North Carolina

• Alamance 37001
  795 taxa Open ↗
• Alexander 37003
  646 taxa Open ↗
• Alleghany 37005
  795 taxa Open ↗
• Anson 37007
  773 taxa Open ↗
• Ashe 37009
  929 taxa Open ↗
• Avery 37011
  891 taxa Open ↗
• Beaufort 37013
  934 taxa Open ↗
• Bertie 37015
  770 taxa Open ↗
• Bladen 37017
  1,039 taxa Open ↗
• Brunswick 37019
  1,299 taxa Open ↗

Showing 2,301–2,350 of 3,867.

• 
  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae 6 counties
• 
  Oligoneuron rigidum (L.) Small var. rigidum Native OLRIR

  stiff goldenrod · Asteraceae 6 counties
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 46 counties
• 
  Onosmodium virginianum (L.) A. DC. Native ONVI2

  wild Job's tears · Boraginaceae 11 counties
• 
  Ophioglossum crotalophoroides Walter Native OPCR

  bulbous adderstongue · Ophioglossaceae 1 county
• 
  Ophioglossum crotalophoroides Walter var. crotalophoroides Native OPCRC

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

  southern adderstongue · Ophioglossaceae 29 counties
• 
  Oplismenus hirtellus (L.) P. Beauv. Both OPHI

  basketgrass · Poaceae 3 counties
• 
  Oplismenus hirtellus (L.) P. Beauv. ssp. setarius (Lam.) Mez ex Ekman Native OPHIS

  basketgrass · Poaceae 3 counties
• 
  Opuntia ficus-indica (L.) Mill. Introduced OPFI

  Barbary fig · Cactaceae 1 county
• 
  Opuntia humifusa (Raf.) Raf. Native OPHU

  devil's-tongue · Cactaceae 28 counties
• 
  Opuntia pusilla (Haw.) Haw. Native OPPU2

  cockspur pricklypear · Cactaceae 3 counties
• 
  Orbexilum lupinellum (Michx.) Isely Native ORLU3

  piedmont leather-root · Fabaceae 7 counties
• ⚘
  Orbexilum macrophyllum (Rowlee) Rydb. Native ORMA2

  largeleaf leather-root · Fabaceae 1 county
• 
  Orbexilum onobrychis (Nutt.) Rydb. Native ORON

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

  Sampson's snakeroot · Fabaceae 54 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. var. pedunculatum Native ORPEP2

  Sampson's snakeroot · Fabaceae 3 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. var. psoralioides (Walter) Isely Native ORPEP

  Sampson's snakeroot · Fabaceae 51 counties
• 
  Ornithogalum nutans L. Introduced ORNU

  drooping star of Bethlehem · Liliaceae 1 county
• 
  Ornithogalum umbellatum L. Introduced ORUM

  star of Bethlehem · Liliaceae 21 counties
• 
  Orobanche minor Sm. Introduced ORMI

  hellroot · Orobanchaceae 2 counties
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 27 counties
• 
  Orontium aquaticum L. Native ORAQ

  goldenclub · Araceae 39 counties
• ⚘
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray Native OSAM

  devilwood · Oleaceae 7 counties
• ⚘
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray var. americanus Native OSAMA

  devilwood · Oleaceae 7 counties
• 
  Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCL

  Clayton's sweetroot · Apiaceae 19 counties
• 
  Osmorhiza longistylis (Torr.) DC. Native OSLO

  longstyle sweetroot · Apiaceae 14 counties
• 
  Osmunda cinnamomea L. Native OSCI

  cinnamon fern · Osmundaceae 68 counties
• 
  Osmunda cinnamomea L. var. cinnamomea Native OSCIC

  cinnamon fern · Osmundaceae 3 counties
• 
  Osmunda claytoniana L. Native OSCL2

  interrupted fern · Osmundaceae 21 counties
• 
  Osmunda regalis L. Native OSRE

  royal fern · Osmundaceae 66 counties
• 
  Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRES

  royal fern · Osmundaceae 66 counties
• 
  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae 37 counties
• 
  Oxalis corniculata L. Native OXCO

  creeping woodsorrel · Oxalidaceae 7 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

  slender yellow woodsorrel · Oxalidaceae 79 counties
• 
  Oxalis grandis Small Native OXGR

  great yellow woodsorrel · Oxalidaceae 19 counties
• 
  Oxalis montana Raf. Native OXMO

  mountain woodsorrel · Oxalidaceae 15 counties
• 
  Oxalis priceae Small Native OXPR

  tufted yellow woodsorrel · Oxalidaceae 8 counties
• 
  Oxalis priceae Small ssp. colorea (Small) Eiten Native OXPRC

  tufted yellow woodsorrel · Oxalidaceae 8 counties
• 
  Oxalis rubra A. St.-Hil. Introduced OXRU

  windowbox woodsorrel · Oxalidaceae 16 counties
• 
  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae 17 counties
• 
  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae 40 counties
• 
  Oxydendrum arboreum (L.) DC. Native OXAR

  sourwood · Ericaceae 83 counties
• 
  Oxypolis canbyi (J.M. Coult. & Rose) Fernald Native OXCA2

  Canby's cowbane · Apiaceae 1 county
• 
  Oxypolis filiformis (Walter) Britton Native OXFI

  water cowbane · Apiaceae 6 counties
• 
  Oxypolis rigidior (L.) Raf. Native OXRI

  stiff cowbane · Apiaceae 37 counties
• 
  Oxypolis ternata (Nutt.) A. Heller Native OXTE

  piedmont cowbane · Apiaceae 11 counties
• 
  Pachysandra procumbens Michx. Native PAPR7

  Allegheny-spurge · Buxaceae 1 county
• 
  Packera anonyma (Alph. Wood) W.A. Weber & Á. Löve Native PAAN6

  Small's ragwort · Asteraceae 79 counties
• 
  Packera aurea (L.) Á. Löve & D. Löve Native PAAU3

  golden ragwort · Asteraceae 41 counties