.) Munro ex Macoun Native DAUN

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

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

shrubby cinquefoil · Rosaceae
Delphinium bicolor Nutt. Native DEBI

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

little larkspur · Ranunculaceae
Delphinium ×burkei Greene (pro sp.) [depauperatum × nuttallianum] Native DEBU

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

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

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

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

western tansymustard · Brassicaceae
Descurainia pinnata (Walter) Britton ssp. brachycarpa (Richardson) Detling Native DEPIB

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

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

saltgrass · Poaceae
Dodecatheon pulchellum (Raf.) Merr. Native DOPU

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

darkthroat shootingstar · Primulaceae
Draba nemorosa L. Native DRNE

woodland draba · Brassicaceae
Draba reptans (Lam.) Fernald Native DRRE2

Carolina draba · Brassicaceae
Dyssodia papposa (Vent.) Hitchc. Native DYPA

fetid marigold · Asteraceae
Echinacea angustifolia DC. Native ECAN2

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

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

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

rough barnyardgrass · Poaceae
Elaeagnus angustifolia L. Introduced ELAN

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

silverberry · Elaeagnaceae
Elatine rubella Rydb. Native ELRU

southwestern waterwort · Elatinaceae
Eleocharis acicularis (L.) Roem. & Schult. Native ELAC

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

needle spikerush · Cyperaceae
Eleocharis macrostachya Britton Native ELMA5

pale spikerush · Cyperaceae
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
Elodea canadensis Michx. Native ELCA7

Canadian waterweed · Hydrocharitaceae
Elymus albicans (Scribn. & J.G. Sm.) Á. Löve Native ELAL7

Montana wheatgrass · Poaceae
Elymus canadensis L. Native ELCA4

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

squirreltail · Poaceae
Elymus elymoides (Raf.) Swezey ssp. elymoides Native ELELE

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

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

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

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

slender wheatgrass · Poaceae
Elymus trachycaulus (Link) Gould ex Shinners ssp. subsecundus (Link) Á. Löve & D. Löve Native ELTRS

slender wheatgrass · Poaceae
Elymus trachycaulus (Link) Gould ex Shinners ssp. trachycaulus Native ELTRT

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

Poaceae
Endolepis dioica (Nutt.) Standl. Native ENDI

Suckley's endolepis · Chenopodiaceae
Epilobium brachycarpum C. Presl Native EPBR3

tall annual willowherb · Onagraceae
Epilobium ciliatum Raf. Native EPCI

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

fringed willowherb · Onagraceae
Epilobium glaberrimum Barbey Native EPGL

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

glaucus willowherb · Onagraceae
Epilobium leptophyllum Raf. Native EPLE2

bog willowherb · Onagraceae
Epilobium pygmaeum (Speg.) Hoch & P.H. Raven Native EPPY4

smooth spike-primrose · Onagraceae
Equisetum arvense L. Native EQAR

field horsetail · Equisetaceae
Equisetum laevigatum A. Braun Native EQLA

smooth horsetail · Equisetaceae
Equisetum ×mackaii (Newm.) Brichan [hyemale × variegatum] Native EQMA

horsetail · Equisetaceae
Equisetum ×nelsonii (A.A. Eaton) Schaffn. (pro sp.) [laevigatum × variegatum] Native EQNE

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

stinkgrass · Poaceae
Eremopyrum triticeum (Gaertn.) Nevski Introduced ERTR13

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

rubber rabbitbrush · Asteraceae
Ericameria nauseosa (Pall. ex Pursh) G.L. Nesom & Baird ssp. 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 caespitosus Nutt. Native ERCA2

tufted fleabane · Asteraceae
Erigeron compositus Pursh Native ERCO4

cutleaf daisy · Asteraceae
Erigeron corymbosus Nutt. Native ERCO5

longleaf fleabane · Asteraceae
Erigeron glabellus Nutt. Native ERGL2

streamside fleabane · Asteraceae
Erigeron glabellus Nutt. var. glabellus Native ERGLG

streamside fleabane · Asteraceae
Erigeron glabellus Nutt. var. pubescens Hook. Native ERGLP

streamside fleabane · Asteraceae
Erigeron pumilus Nutt. Native ERPU2

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

shaggy fleabane · Asteraceae
Eriogonum cernuum Nutt. Native ERCE2

nodding buckwheat · Polygonaceae
Eriogonum flavum Nutt. Native ERFL4

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

alpine golden buckwheat · Polygonaceae
Eriogonum pauciflorum Pursh Native ERPA9

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

fewflower buckwheat · Polygonaceae
Erodium cicutarium (L.) L'Hér. ex Aiton Introduced ERCI6

redstem stork's bill · Geraniaceae
Erysimum asperum (Nutt.) DC. Native ERAS2

western wallflower · Brassicaceae
Erysimum capitatum (Douglas ex Hook.) Greene Native ERCA14

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

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

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

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

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

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

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

spinystar · Cactaceae
Euphorbia esula L. Introduced EUES

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

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

Russian leafy spurge · Euphorbiaceae
Euphorbia spathulata Lam. Native EUSP

warty spurge · Euphorbiaceae
Festuca hallii (Vasey) Piper Native FEHA3

plains rough fescue · Poaceae
Festuca saximontana Rydb. Native FESA

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

Rocky Mountain fescue · Poaceae
Fragaria vesca L. Native FRVE

woodland strawberry · Rosaceae
Fraxinus pennsylvanica Marshall Native FRPE

green ash · Oleaceae
Fumaria officinalis L. Introduced FUOF

drug fumitory · Fumariaceae
Fumaria officinalis L. ssp. officinalis Introduced FUOFO

drug fumitory · Fumariaceae
Fumaria vaillantii Loisel. Introduced FUVA

earthsmoke · Fumariaceae
Gaillardia aristata Pursh Native GAAR

blanketflower · Asteraceae
Galium aparine L. Native GAAP2

stickywilly · Rubiaceae
Galium boreale L. Native GABO2

northern bedstraw · Rubiaceae
Galium triflorum Michx. Native GATR3

fragrant bedstraw · Rubiaceae
Geranium viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. Native GEVI2

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

sticky purple geranium · Geraniaceae
Geum aleppicum Jacq. Native GEAL3

yellow avens · Rosaceae
Geum triflorum Pursh Native GETR

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

old man's whiskers · Rosaceae
Glaux maritima L. Native GLMA

sea milkwort · Primulaceae
Glechoma hederacea L. Introduced GLHE2

ground ivy · Lamiaceae
Glycyrrhiza lepidota Pursh Native GLLE3

American licorice · Fabaceae
Gnaphalium palustre Nutt. Native GNPA

western marsh cudweed · Asteraceae
Grindelia squarrosa (Pursh) Dunal Native GRSQ

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

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

broom snakeweed · Asteraceae
Hackelia floribunda (Lehm.) I.M. Johnst. Native HAFL2

manyflower stickseed · Boraginaceae
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 nuttallii Torr. & A. Gray Native HENU

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

Nuttall's sunflower · Asteraceae
Helianthus nuttallii Torr. & A. Gray ssp. rydbergii (Britton) R.W. Long Native HENUR

Rydberg's sunflower · Asteraceae
Helianthus pauciflorus Nutt. Native HEPA19

stiff sunflower · Asteraceae
Helianthus pauciflorus Nutt. ssp. subrhomboideus (Rydb.) O. Spring & E. Schilling Native HEPAS

stiff sunflower · Asteraceae
Helianthus petiolaris Nutt. Native HEPE

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

prairie sunflower · Asteraceae
Heracleum maximum W. Bartram Native HEMA80

common cowparsnip · Apiaceae
Hesperis matronalis L. Introduced HEMA3

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

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

needle and thread · Poaceae
Hesperostipa curtiseta (Hitchc.) Barkworth Native HECU9

shortbristle 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
Heuchera richardsonii R. Br. Native HERI

Richardson's alumroot · Saxifragaceae
Hibiscus trionum L. Introduced HITR

flower of an hour · Malvaceae
Hordeum jubatum L. Native HOJU

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

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

foxtail barley · Poaceae
Hordeum vulgare L. Introduced HOVU

common barley · Poaceae
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
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 dudleyi Wiegand Native JUDU2

Dudley's rush · Juncaceae
Juncus interior Wiegand Native JUIN2

inland rush · Juncaceae
Juncus longistylis Torr. Native JULO

longstyle rush · Juncaceae
Juncus nodosus L. Native JUNO2

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

knotted 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
Lappula cenchrusoides A. Nelson Native LACE

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

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

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

European stickseed · Boraginaceae
Lemna turionifera Landolt Native LETU2

turion duckweed · Lemnaceae
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
Lepidium ramosissimum A. Nelson Native LERA2

manybranched pepperweed · Brassicaceae
Lepidium ramosissimum A. Nelson var. bourgeauanum (Thell.) Rollins Native LERAB2

Bourgeau's pepperweed · Brassicaceae
Lepidium ramosissimum A. Nelson var. ramosissimum Native LERAR3

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

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

alpine bladderpod · Brassicaceae
Lesquerella alpina (Nutt.) S. Watson var. spatulata (Rydb.) Payson Native LEALS

alpine bladderpod · Brassicaceae
Lesquerella arenosa (Richardson) Rydb. Native LEAR6

Great Plains bladderpod · Brassicaceae
Lesquerella arenosa (Richardson) Rydb. var. arenosa Native LEARA2

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

foothill bladderpod · Brassicaceae
Leucanthemum vulgare Lam. Introduced LEVU

oxeye daisy · Asteraceae
Liatris punctata Hook. Native LIPU

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

dotted blazing star · Asteraceae
Limosella aquatica L. Native LIAQ

water mudwort · Scrophulariaceae
Linaria dalmatica (L.) Mill. Introduced LIDA

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

Dalmatian toadflax · Scrophulariaceae
Linaria vulgaris Mill. Introduced LIVU2

butter and eggs · Scrophulariaceae
Linum australe A. Heller Native LIAU4

southern flax · Linaceae
Linum australe A. Heller var. australe Native LIAUA

southern flax · Linaceae
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
Linum rigidum Pursh Native LIRI

stiffstem flax · Linaceae
Linum rigidum Pursh var. rigidum Native LIRIR

stiffstem flax · Linaceae
Lithospermum incisum Lehm. Native LIIN2

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

field cottonrose · Asteraceae
Lolium persicum Boiss. & Hohen. ex Boiss. Introduced LOPE2

Persian ryegrass · Poaceae
Lomatium cous (S. Watson) J.M. Coult. & Rose Native LOCO4

cous biscuitroot · Apiaceae
Lomatium dissectum (Nutt.) Mathias & Constance Native LODI

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

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

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

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

bigseed biscuitroot · Apiaceae
Lonicera tatarica L. Introduced LOTA

Tatarian honeysuckle · Caprifoliaceae
Lotus unifoliolatus (Hook.) Benth. Native LOUN

American bird's-foot trefoil · Fabaceae
Lotus unifoliolatus (Hook.) Benth. var. unifoliolatus Native LOUNU

American bird's-foot trefoil · Fabaceae
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
Lupinus pusillus Pursh ssp. pusillus Native LUPUP

rusty lupine · Fabaceae
Lupinus wyethii S. Watson Native LUWY

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

Wyeth's lupine · Fabaceae
Lycium barbarum L. Introduced LYBA4

matrimony vine · Solanaceae
Lycopus americanus Muhl. ex W.P.C. Barton Native LYAM

American water horehound · Lamiaceae
Lycopus asper Greene Native LYAS

rough bugleweed · Lamiaceae
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
Madia glomerata Hook. Native MAGL2

mountain tarweed · Asteraceae
Maianthemum stellatum (L.) Link Native MAST4

starry false lily of the valley · Liliaceae
Malcolmia africana (L.) W.T. Aiton Introduced MAAF

African mustard · Brassicaceae
Marsilea vestita Hook. & Grev. Native MAVE2

hairy waterclover · Marsileaceae
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 albicaulis (Hook.) Torr. & A. Gray Native MEAL6

whitestem blazingstar · Loasaceae
Mentzelia dispersa S. Watson Native MEDI

bushy blazingstar · Loasaceae
Mentzelia nuda (Pursh) Torr. & A. Gray Native MENU

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

prairie bluebells · Boraginaceae
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
Monolepis nuttalliana (Schult.) Greene Native MONU

Nuttall's povertyweed · Chenopodiaceae
Muhlenbergia cuspidata (Torr. ex Hook.) Rydb. Native MUCU3

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

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

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

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

leafy wildparsley · Apiaceae
Myosurus minimus L. Native MYMI2

tiny mousetail · Ranunculaceae
Myriophyllum sibiricum Kom. Native MYSI

shortspike watermilfoil · Haloragaceae
Myriophyllum verticillatum L. Native MYVE3

whorl-leaf watermilfoil · Haloragaceae
Nassella viridula (Trin.) Barkworth Native NAVI4

green needlegrass · Poaceae
Nasturtium officinale W.T. Aiton Introduced NAOF

watercress · Brassicaceae
Navarretia intertexta (Benth.) Hook. Native NAIN2

needleleaf navarretia · Polemoniaceae
Navarretia intertexta (Benth.) Hook. ssp. propinqua (Suksd.) Day Native NAINP3

near navarretia · Polemoniaceae
Navarretia saximontana S.C. Spencer Native NASA3

Rocky Mountain Pincushion-Plant · Polemoniaceae
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 flava (A. Nelson) Garrett Native OEFL

yellow evening primrose · Onagraceae
Oenothera nuttallii Sweet Native OENU

Nuttall's evening primrose · Onagraceae
Oenothera suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

scarlet beeblossom · Onagraceae
Oenothera villosa Thunb. Native OEVI

hairy evening primrose · Onagraceae
Oenothera villosa Thunb. ssp. strigosa (Rydb.) W. Dietr. & P.H. Raven Native OEVIS

hairy evening primrose · Onagraceae
Oligoneuron rigidum (L.) Small Native OLRI

stiff goldenrod · Asteraceae
Oligoneuron rigidum (L.) Small var. humile (Porter) G.L. Nesom Native OLRIH

stiff goldenrod · Asteraceae
Opuntia fragilis (Nutt.) Haw. Native OPFR

brittle pricklypear · Cactaceae
Opuntia polyacantha Haw. Native OPPO

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

hairspine pricklypear · Cactaceae
Oreostemma alpigenum (Torr. & A. Gray) Greene Native ORAL4

tundra aster · Asteraceae
Oreostemma alpigenum (Torr. & A. Gray) Greene var. haydenii (Porter) G.L. Nesom Native ORALH

tundra aster · Asteraceae
Orobanche fasciculata Nutt. Native ORFA

clustered broomrape · Orobanchaceae
Orthocarpus luteus Nutt. Native ORLU2

yellow owl's-clover · Scrophulariaceae
Oxalis dillenii Jacq. Native OXDI2

slender yellow woodsorrel · Oxalidaceae
Oxytropis besseyi (Rydb.) Blank. Native OXBE2

Bessey's locoweed · Fabaceae
Oxytropis besseyi (Rydb.) Blank. var. argophylla (Rydb.) Barneby Native OXBEA

Montana locoweed · Fabaceae
Oxytropis besseyi (Rydb.) Blank. var. besseyi Native OXBEB

Bessey's locoweed · Fabaceae
Oxytropis campestris (L.) DC. Native OXCA4

field locoweed · Fabaceae
Oxytropis campestris (L.) DC. var. spicata Hook. Native OXCAS3

field locoweed · Fabaceae
Oxytropis lambertii Pursh Native OXLA3

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

purple locoweed · Fabaceae
Oxytropis monticola A. Gray Native OXMO2

yellowflower locoweed · Fabaceae
Oxytropis sericea Nutt. Native OXSE

white locoweed · Fabaceae
Oxytropis sericea Nutt. var. speciosa (Torr. & A. Gray) S.L. Welsh Native OXSES2

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

woolly groundsel · Asteraceae
Panicum capillare L. Native PACA6

witchgrass · Poaceae
Parietaria pensylvanica Muhl. ex Willd. Native PAPE5

Pennsylvania pellitory · Urticaceae
Paronychia sessiliflora Nutt. Native PASE

creeping nailwort · Caryophyllaceae
Parthenocissus vitacea (Knerr) Hitchc. Native PAVI5

woodbine · Vitaceae
Pascopyrum smithii (Rydb.) Á. Löve Native PASM

western wheatgrass · Poaceae
Pediomelum argophyllum (Pursh) J. Grimes Native PEAR6

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

large Indian breadroot · Fabaceae
Peganum harmala L. Introduced PEHA

harmal peganum · Zygophyllaceae
Penstemon albidus Nutt. Native PEAL2

white penstemon · Scrophulariaceae
Penstemon eriantherus Pursh Native PEER

fuzzytongue penstemon · Scrophulariaceae
Penstemon eriantherus Pursh var. eriantherus Native PEERE

fuzzytongue penstemon · Scrophulariaceae
Penstemon gracilis Nutt. Native PEGR5

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

waxleaf penstemon · Scrophulariaceae
Penstemon nitidus Douglas ex Benth. var. nitidus Native PENIN

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
Phalaris arundinacea L. Native PHAR3

reed canarygrass · Poaceae
Phlox alyssifolia Greene Native PHAL3

alyssumleaf phlox · Polemoniaceae
Phlox andicola E.E. Nelson Native PHAN4

prairie phlox · Polemoniaceae
Phlox hoodii Richardson Native PHHO

spiny phlox · Polemoniaceae
Phragmites australis (Cav.) Trin. ex Steud. Both PHAU7

common reed · Poaceae
Physalis longifolia Nutt. Native PHLO4

longleaf groundcherry · Solanaceae
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
Piptatheropsis micrantha (Trin. & Rupr.) Romasch., P.M. Peterson & R.J. Soreng Native PIMI

littleseed ricegrass · Poaceae
Plagiobothrys leptocladus (Greene) I.M. Johnst. Native PLLE

finebranched popcornflower · Boraginaceae
Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. Native PLSC2

Scouler's popcornflower · Boraginaceae
Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. var. hispidulus (Greene) Dorn Native PLSCH

sleeping popcornflower · Boraginaceae
Plantago elongata Pursh Native PLEL

prairie plantain · Plantaginaceae
Plantago elongata Pursh ssp. elongata Native PLELE

prairie plantain · Plantaginaceae
Plantago eriopoda Torr. Native PLER

redwool plantain · Plantaginaceae
Plantago major L. Introduced PLMA2

common plantain · Plantaginaceae
Plantago patagonica Jacq. Native PLPA2

woolly plantain · Plantaginaceae
Poa arida Vasey Native POAR3

plains bluegrass · Poaceae
Poa compressa L. Introduced POCO

Canada bluegrass · Poaceae
Poa cusickii Vasey Native POCU3

Cusick's bluegrass · Poaceae
Poa cusickii Vasey ssp. pallida Soreng Native POCUP3

Cusick's bluegrass · Poaceae
Poa fendleriana (Steud.) Vasey Native POFE

muttongrass · Poaceae
Poa fendleriana (Steud.) Vasey ssp. fendleriana Native POFEF

muttongrass · Poaceae
Poa palustris L. Native POPA2

fowl bluegrass · Poaceae
Poa pratensis L. Both POPR

Kentucky bluegrass · Poaceae
Poa secunda J. Presl Native POSE

Sandberg 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
Polygala alba Nutt. Native POAL4

white milkwort · Polygalaceae
Polygala verticillata L. Native POVE

whorled milkwort · Polygalaceae
Polygonum achoreum S.F. Blake Native POAC3

leathery knotweed · Polygonaceae
Polygonum amphibium L. Native POAM8

water knotweed · Polygonaceae
Polygonum amphibium L. var. emersum Michx. Native POAME

longroot smartweed · Polygonaceae
Polygonum arenastrum Jord. ex Boreau Introduced POAR11

oval-leaf knotweed · Polygonaceae
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 cuspidatum Siebold & Zucc. Introduced POCU6

Japanese knotweed · Polygonaceae
Polygonum douglasii Greene Native PODO4

Douglas' knotweed · Polygonaceae
Polygonum erectum L. Native POER2

erect knotweed · Polygonaceae
Polygonum hydropiper L. Introduced POHY

marshpepper knotweed · Polygonaceae
Polygonum lapathifolium L. Native POLA4

curlytop knotweed · Polygonaceae
Polygonum ramosissimum Michx. Native PORA3

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

bushy knotweed · Polygonaceae
Polypogon monspeliensis (L.) Desf. Introduced POMO5

annual rabbitsfoot grass · Poaceae
Populus deltoides W. Bartram ex Marshall Native PODE3

eastern cottonwood · Salicaceae
Populus deltoides W. Bartram ex Marshall ssp. monilifera (Aiton) Eckenwalder Native PODEM

plains cottonwood · Salicaceae
Populus tremuloides Michx. Native POTR5

quaking aspen · Salicaceae
Portulaca oleracea L. Both POOL

little hogweed · Portulacaceae
Potamogeton crispus L. Introduced POCR3

curly pondweed · Potamogetonaceae
Potamogeton pusillus L. Native POPU7

small pondweed · Potamogetonaceae
Potamogeton pusillus L. ssp. pusillus Native POPUP5

small pondweed · Potamogetonaceae
Potamogeton richardsonii (Benn.) Rydb. Native PORI2

Richardson's pondweed · Potamogetonaceae
Potentilla arguta Pursh Native POAR7

tall cinquefoil · Rosaceae
Potentilla arguta Pursh ssp. arguta Native POARA4

tall cinquefoil · Rosaceae
Potentilla bipinnatifida Douglas ex Hook. Native POBI10

tansy cinquefoil · Rosaceae
Potentilla concinna Richardson Native POCO13

elegant cinquefoil · Rosaceae
Potentilla concinna Richardson var. concinna Native POCOC3

elegant cinquefoil · Rosaceae
Potentilla gracilis Douglas ex Hook. Native POGR9

slender cinquefoil · Rosaceae
Potentilla gracilis Douglas ex Hook. var. fastigiata (Nutt.) S. Watson Native POGRF2

slender cinquefoil · Rosaceae
Potentilla hippiana Lehm. Native POHI6

woolly cinquefoil · Rosaceae
Potentilla hippiana Lehm. var. hippiana Native POHIH

woolly cinquefoil · Rosaceae
Potentilla norvegica L. Native PONO3

Norwegian cinquefoil · Rosaceae
Potentilla norvegica L. ssp. monspeliensis (L.) Asch. & Graebn. Native PONOM

Norwegian cinquefoil · Rosaceae
Potentilla paradoxa Nutt. Native POPA15

Paradox cinquefoil · Rosaceae
Potentilla pectinisecta Rydb. Native POPE23

combleaf cinquefoil · Rosaceae
Potentilla pensylvanica L. Native POPE8

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

Pennsylvania cinquefoil · Rosaceae
Potentilla plattensis Nutt. Native POPL

Platte River cinquefoil · Rosaceae
Potentilla pulcherrima Lehm. Native POPU9

beautiful cinquefoil · Rosaceae
Potentilla recta L. Introduced PORE5

sulphur cinquefoil · Rosaceae
Potentilla rivalis Nutt. Native PORI3

brook cinquefoil · Rosaceae
Prosartes trachycarpa S. Watson Native PRTR4

roughfruit fairybells · Liliaceae
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
Psathyrostachys juncea (Fisch.) Nevski Introduced PSJU3

Russian wildrye · Poaceae
Pseudoroegneria spicata (Pursh) Á. Löve Native PSSP6

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

bluebunch wheatgrass · Poaceae
Psoralidium lanceolatum (Pursh) Rydb. Native PSLA3

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

weeping alkaligrass · Poaceae
Puccinellia nuttalliana (Schult.) Hitchc. Native PUNU2

Nuttall's alkaligrass · Poaceae
Pulsatilla patens (L.) Mill. Native PUPA5

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

cutleaf anemone · Ranunculaceae
Pyrrocoma lanceolata (Hook.) Greene Native PYLA

lanceleaf goldenweed · Asteraceae
Pyrrocoma lanceolata (Hook.) Greene var. lanceolata Native PYLAL

lanceleaf goldenweed · Asteraceae
Ranunculus cymbalaria Pursh Native RACY

alkali buttercup · Ranunculaceae
Ranunculus glaberrimus Hook. Native RAGL

sagebrush buttercup · Ranunculaceae
Ranunculus glaberrimus Hook. var. ellipticus (Greene) Greene Native RAGLE

elliptical buttercup · Ranunculaceae
Ranunculus hyperboreus Rottb. Native RAHY2

high northern buttercup · Ranunculaceae
Ranunculus longirostris Godr. Native RALO2

longbeak buttercup · Ranunculaceae
Ranunculus macounii Britton Native RAMA2

Macoun's buttercup · Ranunculaceae
Ranunculus trichophyllus Chaix Native RATR

threadleaf crowfoot · Ranunculaceae
Ranunculus trichophyllus Chaix var. trichophyllus Native RATRT

threadleaf crowfoot · Ranunculaceae
Ratibida columnifera (Nutt.) Wooton & Standl. Native RACO3

upright prairie coneflower · Asteraceae
Rhamnus cathartica L. Introduced RHCA3

common buckthorn · Rhamnaceae
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 oxyacanthoides L. Native RIOX

Canadian gooseberry · Grossulariaceae
Ribes oxyacanthoides L. ssp. oxyacanthoides Native RIOXO

Canadian gooseberry · Grossulariaceae
Rorippa curvisiliqua (Hook.) Besser ex Britton Native ROCU

curvepod yellowcress · Brassicaceae
Rorippa palustris (L.) Besser Native ROPA2

bog yellowcress · Brassicaceae
Rorippa palustris (L.) Besser ssp. fernaldiana (Butters & Abbe) Jonsell Native ROPAF2

Fernald's yellowcress · Brassicaceae
Rorippa palustris (L.) Besser ssp. hispida (Desv.) Jonsell Native ROPAH

hispid yellowcress · Brassicaceae
Rorippa sinuata (Nutt.) Hitchc. Native ROSI2

spreading yellowcress · Brassicaceae
Rorippa tenerrima Greene Native ROTE

Modoc yellowcress · Brassicaceae
Rosa acicularis Lindl. Native ROAC

prickly rose · Rosaceae
Rosa acicularis Lindl. ssp. sayi (Schwein.) W.H. Lewis Native ROACS

prickly rose · Rosaceae
Rosa arkansana Porter Native ROAR3

prairie rose · Rosaceae
Rosa arkansana Porter var. arkansana Native ROARA

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

prairie rose · Rosaceae
Rosa nutkana C. Presl Native RONU

Nootka rose · Rosaceae
Rosa nutkana C. Presl var. hispida Fernald Native RONUH

bristly Nootka rose · Rosaceae
Rosa woodsii Lindl. Native ROWO

Woods' rose · Rosaceae
Rosa woodsii Lindl. var. woodsii Native ROWOW

Woods' rose · Rosaceae
Rubus idaeus L. Both RUID

American red raspberry · Rosaceae
Rubus idaeus L. ssp. strigosus (Michx.) Focke Native RUIDS2

grayleaf red raspberry · Rosaceae
Rumex aquaticus L. Native RUAQ

western dock · Polygonaceae
Rumex aquaticus L. var. fenestratus (Greene) Dorn Native RUAQF

western dock · Polygonaceae
Rumex crispus L. Introduced RUCR

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

curly dock · Polygonaceae
Rumex maritimus L. Native RUMA4

golden dock · Polygonaceae
Rumex patientia L. Introduced RUPA5

patience dock · Polygonaceae
Rumex salicifolius Weinm. Native RUSA

willow dock · Polygonaceae
Rumex salicifolius Weinm. var. denticulatus Torr. Native RUSAD

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

Mexican dock · Polygonaceae
Rumex stenophyllus Ledeb. Introduced RUST4

narrowleaf dock · Polygonaceae
Rumex venosus Pursh Native RUVE2

veiny dock · Polygonaceae
Sagittaria cuneata Sheldon Native SACU

arumleaf arrowhead · Alismataceae
Salix amygdaloides Andersson Native SAAM2

peachleaf willow · Salicaceae
Salix exigua Nutt. Native SAEX

narrowleaf willow · Salicaceae
Salix fragilis L. Introduced SAFR

crack willow · Salicaceae
Salix interior Rowlee Native SAIN3

sandbar willow · Salicaceae
Salix lutea Nutt. Native SALU2

yellow willow · Salicaceae
Salsola tragus L. Introduced SATR12

prickly Russian thistle · Chenopodiaceae
Salvia reflexa Hornem. Native SARE3

lanceleaf sage · Lamiaceae
Salvia ×sylvestris L. (pro sp.) [nemorosa × pratensis] Introduced SASY

woodland sage · Lamiaceae
Sarcobatus vermiculatus (Hook.) Torr. Native SAVE4

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

tumblegrass · Poaceae
Schizachyrium scoparium (Michx.) Nash Native SCSC

little bluestem · Poaceae
Schizachyrium scoparium (Michx.) Nash var. scoparium Native SCSCS

little bluestem · Poaceae
Schoenocrambe linifolia (Nutt.) Greene Native SCLI

flaxleaf plainsmustard · Brassicaceae
Schoenoplectus acutus (Muhl. ex Bigelow) Á. Löve & D. Löve Native SCAC3

hardstem bulrush · Cyperaceae
Schoenoplectus acutus (Muhl. ex Bigelow) Á. Löve & D. Löve var. acutus Native SCACA

hardstem bulrush · Cyperaceae
Schoenoplectus acutus (Muhl. ex Bigelow) Á. Löve & D. Löve var. occidentalis (S. Watson) S.G. Sm. Native SCACO2

tule · Cyperaceae
Schoenoplectus americanus (Pers.) Volkart ex Schinz & R. Keller Native SCAM6

chairmaker's bulrush · Cyperaceae
Schoenoplectus pungens (Vahl) Palla Native SCPU10

common threesquare · Cyperaceae
Schoenoplectus pungens (Vahl) Palla var. pungens Native SCPUP5

common threesquare · Cyperaceae
Schoenoplectus tabernaemontani (C.C. Gmel.) Palla Native SCTA2

softstem bulrush · Cyperaceae
Scirpus pallidus (Britton) Fernald Native SCPA8

cloaked bulrush · Cyperaceae
Scleranthus annuus L. Introduced SCAN2

German knotgrass · Caryophyllaceae
Selaginella densa Rydb. Native SEDE2

lesser spikemoss · Selaginellaceae
Senecio integerrimus Nutt. Native SEIN2

lambstongue ragwort · Asteraceae
Senecio integerrimus Nutt. var. exaltatus (Nutt.) Cronquist Native SEINE

Columbia ragwort · Asteraceae
Senecio integerrimus Nutt. var. integerrimus Native SEINI

lambstongue ragwort · Asteraceae
Senecio integerrimus Nutt. var. scribneri (Rydb.) T.M. Barkley Native SEINS

Scribner's 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
Silene csereii Baumg. Introduced SICS

Balkan catchfly · Caryophyllaceae
Silene drummondii Hook. Native SIDR

Drummond's campion · Caryophyllaceae
Silene drummondii Hook. var. drummondii Native SIDRD

Drummond's campion · Caryophyllaceae
Silene drummondii Hook. var. striata (Rydb.) Bocquet Native SIDRS

Drummond's campion · Caryophyllaceae
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
Sisyrinchium montanum Greene Native SIMO2

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

strict blue-eyed grass · Iridaceae
Sium suave Walter Native SISU2

hemlock waterparsnip · Apiaceae
Solanum dulcamara L. Introduced SODU

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

climbing nightshade · Solanaceae
Solanum physalifolium Rusby Introduced SOPH

hoe nightshade · Solanaceae
Solanum ptycanthum Dunal Native SOPT7

West Indian nightshade · Solanaceae
Solanum rostratum Dunal Native SORO

buffalobur nightshade · Solanaceae
Solanum triflorum Nutt. Native SOTR

cutleaf nightshade · Solanaceae
Solidago canadensis L. Native SOCA6

Canada goldenrod · Asteraceae
Solidago canadensis L. var. gilvocanescens Rydb. Native SOCAG

shorthair goldenrod · Asteraceae
Solidago canadensis L. var. lepida (DC.) Cronquist Native SOCAL

Canada goldenrod · Asteraceae
Solidago gigantea Aiton Native SOGI

giant goldenrod · Asteraceae
Solidago missouriensis Nutt. Native SOMI2

Missouri goldenrod · Asteraceae
Solidago missouriensis Nutt. var. missouriensis Native SOMIM

Missouri goldenrod · Asteraceae
Solidago mollis Bartlett Native SOMO

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

velvety goldenrod · Asteraceae
Solidago nemoralis Aiton Native SONE

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

gray goldenrod · Asteraceae
Solidago simplex Kunth Native SOSI3

Mt. Albert goldenrod · Asteraceae
Solidago simplex Kunth ssp. simplex Native SOSIS

Mt. Albert goldenrod · Asteraceae
Solidago simplex Kunth ssp. simplex var. simplex Native SOSIS3

Mt. Albert goldenrod · Asteraceae
Sonchus arvensis L. Introduced SOAR2

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

moist sowthistle · Asteraceae
Sparganium eurycarpum Engelm. Native SPEU

broadfruit bur-reed · Sparganiaceae
Spartina gracilis Trin. Native SPGR

alkali cordgrass · Poaceae
Spartina pectinata Bosc ex Link Native SPPE

prairie cordgrass · Poaceae
Spergularia salina J. Presl & C. Presl Native SPSA5

salt sandspurry · Caryophyllaceae
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
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
Stenotus armerioides Nutt. Native STAR10

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

thrift mock goldenweed · Asteraceae
Stephanomeria minor (Hook.) Nutt. Native STMI13

lesser wirelettuce · Asteraceae
Stephanomeria minor (Hook.) Nutt. var. minor Native STMIM

narrowleaf wirelettuce · Asteraceae
Stephanomeria runcinata Nutt. Native STRU3

desert wirelettuce · Asteraceae
Stuckenia filiformis (Pers.) Börner Native STFI6

fineleaf pondweed · Potamogetonaceae
Stuckenia filiformis (Pers.) Börner ssp. alpina (Blytt) Haynes, D.H. Les & M. Kral Native STFIA2

fineleaf pondweed · Potamogetonaceae
Stuckenia pectinata (L.) Börner Native STPE15

sago pondweed · Potamogetonaceae
Suaeda calceoliformis (Hook.) Moq. Native SUCA2

Pursh seepweed · Chenopodiaceae
Suaeda moquinii (Torr.) Greene Native SUMO

Mojave seablite · Chenopodiaceae
Suckleya suckleyana (Torr.) Rydb. Native SUSU2

poison suckleya · Chenopodiaceae
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 ciliatum (Ledeb.) G.L. Nesom Native SYCI2

rayless alkali aster · Asteraceae
Symphyotrichum ericoides (L.) G.L. Nesom Native SYER

white heath aster · Asteraceae
Symphyotrichum ericoides (L.) G.L. Nesom var. pansum (S.F. Blake) G.L. Nesom Native SYERP2

manyflowered aster · Asteraceae
Symphyotrichum falcatum (Lindl.) G.L. Nesom Native SYFA

white prairie aster · Asteraceae
Symphyotrichum falcatum (Lindl.) G.L. Nesom var. commutatum (Torr. & A. Gray) G.L. Nesom Native SYFAC

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

white prairie aster · Asteraceae
Symphyotrichum laeve (L.) Á. Löve & D. Löve Native SYLA3

smooth blue aster · Asteraceae
Symphyotrichum laeve (L.) Á. Löve & D. Löve var. geyeri (A. Gray) G.L. Nesom Native SYLAG

Geyer's aster · Asteraceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom Native SYLA6

white panicle aster · Asteraceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. hesperium (A. Gray) G.L. Nesom Native SYLAH

white panicle aster · Asteraceae
Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. hesperium (A. Gray) G.L. Nesom var. hesperium Native SYLAH6

white panicle aster · Asteraceae
Tamarix chinensis Lour. Introduced TACH2

five-stamen tamarisk · Tamaricaceae
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
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 occidentale A. Gray Native THOC

western 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
Thinopyrum ponticum (Podp.) Z.-W. Liu & R.-C. Wang Introduced THPO7

tall 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
Toxicodendron rydbergii (Small ex Rydb.) Greene Native TORY

western poison ivy · Anacardiaceae
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 fragiferum L. Introduced TRFR2

strawberry clover · Fabaceae
Trifolium pratense L. Introduced TRPR2

red clover · Fabaceae
Trifolium repens L. Introduced TRRE3

white clover · Fabaceae
Triglochin maritima L. Native TRMA20

seaside arrowgrass · Juncaginaceae
Triodanis leptocarpa (Nutt.) Nieuwl. Native TRLE3

slimpod Venus' looking-glass · Campanulaceae
Tripterocalyx micranthus (Torr.) Hook. Native TRMI6

smallflower sandverbena · Nyctaginaceae
Triticum aestivum L. Introduced TRAE

common wheat · Poaceae
Typha angustifolia L. Both TYAN

narrowleaf cattail · Typhaceae
Typha latifolia L. Native TYLA

broadleaf cattail · Typhaceae
Ulmus pumila L. Introduced ULPU

Siberian elm · Ulmaceae
Urtica dioica L. Both URDI

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

California nettle · Urticaceae
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
Veronica anagallis-aquatica L. Native VEAN2

water speedwell · Scrophulariaceae
Veronica peregrina L. Native VEPE2

neckweed · Scrophulariaceae
Veronica peregrina L. ssp. xalapensis (Kunth) Pennell Native VEPEX2

hairy purslane speedwell · Scrophulariaceae
Vicia americana Muhl. ex Willd. Native VIAM

American vetch · Fabaceae
Vicia americana Muhl. ex Willd. ssp. americana Native VIAMA3

American vetch · Fabaceae
Vicia americana Muhl. ex Willd. ssp. minor (Hook.) C.R. Gunn Native VIAMM3

mat vetch · Fabaceae
Viola canadensis L. Native VICA4

Canadian white violet · Violaceae
Viola nephrophylla Greene Native VINE

northern bog violet · Violaceae
Viola nuttallii Pursh Native VINU2

Nuttall's violet · Violaceae
Viola vallicola A. Nelson Native VIVA

sagebrush violet · Violaceae
Vulpia octoflora (Walter) Rydb. Native VUOC

sixweeks fescue · Poaceae
Vulpia octoflora (Walter) Rydb. var. glauca (Nutt.) Fernald Native VUOCG

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
Woodsia oregana D.C. Eaton ssp. cathcartiana (B.L. Rob.) Windham Native WOORC2

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
Zizia aptera (A. Gray) Fernald Native ZIAP

meadow zizia · Apiaceae