Mississippi

• Adams 28001
  382 taxa Open ↗
• Alcorn 28003
  268 taxa Open ↗
• Amite 28005
  586 taxa Open ↗
• Attala 28007
  321 taxa Open ↗
• Benton 28009
  327 taxa Open ↗
• Bolivar 28011
  295 taxa Open ↗
• Calhoun 28013
  294 taxa Open ↗
• Carroll 28015
  347 taxa Open ↗
• Chickasaw 28017
  375 taxa Open ↗
• Choctaw 28019
  524 taxa Open ↗

Showing 1,701–1,750 of 2,911 (native).

• 
  Oenothera simulans (Small) W.L. Wagner & Hoch Native OESI

  southern beeblossom · Onagraceae 6 counties
• 
  Oenothera spachiana Torr. & A. Gray Native OESP

  Spach's evening primrose · Onagraceae 2 counties
• 
  Oenothera speciosa Nutt. Native OESP2

  pinkladies · Onagraceae 7 counties
• 
  Oenothera triloba Nutt. Native OETR2

  stemless evening primrose · Onagraceae 5 counties
• 
  Oenothera villosa Thunb. Native OEVI

  hairy evening primrose · Onagraceae 2 counties
• 
  Oenothera villosa Thunb. ssp. villosa Native OEVIV

  hairy evening primrose · Onagraceae 2 counties
• 
  Oldenlandia boscii (DC.) Chapm. Native OLBO

  Bosc's mille graines · Rubiaceae 9 counties
• 
  Oldenlandia corymbosa L. Native OLCO

  flat-top mille graines · Rubiaceae 1 county
• 
  Oldenlandia uniflora L. Native OLUN

  clustered mille graines · Rubiaceae 9 counties
• 
  Oligoneuron nitidum (Torr. & A. Gray) Small Native OLNI

  shiny goldenrod · Asteraceae 4 counties
• 
  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae 4 counties
• 
  Oligoneuron rigidum (L.) Small var. glabratum (E.L. Braun) G.L. Nesom Native OLRIG

  stiff goldenrod · Asteraceae 4 counties
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 40 counties
• 
  Onosmodium bejariense DC. ex A. DC. Native ONBE

  soft-hair marbleseed · Boraginaceae 5 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. hispidissimum (Mack.) B.L. Turner Native ONBEH

  softhair marbleseed · Boraginaceae 5 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. occidentale (Mack.) B.L. Turner Native ONBEO

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

  wild Job's tears · Boraginaceae 12 counties
• 
  Ophioglossum crotalophoroides Walter Native OPCR

  bulbous adderstongue · Ophioglossaceae 4 counties
• 
  Ophioglossum crotalophoroides Walter var. crotalophoroides Native OPCRC

  bulbous adderstongue · Ophioglossaceae 3 counties
• 
  Ophioglossum engelmannii Prantl Native OPEN

  limestone adderstongue · Ophioglossaceae 6 counties
• 
  Ophioglossum nudicaule L. f. Native OPNU

  least adderstongue · Ophioglossaceae 1 county
• 
  Ophioglossum petiolatum Hook. Native OPPE2

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

  southern adderstongue · Ophioglossaceae 10 counties
• 
  Oplismenus hirtellus (L.) P. Beauv. ssp. setarius (Lam.) Mez ex Ekman Native OPHIS

  basketgrass · Poaceae 16 counties
• 
  Opuntia austrina Small Native OPAU3

  devil's-tongue · Cactaceae 2 counties
• 
  Opuntia humifusa (Raf.) Raf. Native OPHU

  devil's-tongue · Cactaceae 11 counties
• 
  Opuntia pusilla (Haw.) Haw. Native OPPU2

  cockspur pricklypear · Cactaceae 4 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. Native ORPE

  Sampson's snakeroot · Fabaceae 34 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. var. pedunculatum Native ORPEP2

  Sampson's snakeroot · Fabaceae 34 counties
• 
  Orbexilum simplex (Nutt. ex Torr. & A. Gray) Rydb. Native ORSI

  singlestem leather-root · Fabaceae 6 counties
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 1 county
• 
  Orontium aquaticum L. Native ORAQ

  goldenclub · Araceae 23 counties
• ⚘
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray Native OSAM

  devilwood · Oleaceae 22 counties
• ⚘
  Osmanthus americanus (L.) Benth. & Hook. f. ex A. Gray var. americanus Native OSAMA

  devilwood · Oleaceae 22 counties
• 
  Osmorhiza longistylis (Torr.) DC. Native OSLO

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

  cinnamon fern · Osmundaceae 32 counties
• 
  Osmunda cinnamomea L. var. cinnamomea Native OSCIC

  cinnamon fern · Osmundaceae 1 county
• 
  Osmunda regalis L. Native OSRE

  royal fern · Osmundaceae 42 counties
• 
  Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRES

  royal fern · Osmundaceae 42 counties
• 
  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae 51 counties
• 
  Oxalis corniculata L. Native OXCO

  creeping woodsorrel · Oxalidaceae 4 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

  slender yellow woodsorrel · Oxalidaceae 26 counties
• 
  Oxalis grandis Small Native OXGR

  great yellow woodsorrel · Oxalidaceae 1 county
• 
  Oxalis priceae Small Native OXPR

  tufted yellow woodsorrel · Oxalidaceae 8 counties
• 
  Oxalis priceae Small ssp. priceae Native OXPRP

  tufted yellow woodsorrel · Oxalidaceae 8 counties
• 
  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae 32 counties
• 
  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae 30 counties
• 
  Oxycaryum cubense (Poepp. & Kunth) Lye Native OXCU2

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

  sourwood · Ericaceae 42 counties
• 
  Oxypolis filiformis (Walter) Britton Native OXFI

  water cowbane · Apiaceae 13 counties