West Virginia

• Barbour 54001
  829 taxa Open ↗
• Berkeley 54003
  705 taxa Open ↗
• Boone 54005
  327 taxa Open ↗
• Braxton 54007
  709 taxa Open ↗
• Brooke 54009
  578 taxa Open ↗
• Cabell 54011
  647 taxa Open ↗
• Calhoun 54013
  739 taxa Open ↗
• Clay 54015
  284 taxa Open ↗
• Doddridge 54017
  349 taxa Open ↗
• Fayette 54019
  1,478 taxa Open ↗

Showing 1,301–1,350 of 2,236 (native).

• 
  Oenothera laciniata Hill Native OELA

  cutleaf evening primrose · Onagraceae 15 counties
• 
  Oenothera nutans Atk. & Bartlett Native OENU2

  nodding evening primrose · Onagraceae 1 county
• 
  Oenothera parviflora L. Native OEPA5

  northern evening primrose · Onagraceae 15 counties
• 
  Oenothera perennis L. Native OEPE

  little evening primrose · Onagraceae 28 counties
• 
  Oenothera pilosella Raf. Native OEPI2

  meadow evening primrose · Onagraceae 1 county
• 
  Oenothera pilosella Raf. ssp. pilosella Native OEPIP

  meadow evening primrose · Onagraceae 1 county
• 
  Oenothera speciosa Nutt. Native OESP2

  pinkladies · Onagraceae 4 counties
• 
  Oligoneuron rigidum (L.) Small Native OLRI

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

  stiff goldenrod · Asteraceae 1 county
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 43 counties
• 
  Onosmodium bejariense DC. ex A. DC. Native ONBE

  soft-hair marbleseed · Boraginaceae 11 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. hispidissimum (Mack.) B.L. Turner Native ONBEH

  softhair marbleseed · Boraginaceae 11 counties
• 
  Ophioglossum engelmannii Prantl Native OPEN

  limestone adderstongue · Ophioglossaceae 1 county
• 
  Ophioglossum vulgatum L. Native OPVU

  southern adderstongue · Ophioglossaceae 14 counties
• 
  Opuntia humifusa (Raf.) Raf. Native OPHU

  devil's-tongue · Cactaceae 11 counties
• 
  Orobanche ludoviciana Nutt. Native ORLU

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

  Louisiana broomrape · Orobanchaceae 1 county
• 
  Orobanche riparia L.T. Collins Native ORRI

  River Broom-Rape · Orobanchaceae 1 county
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 26 counties
• 
  Orontium aquaticum L. Native ORAQ

  goldenclub · Araceae 8 counties
• 
  Oryzopsis asperifolia Michx. Native ORAS

  roughleaf ricegrass · Poaceae 1 county
• 
  Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCL

  Clayton's sweetroot · Apiaceae 38 counties
• 
  Osmorhiza longistylis (Torr.) DC. Native OSLO

  longstyle sweetroot · Apiaceae 36 counties
• 
  Osmunda cinnamomea L. Native OSCI

  cinnamon fern · Osmundaceae 29 counties
• 
  Osmunda cinnamomea L. var. cinnamomea Native OSCIC

  cinnamon fern · Osmundaceae 1 county
• 
  Osmunda claytoniana L. Native OSCL2

  interrupted fern · Osmundaceae 36 counties
• 
  Osmunda regalis L. Native OSRE

  royal fern · Osmundaceae 27 counties
• 
  Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRES

  royal fern · Osmundaceae 27 counties
• 
  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae 31 counties
• 
  Oxalis corniculata L. Native OXCO

  creeping woodsorrel · Oxalidaceae 36 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

  slender yellow woodsorrel · Oxalidaceae 1 county
• 
  Oxalis grandis Small Native OXGR

  great yellow woodsorrel · Oxalidaceae 34 counties
• 
  Oxalis montana Raf. Native OXMO

  mountain woodsorrel · Oxalidaceae 14 counties
• 
  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae 51 counties
• 
  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae 39 counties
• 
  Oxydendrum arboreum (L.) DC. Native OXAR

  sourwood · Ericaceae 39 counties
• 
  Oxypolis rigidior (L.) Raf. Native OXRI

  stiff cowbane · Apiaceae 16 counties
• 
  Packera anonyma (Alph. Wood) W.A. Weber & Á. Löve Native PAAN6

  Small's ragwort · Asteraceae 17 counties
• 
  Packera antennariifolia (Britton) W.A. Weber & Á. Löve Native PAAN7

  shale barren ragwort · Asteraceae 8 counties
• 
  Packera aurea (L.) Á. Löve & D. Löve Native PAAU3

  golden ragwort · Asteraceae 34 counties
• 
  Packera obovata (Muhl. ex Willd.) W.A. Weber & Á. Löve Native PAOB6

  roundleaf ragwort · Asteraceae 40 counties
• 
  Packera paupercula (Michx.) Á. Löve & D. Löve Native PAPA20

  balsam groundsel · Asteraceae 4 counties
• 
  Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

  prairie groundsel · Asteraceae 1 county
• 
  Panax quinquefolius L. Native PAQU

  American ginseng · Araliaceae 31 counties
• 
  Panax trifolius L. Native PATR2

  dwarf ginseng · Araliaceae 12 counties
• 
  Panicum amarum Elliott Native PAAM2

  bitter panicgrass · Poaceae 2 counties
• 
  Panicum amarum Elliott var. amarulum (Hitchc. & Chase) P.G. Palmer Native PAAMA2

  coastal panicgrass · Poaceae 2 counties
• 
  Panicum anceps Michx. Native PAAN

  beaked panicgrass · Poaceae 15 counties
• 
  Panicum capillare L. Native PACA6

  witchgrass · Poaceae 19 counties
• 
  Panicum dichotomiflorum Michx. Native PADI

  fall panicgrass · Poaceae 30 counties