Illinois

• Adams 17001
  1,183 taxa Open ↗
• Alexander 17003
  1,220 taxa Open ↗
• Bond 17005
  682 taxa Open ↗
• Boone 17007
  1,163 taxa Open ↗
• Brown 17009
  836 taxa Open ↗
• Bureau 17011
  652 taxa Open ↗
• Calhoun 17013
  1,017 taxa Open ↗
• Carroll 17015
  931 taxa Open ↗
• Cass 17017
  1,389 taxa Open ↗
• Champaign 17019
  1,420 taxa Open ↗

Showing 2,851–2,900 of 3,775.

• 
  Quercus shumardii Buckley var. schneckii (Britton) Sarg. Native QUSHS

  Schneck oak · Fagaceae 7 counties
• 
  Quercus shumardii Buckley var. shumardii Native QUSHS2

  Shumard oak · Fagaceae 1 county
• 
  Quercus stellata Wangenh. Native QUST

  post oak · Fagaceae 58 counties
• 
  Quercus texana Buckley Native QUTE

  Nuttall oak · Fagaceae 1 county
• 
  Quercus velutina Lam. Native QUVE

  black oak · Fagaceae 102 counties
• 
  Ranunculus abortivus L. Native RAAB

  littleleaf buttercup · Ranunculaceae 100 counties
• 
  Ranunculus acris L. Both RAAC3

  tall buttercup · Ranunculaceae 18 counties
• 
  Ranunculus acris L. var. acris Introduced RAACA3

  showy buttercup · Ranunculaceae 18 counties
• 
  Ranunculus ambigens S. Watson Native RAAM

  waterplantain spearwort · Ranunculaceae 5 counties
• 
  Ranunculus arvensis L. Introduced RAAR3

  corn buttercup · Ranunculaceae 1 county
• 
  Ranunculus bulbosus L. Introduced RABU

  St. Anthony's turnip · Ranunculaceae 5 counties
• 
  Ranunculus cymbalaria Pursh Native RACY

  alkali buttercup · Ranunculaceae 6 counties
• 
  Ranunculus fascicularis Muhl. ex Bigelow Native RAFA

  early buttercup · Ranunculaceae 64 counties
• 
  Ranunculus ficaria L. Introduced RAFI

  fig buttercup · Ranunculaceae 1 county
• 
  Ranunculus ficaria L. var. bulbifera Marsden-Jones Introduced RAFIB

  fig buttercup · Ranunculaceae 1 county
• 
  Ranunculus flabellaris Raf. Native RAFL

  yellow water buttercup · Ranunculaceae 64 counties
• 
  Ranunculus gmelinii DC. Native RAGM

  Gmelin's buttercup · Ranunculaceae 1 county
• 
  Ranunculus harveyi (A. Gray) Britton Native RAHA

  Harvey's buttercup · Ranunculaceae 5 counties
• 
  Ranunculus hispidus Michx. Native RAHI

  bristly buttercup · Ranunculaceae 97 counties
• 
  Ranunculus hispidus Michx. var. caricetorum (Greene) T. Duncan Native RAHIC

  bristly buttercup · Ranunculaceae 3 counties
• 
  Ranunculus hispidus Michx. var. hispidus Native RAHIH

  bristly buttercup · Ranunculaceae 7 counties
• 
  Ranunculus hispidus Michx. var. nitidus (Chapm.) T. Duncan Native RAHIN

  bristly buttercup · Ranunculaceae 96 counties
• 
  Ranunculus laxicaulis (Torr. & A. Gray) Darby Native RALA2

  Mississippi buttercup · Ranunculaceae 16 counties
• 
  Ranunculus longirostris Godr. Native RALO2

  longbeak buttercup · Ranunculaceae 34 counties
• 
  Ranunculus micranthus Nutt. Native RAMI2

  rock buttercup · Ranunculaceae 40 counties
• 
  Ranunculus parviflorus L. Introduced RAPA3

  smallflower buttercup · Ranunculaceae 1 county
• 
  Ranunculus pensylvanicus L. f. Native RAPE2

  Pennsylvania buttercup · Ranunculaceae 18 counties
• 
  Ranunculus pusillus Poir. Native RAPU

  low spearwort · Ranunculaceae 10 counties
• 
  Ranunculus pusillus Poir. var. pusillus Native RAPUP

  low spearwort · Ranunculaceae 10 counties
• 
  Ranunculus recurvatus Poir. Native RARE2

  blisterwort · Ranunculaceae 65 counties
• 
  Ranunculus recurvatus Poir. var. recurvatus Native RARER2

  blisterwort · Ranunculaceae 65 counties
• 
  Ranunculus repens L. Introduced RARE3

  creeping buttercup · Ranunculaceae 18 counties
• 
  Ranunculus rhomboideus Goldie Native RARH

  Labrador buttercup · Ranunculaceae 8 counties
• 
  Ranunculus sardous Crantz Introduced RASA

  hairy buttercup · Ranunculaceae 7 counties
• 
  Ranunculus sceleratus L. Native RASC3

  cursed buttercup · Ranunculaceae 50 counties
• 
  Ranunculus sceleratus L. var. sceleratus Native RASCS

  cursed buttercup · Ranunculaceae 50 counties
• 
  Ranunculus trichophyllus Chaix Native RATR

  threadleaf crowfoot · Ranunculaceae 28 counties
• 
  Ranunculus trichophyllus Chaix var. trichophyllus Native RATRT

  threadleaf crowfoot · Ranunculaceae 28 counties
• 
  Raphanus raphanistrum L. Introduced RARA2

  wild radish · Brassicaceae 8 counties
• ⚘
  Raphanus sativus L. Introduced RASA2

  cultivated radish · Brassicaceae 9 counties
• 
  Ratibida columnifera (Nutt.) Wooton & Standl. Native RACO3

  upright prairie coneflower · Asteraceae 10 counties
• 
  Ratibida pinnata (Vent.) Barnhart Native RAPI

  pinnate prairie coneflower · Asteraceae 85 counties
• 
  Redfieldia flexuosa (Thurb.) Vasey Native REFL

  blowout grass · Poaceae 1 county
• 
  Reseda alba L. Introduced REAL

  white upright mignonette · Resedaceae 2 counties
• 
  Rhamnus alnifolia L'Hér. Native RHAL

  alderleaf buckthorn · Rhamnaceae 9 counties
• 
  Rhamnus cathartica L. Introduced RHCA3

  common buckthorn · Rhamnaceae 24 counties
• 
  Rhamnus davurica Pall. Introduced RHDA

  Dahurian buckthorn · Rhamnaceae 1 county
• 
  Rhamnus davurica Pall. ssp. davurica Introduced RHDAD2

  Dahurian buckthorn · Rhamnaceae 1 county
• 
  Rhamnus lanceolata Pursh Native RHLA

  lanceleaf buckthorn · Rhamnaceae 46 counties
• 
  Rhamnus lanceolata Pursh ssp. glabrata (Gleason) Kartesz & Gandhi Native RHLAG2

  lanceleaf buckthorn · Rhamnaceae 1 county