Alabama

• Autauga 01001
  646 taxa Open ↗
• Baldwin 01003
  1,339 taxa Open ↗
• Barbour 01005
  390 taxa Open ↗
• Bibb 01007
  807 taxa Open ↗
• Blount 01009
  305 taxa Open ↗
• Bullock 01011
  262 taxa Open ↗
• Butler 01013
  347 taxa Open ↗
• Calhoun 01015
  525 taxa Open ↗
• Chambers 01017
  265 taxa Open ↗
• Cherokee 01019
  402 taxa Open ↗

Showing 1,901–1,950 of 3,255 (native).

• 
  Oenothera grandiflora L'Hér. ex Aiton Native OEGR4

  largeflower evening primrose · Onagraceae 4 counties
• 
  Oenothera heterophylla Spach Native OEHE3

  variableleaf evening primrose · Onagraceae 3 counties
• 
  Oenothera heterophylla Spach ssp. orientalis W. Dietr., P.H. Raven & W.L. Wagner Native OEHEO

  Oriental evening primrose · Onagraceae 3 counties
• 
  Oenothera humifusa Nutt. Native OEHU

  seabeach evening primrose · Onagraceae 4 counties
• 
  Oenothera laciniata Hill Native OELA

  cutleaf evening primrose · Onagraceae 45 counties
• 
  Oenothera linifolia Nutt. Native OELI

  threadleaf evening primrose · Onagraceae 3 counties
• 
  Oenothera nutans Atk. & Bartlett Native OENU2

  nodding evening primrose · Onagraceae 1 county
• 
  Oenothera pilosella Raf. Native OEPI2

  meadow evening primrose · Onagraceae 1 county
• 
  Oenothera simulans (Small) W.L. Wagner & Hoch Native OESI

  southern beeblossom · Onagraceae 4 counties
• 
  Oenothera speciosa Nutt. Native OESP2

  pinkladies · Onagraceae 18 counties
• 
  Oenothera triloba Nutt. Native OETR2

  stemless evening primrose · Onagraceae 1 county
• 
  Oldenlandia boscii (DC.) Chapm. Native OLBO

  Bosc's mille graines · Rubiaceae 3 counties
• 
  Oldenlandia corymbosa L. Native OLCO

  flat-top mille graines · Rubiaceae 2 counties
• 
  Oldenlandia uniflora L. Native OLUN

  clustered mille graines · Rubiaceae 6 counties
• 
  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae 3 counties
• 
  Oligoneuron rigidum (L.) Small var. glabratum (E.L. Braun) G.L. Nesom Native OLRIG

  stiff goldenrod · Asteraceae 3 counties
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 61 counties
• 
  Onosmodium bejariense DC. ex A. DC. Native ONBE

  soft-hair marbleseed · Boraginaceae 5 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. bejariense Native ONBEB

  soft-hair marbleseed · Boraginaceae 4 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. hispidissimum (Mack.) B.L. Turner Native ONBEH

  softhair marbleseed · Boraginaceae 3 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. occidentale (Mack.) B.L. Turner Native ONBEO

  western marbleseed · Boraginaceae 3 counties
• 
  Onosmodium decipiens J. Allison Native ONDE2

  deceptive marbleseed · Boraginaceae 1 county
• 
  Onosmodium virginianum (L.) A. DC. Native ONVI2

  wild Job's tears · Boraginaceae 13 counties
• 
  Ophioglossum crotalophoroides Walter Native OPCR

  bulbous adderstongue · Ophioglossaceae 9 counties
• 
  Ophioglossum engelmannii Prantl Native OPEN

  limestone adderstongue · Ophioglossaceae 23 counties
• 
  Ophioglossum nudicaule L. f. Native OPNU

  least adderstongue · Ophioglossaceae 8 counties
• 
  Ophioglossum petiolatum Hook. Native OPPE2

  longstem adderstongue · Ophioglossaceae 2 counties
• 
  Ophioglossum vulgatum L. Native OPVU

  southern adderstongue · Ophioglossaceae 21 counties
• 
  Oplismenus hirtellus (L.) P. Beauv. ssp. setarius (Lam.) Mez ex Ekman Native OPHIS

  basketgrass · Poaceae 9 counties
• 
  Opuntia austrina Small Native OPAU3

  devil's-tongue · Cactaceae 1 county
• 
  Opuntia humifusa (Raf.) Raf. Native OPHU

  devil's-tongue · Cactaceae 5 counties
• 
  Opuntia pusilla (Haw.) Haw. Native OPPU2

  cockspur pricklypear · Cactaceae 4 counties
• 
  Orbexilum lupinellum (Michx.) Isely Native ORLU3

  piedmont leather-root · Fabaceae 2 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. Native ORPE

  Sampson's snakeroot · Fabaceae 13 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. var. pedunculatum Native ORPEP2

  Sampson's snakeroot · Fabaceae 13 counties
• 
  Orbexilum simplex (Nutt. ex Torr. & A. Gray) Rydb. Native ORSI

  singlestem leather-root · Fabaceae 2 counties
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 7 counties
• 
  Orontium aquaticum L. Native ORAQ

  goldenclub · Araceae 27 counties
• ⚘
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray Native OSAM

  devilwood · Oleaceae 10 counties
• ⚘
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray var. americanus Native OSAMA

  devilwood · Oleaceae 9 counties
• 
  Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCL

  Clayton's sweetroot · Apiaceae 2 counties
• 
  Osmorhiza longistylis (Torr.) DC. Native OSLO

  longstyle sweetroot · Apiaceae 13 counties
• 
  Osmunda cinnamomea L. Native OSCI

  cinnamon fern · Osmundaceae 57 counties
• 
  Osmunda cinnamomea L. var. cinnamomea Native OSCIC

  cinnamon fern · Osmundaceae 2 counties
• 
  Osmunda regalis L. Native OSRE

  royal fern · Osmundaceae 63 counties
• 
  Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRES

  royal fern · Osmundaceae 63 counties
• 
  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae 63 counties
• 
  Oxalis corniculata L. Native OXCO

  creeping woodsorrel · Oxalidaceae 9 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

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

  great yellow woodsorrel · Oxalidaceae 7 counties