Powell County

Showing 1–50 of 667.

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  Achillea millefolium L. Both ACMI2

  common yarrow · Asteraceae
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  Achillea ptarmica L. Introduced ACPT

  sneezeweed · Asteraceae
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  Acinos arvensis (Lam.) Dandy Introduced ACAR2

  basil thyme · Lamiaceae
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  Acroptilon repens (L.) DC. Introduced ACRE3

  hardheads · Asteraceae
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  Adonis aestivalis L. Introduced ADAE

  summer pheasant's eye · Ranunculaceae
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  Adonis annua L. Introduced ADAN

  blooddrops · Ranunculaceae
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  Agastache urticifolia (Benth.) Kuntze Native AGUR

  nettleleaf giant hyssop · Lamiaceae
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  Agastache urticifolia (Benth.) Kuntze var. urticifolia Native AGURU

  nettleleaf giant hyssop · Lamiaceae
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  Agoseris aurantiaca (Hook.) Greene Native AGAU2

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

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

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

  crested wheatgrass · Poaceae
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  Agrostis stolonifera L. Introduced AGST2

  creeping bentgrass · Poaceae
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  Allium geyeri S. Watson Native ALGE

  Geyer's onion · Liliaceae
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  Allium geyeri S. Watson var. tenerum M.E. Jones Native ALGET

  bulbil onion · Liliaceae
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  Allium schoenoprasum L. Both ALSC

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

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

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

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

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

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

  Sitka alder · Betulaceae
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  Alopecurus pratensis L. Introduced ALPR3

  meadow foxtail · Poaceae
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  Alyssum desertorum Stapf Introduced ALDE

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

  desert madwort · Brassicaceae
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  Amaranthus blitoides S. Watson Introduced AMBL

  mat amaranth · Amaranthaceae
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  Amaranthus retroflexus L. Native AMRE

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

  Saskatoon serviceberry · Rosaceae
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  Amsinckia menziesii (Lehm.) A. Nelson & J.F. Macbr. Native AMME

  Menzies' fiddleneck · Boraginaceae
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  Amsinckia menziesii (Lehm.) A. Nelson & J.F. Macbr. var. intermedia (Fisch. & C.A. Mey.) Ganders Native AMMEI2

  common fiddleneck · Boraginaceae
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  Anaphalis margaritacea (L.) Benth. Native ANMA

  western pearly everlasting · Asteraceae
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  Androsace septentrionalis L. Native ANSE4

  pygmyflower rockjasmine · Primulaceae
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  Anemone multifida Poir. Native ANMU

  Pacific anemone · Ranunculaceae
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  Antennaria racemosa Hook. Native ANRA

  raceme pussytoes · Asteraceae
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  Antennaria rosea Greene Native ANRO2

  rosy pussytoes · Asteraceae
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  Antennaria umbrinella Rydb. Native ANUM

  umber pussytoes · Asteraceae
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  Apocynum androsaemifolium L. Native APAN2

  spreading dogbane · Apocynaceae
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  Aquilegia flavescens S. Watson Native AQFL

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

  yellow columbine · Ranunculaceae
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  Arabis drummondii A. Gray Native ARDR

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

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

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

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

  creamflower rockcress · Brassicaceae
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  Arabis holboellii Hornem. Native ARHO2

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

  Lyall's rockcress · Brassicaceae
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  Arabis lyallii S. Watson var. lyallii Native ARLYL

  Lyall's rockcress · Brassicaceae
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  Arabis nuttallii B.L. Rob. Native ARNU

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

  spreadingpod rockcress · Brassicaceae
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  Arctostaphylos uva-ursi (L.) Spreng. Native ARUV

  kinnikinnick · Ericaceae