Oklahoma

• Adair 40001
  462 taxa Open ↗
• Alfalfa 40003
  443 taxa Open ↗
• Atoka 40005
  275 taxa Open ↗
• Beaver 40007
  382 taxa Open ↗
• Beckham 40009
  298 taxa Open ↗
• Blaine 40011
  437 taxa Open ↗
• Bryan 40013
  935 taxa Open ↗
• Caddo 40015
  574 taxa Open ↗
• Canadian 40017
  444 taxa Open ↗
• Carter 40019
  424 taxa Open ↗

Showing 1,851–1,900 of 2,400 (native).

• 
  Ranunculus recurvatus Poir. var. recurvatus Native RARER2

  blisterwort · Ranunculaceae 5 counties
• 
  Ranunculus sceleratus L. Native RASC3

  cursed buttercup · Ranunculaceae 14 counties
• 
  Ranunculus sceleratus L. var. sceleratus Native RASCS

  cursed buttercup · Ranunculaceae 14 counties
• 
  Ratibida columnifera (Nutt.) Wooton & Standl. Native RACO3

  upright prairie coneflower · Asteraceae 44 counties
• 
  Ratibida pinnata (Vent.) Barnhart Native RAPI

  pinnate prairie coneflower · Asteraceae 10 counties
• 
  Ratibida tagetes (James) Barnhart Native RATA

  green prairie coneflower · Asteraceae 4 counties
• 
  Rayjacksonia annua (Rydb.) R.L. Hartm. & M.A. Lane Native RAAN2

  viscid tansyaster · Asteraceae 9 counties
• 
  Redfieldia flexuosa (Thurb.) Vasey Native REFL

  blowout grass · Poaceae 5 counties
• 
  Reverchonia arenaria A. Gray Native REAR

  sand reverchonia · Euphorbiaceae 4 counties
• 
  Rhamnus lanceolata Pursh Native RHLA

  lanceleaf buckthorn · Rhamnaceae 1 county
• 
  Rhamnus lanceolata Pursh ssp. glabrata (Gleason) Kartesz & Gandhi Native RHLAG2

  lanceleaf buckthorn · Rhamnaceae 1 county
• 
  Rhexia mariana L. Native RHMA

  Maryland meadowbeauty · Melastomataceae 1 county
• 
  Rhexia mariana L. var. interior (Pennell) Kral & Bostick Native RHMAI

  Maryland meadowbeauty · Melastomataceae 1 county
• 
  Rhexia mariana L. var. mariana Native RHMAM2

  Maryland meadowbeauty · Melastomataceae 1 county
• 
  Rhododendron viscosum (L.) Torr. Native RHVI2

  swamp azalea · Ericaceae 1 county
• 
  Rhus aromatica Aiton Native RHAR4

  fragrant sumac · Anacardiaceae 52 counties
• 
  Rhus aromatica Aiton var. aromatica Native RHARA2

  fragrant sumac · Anacardiaceae 19 counties
• 
  Rhus aromatica Aiton var. serotina (Greene) Rehder Native RHARS

  fragrant sumac · Anacardiaceae 44 counties
• 
  Rhus copallinum L. Native RHCO

  winged sumac · Anacardiaceae 30 counties
• 
  Rhus copallinum L. var. latifolia Engl. Native RHCOL2

  winged sumac · Anacardiaceae 30 counties
• 
  Rhus glabra L. Native RHGL

  smooth sumac · Anacardiaceae 39 counties
• 
  Rhus lanceolata (A. Gray) Britton Native RHLA3

  prairie sumac · Anacardiaceae 14 counties
• 
  Rhus microphylla Engelm. ex A. Gray Native RHMI3

  littleleaf sumac · Anacardiaceae 1 county
• 
  Rhus trilobata Nutt. Native RHTR

  skunkbush sumac · Anacardiaceae 9 counties
• 
  Rhus trilobata Nutt. var. pilosissima Engelm. Native RHTRP

  pubescent skunkbush sumac · Anacardiaceae 7 counties
• 
  Rhus trilobata Nutt. var. trilobata Native RHTRT

  skunkbush sumac · Anacardiaceae 4 counties
• 
  Rhynchosia latifolia Nutt. ex Torr. & A. Gray Native RHLA5

  prairie snoutbean · Fabaceae 1 county
• 
  Rhynchosida physocalyx (A. Gray) Fryxell Native RHPH2

  buffpetal · Malvaceae 1 county
• 
  Rhynchospora capitellata (Michx.) Vahl Native RHCA12

  brownish beaksedge · Cyperaceae 1 county
• 
  Rhynchospora glomerata (L.) Vahl Native RHGL3

  clustered beaksedge · Cyperaceae 1 county
• 
  Rhynchospora harveyi W. Boott Native RHHA

  Harvey's beaksedge · Cyperaceae 1 county
• 
  Rhynchospora harveyi W. Boott var. harveyi Native RHHAH

  Harvey's beaksedge · Cyperaceae 1 county
• 
  Rhynchospora inexpansa (Michx.) Vahl Native RHIN4

  nodding beaksedge · Cyperaceae 1 county
• 
  Rhynchospora macrostachya Torr. ex A. Gray Native RHMA6

  tall horned beaksedge · Cyperaceae 1 county
• 
  Rhynchospora nivea Boeckeler Native RHNI2

  showy whitetop · Cyperaceae 2 counties
• 
  Rhynchospora recognita (Gale) Kral Native RHRE8

  globe beaksedge · Cyperaceae 2 counties
• 
  Ribes aureum Pursh Native RIAU

  golden currant · Grossulariaceae 29 counties
• 
  Ribes aureum Pursh var. villosum DC. Native RIAUV

  golden currant · Grossulariaceae 29 counties
• 
  Ribes cereum Douglas Native RICE

  wax currant · Grossulariaceae 1 county
• 
  Ribes cereum Douglas var. pedicellare W.H. Brewer & S. Watson Native RICEP

  whisky currant · Grossulariaceae 1 county
• 
  Ribes missouriense Nutt. Native RIMI

  Missouri gooseberry · Grossulariaceae 3 counties
• 
  Robinia hispida L. Native ROHI

  bristly locust · Fabaceae 4 counties
• 
  Robinia hispida L. var. hispida Native ROHIH

  bristly locust · Fabaceae 3 counties
• 
  Robinia pseudoacacia L. Native ROPS

  black locust · Fabaceae 26 counties
• 
  Rorippa palustris (L.) Besser Native ROPA2

  bog yellowcress · Brassicaceae 15 counties
• 
  Rorippa palustris (L.) Besser ssp. fernaldiana (Butters & Abbe) Jonsell Native ROPAF2

  Fernald's yellowcress · Brassicaceae 15 counties
• 
  Rorippa sessiliflora (Nutt.) Hitchc. Native ROSE

  stalkless yellowcress · Brassicaceae 18 counties
• 
  Rorippa sinuata (Nutt.) Hitchc. Native ROSI2

  spreading yellowcress · Brassicaceae 14 counties
• 
  Rosa arkansana Porter Native ROAR3

  prairie rose · Rosaceae 5 counties
• 
  Rosa arkansana Porter var. suffulta (Greene) Cockerell Native ROARS

  prairie rose · Rosaceae 5 counties