Nebraska

• Adams 31001
  203 taxa Open ↗
• Antelope 31003
  382 taxa Open ↗
• Arthur 31005
  158 taxa Open ↗
• Banner 31007
  332 taxa Open ↗
• Blaine 31009
  192 taxa Open ↗
• Boone 31011
  138 taxa Open ↗
• Box Butte 31013
  463 taxa Open ↗
• Boyd 31015
  265 taxa Open ↗
• Brown 31017
  1,124 taxa Open ↗
• Buffalo 31019
  605 taxa Open ↗

Showing 1,401–1,450 of 2,233.

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  Oenothera coronopifolia Torr. & A. Gray Native OECO2

  crownleaf evening primrose · Onagraceae 7 counties
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  Oenothera curtiflora W.L. Wagner & Hoch Native OECU2

  velvetweed · Onagraceae 43 counties
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  Oenothera filiformis (Small) W.L. Wagner & Hoch Native OEFI2

  longflower beeblossom · Onagraceae 16 counties
• 
  Oenothera laciniata Hill Native OELA

  cutleaf evening primrose · Onagraceae 33 counties
• ⚘
  Oenothera latifolia (Rydb.) Munz Native OELA2

  mountain evening primrose · Onagraceae 15 counties
• 
  Oenothera macrocarpa Nutt. Native OEMA

  bigfruit evening primrose · Onagraceae 9 counties
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  Oenothera macrocarpa Nutt. ssp. fremontii (S. Watson) W.L. Wagner Native OEMAF

  Fremont's evening primrose · Onagraceae 3 counties
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  Oenothera macrocarpa Nutt. ssp. macrocarpa Native OEMAM

  bigfruit evening primrose · Onagraceae 8 counties
• 
  Oenothera nuttallii Sweet Native OENU

  Nuttall's evening primrose · Onagraceae 18 counties
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  Oenothera rhombipetala Nutt. ex Torr. & A. Gray Native OERH

  fourpoint evening primrose · Onagraceae 37 counties
• 
  Oenothera speciosa Nutt. Native OESP2

  pinkladies · Onagraceae 6 counties
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  Oenothera suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

  scarlet beeblossom · Onagraceae 43 counties
• 
  Oenothera villosa Thunb. Native OEVI

  hairy evening primrose · Onagraceae 19 counties
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  Oenothera villosa Thunb. ssp. villosa Native OEVIV

  hairy evening primrose · Onagraceae 19 counties
• 
  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae 53 counties
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  Oligoneuron rigidum (L.) Small var. humile (Porter) G.L. Nesom Native OLRIH

  stiff goldenrod · Asteraceae 1 county
• 
  Oligoneuron rigidum (L.) Small var. rigidum Native OLRIR

  stiff goldenrod · Asteraceae 52 counties
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 13 counties
• 
  Onopordum acanthium L. Introduced ONAC

  Scotch cottonthistle · Asteraceae 1 county
• 
  Onosmodium bejariense DC. ex A. DC. Native ONBE

  soft-hair marbleseed · Boraginaceae 28 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. hispidissimum (Mack.) B.L. Turner Native ONBEH

  softhair marbleseed · Boraginaceae 1 county
• 
  Onosmodium bejariense DC. ex A. DC. var. occidentale (Mack.) B.L. Turner Native ONBEO

  western marbleseed · Boraginaceae 28 counties
• 
  Ophioglossum pusillum Raf. Native OPPU3

  northern adderstongue · Ophioglossaceae 1 county
• 
  Opuntia fragilis (Nutt.) Haw. Native OPFR

  brittle pricklypear · Cactaceae 14 counties
• 
  Opuntia macrorhiza Engelm. Native OPMA2

  twistspine pricklypear · Cactaceae 22 counties
• 
  Opuntia macrorhiza Engelm. var. macrorhiza Native OPMAM3

  twistspine pricklypear · Cactaceae 22 counties
• 
  Opuntia polyacantha Haw. Native OPPO

  plains pricklypear · Cactaceae 7 counties
• 
  Opuntia polyacantha Haw. var. polyacantha Native OPPOP

  hairspine pricklypear · Cactaceae 7 counties
• 
  Ornithogalum umbellatum L. Introduced ORUM

  star of Bethlehem · Liliaceae 2 counties
• 
  Orobanche fasciculata Nutt. Native ORFA

  clustered broomrape · Orobanchaceae 11 counties
• 
  Orobanche ludoviciana Nutt. Native ORLU

  Louisiana broomrape · Orobanchaceae 16 counties
• 
  Orobanche ludoviciana Nutt. ssp. ludoviciana Native ORLUL2

  Louisiana broomrape · Orobanchaceae 16 counties
• 
  Orobanche riparia L.T. Collins Native ORRI

  River Broom-Rape · Orobanchaceae 6 counties
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 4 counties
• 
  Orthilia secunda (L.) House Native ORSE

  sidebells wintergreen · Pyrolaceae 2 counties
• 
  Orthocarpus luteus Nutt. Native ORLU2

  yellow owl's-clover · Scrophulariaceae 5 counties
• 
  Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCL

  Clayton's sweetroot · Apiaceae 14 counties
• 
  Osmorhiza longistylis (Torr.) DC. Native OSLO

  longstyle sweetroot · Apiaceae 25 counties
• 
  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae 17 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

  slender yellow woodsorrel · Oxalidaceae 27 counties
• 
  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae 38 counties
• 
  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae 33 counties
• 
  Oxytropis lambertii Pursh Native OXLA3

  purple locoweed · Fabaceae 58 counties
• 
  Oxytropis lambertii Pursh var. lambertii Native OXLAL2

  purple locoweed · Fabaceae 57 counties
• 
  Oxytropis multiceps Nutt. Native OXMU

  Nuttall's oxytrope · Fabaceae 4 counties
• 
  Oxytropis sericea Nutt. Native OXSE

  white locoweed · Fabaceae 11 counties
• 
  Oxytropis sericea Nutt. var. sericea Native OXSES

  white locoweed · Fabaceae 11 counties
• 
  Packera cana (Hook.) W.A. Weber & Á. Löve Native PACA15

  woolly groundsel · Asteraceae 8 counties
• 
  Packera glabella (Poir.) C. Jeffrey Native PAGL17

  butterweed · Asteraceae 3 counties
• 
  Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

  prairie groundsel · Asteraceae 71 counties