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 2,351–2,400 of 3,934.

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  Opuntia ficus-indica (L.) Mill. Introduced OPFI

  Barbary fig · 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
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  Orbexilum simplex (Nutt. ex Torr. & A. Gray) Rydb. Native ORSI

  singlestem leather-root · Fabaceae 2 counties
• 
  Ornithogalum nutans L. Introduced ORNU

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

  star of Bethlehem · Liliaceae 8 counties
• 
  Orobanche uniflora L. Native ORUN

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

  goldenclub · Araceae 27 counties
• 
  Oryza sativa L. Introduced ORSA

  rice · Poaceae 2 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 debilis Kunth Introduced OXDE3

  pink woodsorrel · Oxalidaceae 2 counties
• 
  Oxalis debilis Kunth var. corymbosa (DC.) Lourteig Introduced OXDEC

  pink woodsorrel · Oxalidaceae 2 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

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

  great yellow woodsorrel · Oxalidaceae 7 counties
• 
  Oxalis priceae Small Native OXPR

  tufted yellow woodsorrel · Oxalidaceae 3 counties
• 
  Oxalis priceae Small ssp. priceae Native OXPRP

  tufted yellow woodsorrel · Oxalidaceae 2 counties
• 
  Oxalis priceae Small ssp. texana (Small) Eiten Native OXPRT

  Texas woodsorrel · Oxalidaceae 1 county
• 
  Oxalis rubra A. St.-Hil. Introduced OXRU

  windowbox woodsorrel · Oxalidaceae 6 counties
• 
  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae 22 counties
• 
  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae 18 counties
• 
  Oxycaryum cubense (Poepp. & Kunth) Lye Native OXCU2

  Cuban bulrush · Cyperaceae 2 counties
• 
  Oxydendrum arboreum (L.) DC. Native OXAR

  sourwood · Ericaceae 59 counties
• 
  Oxypolis filiformis (Walter) Britton Native OXFI

  water cowbane · Apiaceae 9 counties
• 
  Oxypolis rigidior (L.) Raf. Native OXRI

  stiff cowbane · Apiaceae 14 counties
• 
  Oxypolis ternata (Nutt.) A. Heller Native OXTE

  piedmont cowbane · Apiaceae 1 county
• 
  Pachysandra procumbens Michx. Native PAPR7

  Allegheny-spurge · Buxaceae 23 counties
• 
  Packera anonyma (Alph. Wood) W.A. Weber & Á. Löve Native PAAN6

  Small's ragwort · Asteraceae 18 counties
• 
  Packera aurea (L.) Á. Löve & D. Löve Native PAAU3

  golden ragwort · Asteraceae 2 counties
• 
  Packera glabella (Poir.) C. Jeffrey Native PAGL17

  butterweed · Asteraceae 16 counties
• 
  Packera obovata (Muhl. ex Willd.) W.A. Weber & Á. Löve Native PAOB6

  roundleaf ragwort · Asteraceae 13 counties
• 
  Packera paupercula (Michx.) Á. Löve & D. Löve Native PAPA20

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

  woolly ragwort · Asteraceae 10 counties
• 
  Panax quinquefolius L. Native PAQU

  American ginseng · Araliaceae 25 counties
• 
  Panicum amarum Elliott Native PAAM2

  bitter panicgrass · Poaceae 5 counties
• 
  Panicum amarum Elliott var. amarulum (Hitchc. & Chase) P.G. Palmer Native PAAMA2

  coastal panicgrass · Poaceae 1 county
• 
  Panicum amarum Elliott var. amarum Native PAAMA3

  bitter panicgrass · Poaceae 1 county
• 
  Panicum anceps Michx. Native PAAN

  beaked panicgrass · Poaceae 19 counties
• 
  Panicum capillare L. Native PACA6

  witchgrass · Poaceae 5 counties