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 2,401–2,450 of 3,775.

• 
  Packera paupercula (Michx.) Á. Löve & D. Löve Native PAPA20

  balsam groundsel · Asteraceae 44 counties
• 
  Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

  prairie groundsel · Asteraceae 62 counties
• 
  Panax quinquefolius L. Native PAQU

  American ginseng · Araliaceae 71 counties
• 
  Panicum anceps Michx. Native PAAN

  beaked panicgrass · Poaceae 29 counties
• 
  Panicum capillare L. Native PACA6

  witchgrass · Poaceae 98 counties
• 
  Panicum dichotomiflorum Michx. Native PADI

  fall panicgrass · Poaceae 95 counties
• 
  Panicum dichotomiflorum Michx. var. dichotomiflorum Native PADID

  fall panicgrass · Poaceae 91 counties
• 
  Panicum dichotomiflorum Michx. var. puritanorum Svens. Native PADIP

  fall panicgrass · Poaceae 1 county
• 
  Panicum flexile (Gattinger) Scribn. Native PAFL2

  wiry panicgrass · Poaceae 22 counties
• 
  Panicum gattingeri Nash Native PAGA

  Gattinger's panicgrass · Poaceae 26 counties
• 
  Panicum miliaceum L. Introduced PAMI2

  proso millet · Poaceae 18 counties
• 
  Panicum miliaceum L. ssp. miliaceum Introduced PAMIM

  broomcorn millet · Poaceae 18 counties
• 
  Panicum philadelphicum Bernh. ex Trin. Native PAPH

  Philadelphia panicgrass · Poaceae 21 counties
• 
  Panicum rigidulum Bosc ex Nees Native PARI4

  redtop panicgrass · Poaceae 54 counties
• 
  Panicum rigidulum Bosc ex Nees var. elongatum (Pursh) Lelong Native PARIE2

  redtop panicgrass · Poaceae 1 county
• 
  Panicum rigidulum Bosc ex Nees var. pubescens (Vasey) Lelong Native PARIP

  redtop panicgrass · Poaceae 1 county
• 
  Panicum rigidulum Bosc ex Nees var. rigidulum Native PARIR

  redtop panicgrass · Poaceae 51 counties
• 
  Panicum verrucosum Muhl. Native PAVE2

  warty panicgrass · Poaceae 1 county
• 
  Panicum virgatum L. Native PAVI2

  switchgrass · Poaceae 88 counties
• 
  Panicum virgatum L. var. virgatum Native PAVIV

  switchgrass · Poaceae 88 counties
• 
  Papaver dubium L. Introduced PADU

  blindeyes · Papaveraceae 3 counties
• 
  Papaver rhoeas L. Introduced PARH2

  corn poppy · Papaveraceae 11 counties
• 
  Papaver somniferum L. Introduced PASO2

  opium poppy · Papaveraceae 5 counties
• 
  Parietaria pensylvanica Muhl. ex Willd. Native PAPE5

  Pennsylvania pellitory · Urticaceae 97 counties
• 
  Parnassia glauca Raf. Native PAGL3

  fen grass of Parnassus · Saxifragaceae 23 counties
• 
  Paronychia canadensis (L.) Alph. Wood Native PACA11

  smooth forked nailwort · Caryophyllaceae 63 counties
• 
  Paronychia fastigiata (Raf.) Fernald Native PAFA3

  hairy forked nailwort · Caryophyllaceae 54 counties
• 
  Paronychia fastigiata (Raf.) Fernald var. fastigiata Native PAFAF

  hairy forked nailwort · Caryophyllaceae 3 counties
• 
  Parthenium hysterophorus L. Introduced PAHY

  Santa Maria feverfew · Asteraceae 2 counties
• 
  Parthenium integrifolium L. Native PAIN3

  wild quinine · Asteraceae 73 counties
• 
  Parthenium integrifolium L. var. integrifolium Native PAINI

  wild quinine · Asteraceae 73 counties
• 
  Parthenocissus quinquefolia (L.) Planch. Native PAQU2

  Virginia creeper · Vitaceae 102 counties
• 
  Parthenocissus tricuspidata (Siebold & Zucc.) Planch. Introduced PATR6

  Boston ivy · Vitaceae 2 counties
• 
  Parthenocissus vitacea (Knerr) Hitchc. Native PAVI5

  woodbine · Vitaceae 29 counties
• 
  Pascopyrum smithii (Rydb.) Á. Löve Native PASM

  western wheatgrass · Poaceae 43 counties
• 
  Paspalum bifidum (Bertol.) Nash Native PABI3

  pitchfork crowngrass · Poaceae 1 county
• 
  Paspalum dilatatum Poir. Introduced PADI3

  dallisgrass · Poaceae 2 counties
• 
  Paspalum dissectum (L.) L. Native PADI5

  mudbank crowngrass · Poaceae 4 counties
• 
  Paspalum distichum L. Native PADI6

  knotgrass · Poaceae 1 county
• 
  Paspalum floridanum Michx. Native PAFL4

  Florida paspalum · Poaceae 7 counties
• 
  Paspalum fluitans (Elliott) Kunth Native PAFL5

  horsetail paspalum · Poaceae 27 counties
• 
  Paspalum laeve Michx. Native PALA10

  field paspalum · Poaceae 45 counties
• 
  Paspalum praecox Walter Native PAPR4

  early paspalum · Poaceae 2 counties
• 
  Paspalum pubiflorum Rupr. ex Fourn. Native PAPU5

  hairyseed paspalum · Poaceae 28 counties
• 
  Paspalum setaceum Michx. Native PASE5

  thin paspalum · Poaceae 75 counties
• 
  Passiflora incarnata L. Native PAIN6

  purple passionflower · Passifloraceae 23 counties
• 
  Passiflora lutea L. Native PALU2

  yellow passionflower · Passifloraceae 44 counties
• 
  Pastinaca sativa L. Introduced PASA2

  wild parsnip · Apiaceae 102 counties
• 
  Patis racemosa (Sm.) Romasch., P.M. Peterson & R. J. Soreng Native PARA2

  blackseed ricegrass · Poaceae 12 counties
• 
  Paulownia tomentosa (Thunb.) Siebold & Zucc. ex Steud. Introduced PATO2

  princesstree · Scrophulariaceae 8 counties