Idaho

• Ada 16001
  1,138 taxa Open ↗
• Adams 16003
  1,150 taxa Open ↗
• Bannock 16005
  1,054 taxa Open ↗
• Bear Lake 16007
  742 taxa Open ↗
• Benewah 16009
  567 taxa Open ↗
• Bingham 16011
  581 taxa Open ↗
• Blaine 16013
  1,253 taxa Open ↗
• Boise 16015
  1,167 taxa Open ↗
• Bonner 16017
  1,263 taxa Open ↗
• Bonneville 16019
  857 taxa Open ↗

Showing 2,601–2,650 of 4,103.

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  Oenothera caespitosa Nutt. ssp. caespitosa Native OECAC2

  tufted evening primrose · Onagraceae 21 counties
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  Oenothera caespitosa Nutt. ssp. marginata (Nutt. ex Hook. & Arn.) Munz Native OECAM4

  tufted evening primrose · Onagraceae 22 counties
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  Oenothera coronopifolia Torr. & A. Gray Native OECO2

  crownleaf evening primrose · Onagraceae 1 county
• 
  Oenothera curtiflora W.L. Wagner & Hoch Native OECU2

  velvetweed · Onagraceae 13 counties
• 
  Oenothera elata Kunth Native OEEL

  Hooker's evening primrose · Onagraceae 12 counties
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  Oenothera elata Kunth ssp. hirsutissima (A. Gray ex S. Watson) W. Dietr. Native OEELH

  Hooker's evening primrose · Onagraceae 12 counties
• 
  Oenothera flava (A. Nelson) Garrett Native OEFL

  yellow evening primrose · Onagraceae 9 counties
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  Oenothera flava (A. Nelson) Garrett ssp. flava Native OEFLF

  yellow evening primrose · Onagraceae 9 counties
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  Oenothera nuttallii Sweet Native OENU

  Nuttall's evening primrose · Onagraceae 1 county
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  Oenothera pallida Lindl. Native OEPA

  pale evening primrose · Onagraceae 20 counties
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  Oenothera pallida Lindl. ssp. pallida Native OEPAP

  pale evening primrose · Onagraceae 20 counties
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  Oenothera psammophila (A. Nelson & J.F. Macbr.) W.L. Wagner, Stockhouse & Klein Native OEPS2

  St. Anthony Dunes evening primrose · Onagraceae 2 counties
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  Oenothera suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

  scarlet beeblossom · Onagraceae 3 counties
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  Oenothera villosa Thunb. Native OEVI

  hairy evening primrose · Onagraceae 31 counties
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  Oenothera villosa Thunb. ssp. strigosa (Rydb.) W. Dietr. & P.H. Raven Native OEVIS

  hairy evening primrose · Onagraceae 31 counties
• 
  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae 2 counties
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  Oligoneuron rigidum (L.) Small var. humile (Porter) G.L. Nesom Native OLRIH

  stiff goldenrod · Asteraceae 2 counties
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  Olsynium douglasii (A. Dietr.) E.P. Bicknell Native OLDO

  Douglas' grasswidow · Iridaceae 18 counties
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  Olsynium douglasii (A. Dietr.) E.P. Bicknell var. inflatum (Suksd.) Cholewa & Douglass M. Hend. Native OLDOI

  inflated grasswidow · Iridaceae 18 counties
• 
  Onobrychis viciifolia Scop. Introduced ONVI

  sainfoin · Fabaceae 13 counties
• 
  Onopordum acanthium L. Introduced ONAC

  Scotch cottonthistle · Asteraceae 42 counties
• 
  Oplopanax horridus (Sm.) Miq. Native OPHO

  devilsclub · Araliaceae 5 counties
• 
  Opuntia fragilis (Nutt.) Haw. Native OPFR

  brittle pricklypear · Cactaceae 4 counties
• 
  Opuntia macrorhiza Engelm. Native OPMA2

  twistspine pricklypear · Cactaceae 2 counties
• 
  Opuntia macrorhiza Engelm. var. macrorhiza Native OPMAM3

  twistspine pricklypear · Cactaceae 2 counties
• 
  Opuntia polyacantha Haw. Native OPPO

  plains pricklypear · Cactaceae 20 counties
• 
  Opuntia polyacantha Haw. var. polyacantha Native OPPOP

  hairspine pricklypear · Cactaceae 19 counties
• ⚘
  Opuntia ×columbiana Griffiths (pro sp.) [fragilis × polyacantha] Native OPCO13

  grizzleybear pricklypear · Cactaceae 2 counties
• 
  Oreochrysum parryi (A. Gray) Rydb. Native ORPA3

  Parry's goldenrod · Asteraceae 1 county
• 
  Oreostemma alpigenum (Torr. & A. Gray) Greene Native ORAL4

  tundra aster · Asteraceae 12 counties
• 
  Oreostemma alpigenum (Torr. & A. Gray) Greene var. haydenii (Porter) G.L. Nesom Native ORALH

  tundra aster · Asteraceae 12 counties
• 
  Ornithogalum umbellatum L. Introduced ORUM

  star of Bethlehem · Liliaceae 8 counties
• 
  Orobanche corymbosa (Rydb.) Ferris Native ORCO5

  flat-top broomrape · Orobanchaceae 7 counties
• 
  Orobanche corymbosa (Rydb.) Ferris ssp. corymbosa Native ORCOC3

  flat-top broomrape · Orobanchaceae 7 counties
• 
  Orobanche fasciculata Nutt. Native ORFA

  clustered broomrape · Orobanchaceae 24 counties
• 
  Orobanche ludoviciana Nutt. Native ORLU

  Louisiana broomrape · Orobanchaceae 1 county
• 
  Orobanche ludoviciana Nutt. ssp. ludoviciana Native ORLUL2

  Louisiana broomrape · Orobanchaceae 1 county
• 
  Orobanche pinorum Geyer ex Hook. Native ORPI2

  conifer broomrape · Orobanchaceae 3 counties
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 22 counties
• 
  Orogenia linearifolia S. Watson Native ORLI

  Great Basin Indian potato · Apiaceae 26 counties
• 
  Orthilia secunda (L.) House Native ORSE

  sidebells wintergreen · Pyrolaceae 14 counties
• 
  Orthocarpus luteus Nutt. Native ORLU2

  yellow owl's-clover · Scrophulariaceae 19 counties
• 
  Orthocarpus tenuifolius (Pursh) Benth. Native ORTE2

  thinleaved owl's-clover · Scrophulariaceae 6 counties
• 
  Orthocarpus tolmiei Hook. & Arn. Native ORTO

  Tolmie's owl's-clover · Scrophulariaceae 6 counties
• 
  Orthocarpus tolmiei Hook. & Arn. ssp. tolmiei Native ORTOT

  Tolmie's owl's-clover · Scrophulariaceae 2 counties
• 
  Oryzopsis asperifolia Michx. Native ORAS

  roughleaf ricegrass · Poaceae 2 counties
• 
  Osmorhiza berteroi DC. Native OSBE

  sweetcicely · Apiaceae 33 counties
• 
  Osmorhiza depauperata Phil. Native OSDE

  bluntseed sweetroot · Apiaceae 20 counties
• 
  Osmorhiza occidentalis (Nutt. ex Torr. & A. Gray) Torr. Native OSOC

  western sweetroot · Apiaceae 27 counties
• 
  Osmorhiza purpurea (J.M. Coult. & Rose) Suksd. Native OSPU

  purple sweetroot · Apiaceae 11 counties