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 2,451–2,500 of 3,775.

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  Pedicularis canadensis L. Native PECA

  Canadian lousewort · Scrophulariaceae 62 counties
• 
  Pedicularis canadensis L. ssp. canadensis Native PECAC3

  Canadian lousewort · Scrophulariaceae 62 counties
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  Pedicularis lanceolata Michx. Native PELA2

  swamp lousewort · Scrophulariaceae 38 counties
• 
  Pediomelum argophyllum (Pursh) J. Grimes Native PEAR6

  silverleaf Indian breadroot · Fabaceae 1 county
• 
  Pellaea atropurpurea (L.) Link Native PEAT2

  purple cliffbrake · Pteridaceae 21 counties
• 
  Pellaea glabella Mett. ex Kuhn Native PEGL

  smooth cliffbrake · Pteridaceae 32 counties
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  Pellaea glabella Mett. ex Kuhn ssp. glabella Native PEGLG

  smooth cliffbrake · Pteridaceae 32 counties
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  Peltandra virginica (L.) Schott Native PEVI

  green arrow arum · Araceae 27 counties
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  Pennisetum alopecuroides (L.) Spreng. Introduced PEAL

  Chinese fountaingrass · Poaceae 1 county
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  Pennisetum glaucum (L.) R. Br. Introduced PEGL2

  pearl millet · Poaceae 102 counties
• 
  Penstemon alluviorum Pennell Native PEAL4

  lowland beardtongue · Scrophulariaceae 3 counties
• 
  Penstemon arkansanus Pennell Native PEAR4

  Arkansas beardtongue · Scrophulariaceae 3 counties
• 
  Penstemon calycosus Small Native PECA7

  longsepal beardtongue · Scrophulariaceae 62 counties
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  Penstemon canescens (Britton) Britton Native PECA8

  eastern gray beardtongue · Scrophulariaceae 1 county
• 
  Penstemon cobaea Nutt. Native PECO4

  cobaea beardtongue · Scrophulariaceae 1 county
• 
  Penstemon deamii Pennell Native PEDE10

  Deam's beardtongue · Scrophulariaceae 7 counties
• 
  Penstemon digitalis Nutt. ex Sims Native PEDI

  foxglove beardtongue · Scrophulariaceae 89 counties
• 
  Penstemon gracilis Nutt. Native PEGR5

  lilac penstemon · Scrophulariaceae 2 counties
• 
  Penstemon gracilis Nutt. var. wisconsinensis (Pennell) Fassett Native PEGRW2

  Wisconsin penstemon · Scrophulariaceae 1 county
• 
  Penstemon grandiflorus Nutt. Native PEGR7

  large beardtongue · Scrophulariaceae 4 counties
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  Penstemon hirsutus (L.) Willd. Native PEHI

  hairy beardtongue · Scrophulariaceae 24 counties
• 
  Penstemon pallidus Small Native PEPA7

  pale beardtongue · Scrophulariaceae 79 counties
• 
  Penstemon tenuiflorus Pennell Native PETE4

  eastern whiteflower beardtongue · Scrophulariaceae 1 county
• 
  Penstemon tubaeflorus Nutt. Native PETU

  white wand beardtongue · Scrophulariaceae 19 counties
• 
  Penstemon tubaeflorus Nutt. var. tubaeflorus Native PETUT

  white wand beardtongue · Scrophulariaceae 19 counties
• 
  Penthorum sedoides L. Native PESE6

  ditch stonecrop · Crassulaceae 100 counties
• 
  Perideridia americana (Nutt. ex DC.) Rchb. Native PEAM2

  eastern yampah · Apiaceae 43 counties
• 
  Perilla frutescens (L.) Britton Introduced PEFR4

  beefsteakplant · Lamiaceae 38 counties
• 
  Perilla frutescens (L.) Britton var. crispa (Benth.) Deane Introduced PEFRC2

  beefsteakplant · Lamiaceae 2 counties
• 
  Perilla frutescens (L.) Britton var. frutescens Introduced PEFRF2

  beefsteakplant · Lamiaceae 3 counties
• 
  Petasites hybridus (L.) G. Gaertn., B. Mey. & Scherb. Introduced PEHY

  pestilence wort · Asteraceae 2 counties
• 
  Petrorhagia saxifraga (L.) Link Introduced PESA9

  saxifrage pink · Caryophyllaceae 1 county
• 
  Petunia axillaris (Lam.) Britton, Sterns & Poggenb. Introduced PEAX

  large white petunia · Solanaceae 14 counties
• 
  Petunia integrifolia (Hook.) Schinz & Thell. Introduced PEIN5

  violetflower petunia · Solanaceae 6 counties
• ⚘
  Petunia ×atkinsiana D. Don ex Loudon [axillaris × integrifolia] Introduced PEAT7

  petunia · Solanaceae 6 counties
• 
  Phacelia bipinnatifida Michx. Native PHBI2

  fernleaf phacelia · Hydrophyllaceae 30 counties
• 
  Phacelia gilioides Brand Native PHGI

  Brand's phacelia · Hydrophyllaceae 4 counties
• 
  Phacelia purshii Buckley Native PHPU3

  Miami mist · Hydrophyllaceae 22 counties
• 
  Phacelia ranunculacea (Nutt.) Constance Native PHRA3

  oceanblue phacelia · Hydrophyllaceae 9 counties
• 
  Phalaris arundinacea L. Native PHAR3

  reed canarygrass · Poaceae 74 counties
• 
  Phalaris canariensis L. Introduced PHCA5

  annual canarygrass · Poaceae 15 counties
• 
  Phaseolus polystachios (L.) Britton, Sterns & Poggenb. Native PHPO2

  thicket bean · Fabaceae 16 counties
• 
  Phaseolus polystachios (L.) Britton, Sterns & Poggenb. var. polystachios Native PHPOP

  thicket bean · Fabaceae 16 counties
• 
  Phegopteris connectilis (Michx.) Watt Native PHCO24

  long beechfern · Thelypteridaceae 8 counties
• 
  Phegopteris hexagonoptera (Michx.) Fée Native PHHE11

  broad beechfern · Thelypteridaceae 61 counties
• 
  Phemeranthus calycinus (Engelm.) Kiger Native PHCA48

  largeflower fameflower · Portulacaceae 2 counties
• 
  Phemeranthus parviflorus (Nutt.) Kiger Native PHPA29

  sunbright · Portulacaceae 4 counties
• 
  Phemeranthus rugospermus (Holz.) Kiger Native PHRU8

  prairie fameflower · Portulacaceae 14 counties
• 
  Philadelphus coronarius L. Introduced PHCO7

  sweet mock orange · Hydrangeaceae 1 county
• 
  Philadelphus inodorus L. Native PHIN5

  scentless mock orange · Hydrangeaceae 1 county