Virginia

• Accomack 51001
  1,201 taxa Open ↗
• Albemarle 51003
  1,479 taxa Open ↗
• Alexandria (city) 51510
  1 taxa Open ↗
• Alleghany 51005
  1,296 taxa Open ↗
• Amelia 51007
  1,090 taxa Open ↗
• Amherst 51009
  1,290 taxa Open ↗
• Appomattox 51011
  918 taxa Open ↗
• Arlington 51013
  1,096 taxa Open ↗
• Augusta 51015
  1,556 taxa Open ↗
• Bath 51017
  1,158 taxa Open ↗

Showing 1,751–1,800 of 2,892 (native).

• 
  Oligoneuron rigidum (L.) Small var. rigidum Native OLRIR

  stiff goldenrod · Asteraceae 15 counties
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 100 counties
• 
  Onosmodium bejariense DC. ex A. DC. Native ONBE

  soft-hair marbleseed · Boraginaceae 12 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. hispidissimum (Mack.) B.L. Turner Native ONBEH

  softhair marbleseed · Boraginaceae 12 counties
• 
  Onosmodium virginianum (L.) A. DC. Native ONVI2

  wild Job's tears · Boraginaceae 15 counties
• 
  Ophioglossum engelmannii Prantl Native OPEN

  limestone adderstongue · Ophioglossaceae 11 counties
• 
  Ophioglossum petiolatum Hook. Native OPPE2

  longstem adderstongue · Ophioglossaceae 1 county
• 
  Ophioglossum pusillum Raf. Native OPPU3

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

  southern adderstongue · Ophioglossaceae 63 counties
• 
  Opuntia humifusa (Raf.) Raf. Native OPHU

  devil's-tongue · Cactaceae 62 counties
• 
  Orbexilum onobrychis (Nutt.) Rydb. Native ORON

  French-grass · Fabaceae 1 county
• 
  Orbexilum pedunculatum (Mill.) Rydb. Native ORPE

  Sampson's snakeroot · Fabaceae 28 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. var. psoralioides (Walter) Isely Native ORPEP

  Sampson's snakeroot · Fabaceae 28 counties
• 
  Orobanche ludoviciana Nutt. Native ORLU

  Louisiana broomrape · Orobanchaceae 4 counties
• 
  Orobanche ludoviciana Nutt. ssp. ludoviciana Native ORLUL2

  Louisiana broomrape · Orobanchaceae 4 counties
• 
  Orobanche riparia L.T. Collins Native ORRI

  River Broom-Rape · Orobanchaceae 3 counties
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 55 counties
• 
  Orontium aquaticum L. Native ORAQ

  goldenclub · Araceae 50 counties
• 
  Orthilia secunda (L.) House Native ORSE

  sidebells wintergreen · Pyrolaceae 3 counties
• ⚘
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray Native OSAM

  devilwood · Oleaceae 1 county
• ⚘
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray var. americanus Native OSAMA

  devilwood · Oleaceae 1 county
• 
  Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCL

  Clayton's sweetroot · Apiaceae 54 counties
• 
  Osmorhiza longistylis (Torr.) DC. Native OSLO

  longstyle sweetroot · Apiaceae 61 counties
• 
  Osmunda cinnamomea L. Native OSCI

  cinnamon fern · Osmundaceae 99 counties
• 
  Osmunda claytoniana L. Native OSCL2

  interrupted fern · Osmundaceae 60 counties
• 
  Osmunda regalis L. Native OSRE

  royal fern · Osmundaceae 100 counties
• 
  Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRES

  royal fern · Osmundaceae 100 counties
• ⚘
  Osmunda ×ruggii R. Tryon [claytoniana × regalis] Native OSRU

  osmunda · Osmundaceae 1 county
• 
  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae 72 counties
• 
  Oxalis corniculata L. Native OXCO

  creeping woodsorrel · Oxalidaceae 20 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

  slender yellow woodsorrel · Oxalidaceae 91 counties
• 
  Oxalis grandis Small Native OXGR

  great yellow woodsorrel · Oxalidaceae 27 counties
• 
  Oxalis montana Raf. Native OXMO

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

  common yellow oxalis · Oxalidaceae 7 counties
• 
  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae 77 counties
• 
  Oxydendrum arboreum (L.) DC. Native OXAR

  sourwood · Ericaceae 77 counties
• 
  Oxypolis rigidior (L.) Raf. Native OXRI

  stiff cowbane · Apiaceae 80 counties
• 
  Packera anonyma (Alph. Wood) W.A. Weber & Á. Löve Native PAAN6

  Small's ragwort · Asteraceae 94 counties
• 
  Packera antennariifolia (Britton) W.A. Weber & Á. Löve Native PAAN7

  shale barren ragwort · Asteraceae 13 counties
• 
  Packera aurea (L.) Á. Löve & D. Löve Native PAAU3

  golden ragwort · Asteraceae 90 counties
• 
  Packera millefolium (Torr. & A. Gray) W.A. Weber & Á. Löve Native PAMI25

  piedmont ragwort · Asteraceae 2 counties
• 
  Packera obovata (Muhl. ex Willd.) W.A. Weber & Á. Löve Native PAOB6

  roundleaf ragwort · Asteraceae 54 counties
• 
  Packera paupercula (Michx.) Á. Löve & D. Löve Native PAPA20

  balsam groundsel · Asteraceae 15 counties
• 
  Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

  prairie groundsel · Asteraceae 10 counties
• 
  Packera tomentosa (Michx.) C. Jeffrey Native PATO4

  woolly ragwort · Asteraceae 28 counties
• 
  Panax quinquefolius L. Native PAQU

  American ginseng · Araliaceae 61 counties
• 
  Panax trifolius L. Native PATR2

  dwarf ginseng · Araliaceae 21 counties
• 
  Panicum amarum Elliott Native PAAM2

  bitter panicgrass · Poaceae 25 counties
• 
  Panicum anceps Michx. Native PAAN

  beaked panicgrass · Poaceae 82 counties
• 
  Panicum capillare L. Native PACA6

  witchgrass · Poaceae 42 counties