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 501–550 of 3,775.

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  Callirhoe involucrata (Torr. & A. Gray) A. Gray var. involucrata Native CAINI4

  purple poppymallow · Malvaceae 9 counties
• 
  Callirhoe triangulata (Leavenworth) A. Gray Native CATR

  clustered poppymallow · Malvaceae 27 counties
• 
  Callitriche heterophylla Pursh Native CAHE3

  twoheaded water-starwort · Callitrichaceae 37 counties
• 
  Callitriche heterophylla Pursh ssp. heterophylla Native CAHEH

  twoheaded water-starwort · Callitrichaceae 37 counties
• 
  Callitriche palustris L. Native CAPA52

  vernal water-starwort · Callitrichaceae 13 counties
• 
  Callitriche terrestris Raf. Native CATE19

  terrestrial water-starwort · Callitrichaceae 50 counties
• 
  Calopogon oklahomensis D.H. Goldman Native CAOK2

  Oklahoma grasspink · Orchidaceae 1 county
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  Calopogon tuberosus (L.) Britton, Sterns & Poggenb. Native CATU5

  tuberous grasspink · Orchidaceae 21 counties
• 
  Calopogon tuberosus (L.) Britton, Sterns & Poggenb. var. tuberosus Native CATUT

  tuberous grasspink · Orchidaceae 21 counties
• 
  Caltha palustris L. Native CAPA5

  yellow marsh marigold · Ranunculaceae 41 counties
• 
  Caltha palustris L. var. palustris Native CAPAP6

  yellow marsh marigold · Ranunculaceae 41 counties
• 
  Calycanthus floridus L. Native CAFL22

  eastern sweetshrub · Calycanthaceae 1 county
• 
  Calycanthus floridus L. var. glaucus (Willd.) Torr. & A. Gray Native CAFLG

  eastern sweetshrub · Calycanthaceae 1 county
• 
  Calycocarpum lyonii (Pursh) A. Gray Native CALY2

  cupseed · Menispermaceae 12 counties
• 
  Calylophus serrulatus (Nutt.) P.H. Raven Native CASE12

  yellow sundrops · Onagraceae 4 counties
• 
  Calystegia hederacea Wall. Introduced CAHE21

  Japanese false bindweed · Convolvulaceae 5 counties
• 
  Calystegia sepium (L.) R. Br. Both CASE13

  hedge false bindweed · Convolvulaceae 90 counties
• 
  Calystegia sepium (L.) R. Br. ssp. americana (Sims) Brummitt Native CASEA2

  hedge false bindweed · Convolvulaceae 90 counties
• 
  Calystegia sepium (L.) R. Br. ssp. angulata Brummitt Native CASEA3

  hedge false bindweed · Convolvulaceae 3 counties
• 
  Calystegia sepium (L.) R. Br. ssp. erratica Brummitt Native CASEE

  hedge false bindweed · Convolvulaceae 1 county
• 
  Calystegia silvatica (Kit.) Griseb. Both CASI10

  shortstalk false bindweed · Convolvulaceae 18 counties
• 
  Calystegia silvatica (Kit.) Griseb. ssp. fraterniflora (Mack. & Bush) Brummitt Native CASIF

  shortstalk false bindweed · Convolvulaceae 18 counties
• 
  Calystegia spithamaea (L.) Pursh Native CASP14

  low false bindweed · Convolvulaceae 35 counties
• 
  Calystegia spithamaea (L.) Pursh ssp. spithamaea Native CASPS2

  low false bindweed · Convolvulaceae 35 counties
• 
  Camassia angusta (Engelm. & A. Gray) Blank. Native CAAN2

  prairie camas · Liliaceae 2 counties
• 
  Camassia scilloides (Raf.) Cory Native CASC5

  Atlantic camas · Liliaceae 72 counties
• 
  Camelina microcarpa Andrz. ex DC. Introduced CAMI2

  littlepod false flax · Brassicaceae 42 counties
• 
  Camelina sativa (L.) Crantz Introduced CASA2

  false flax · Brassicaceae 12 counties
• 
  Camelina sativa (L.) Crantz ssp. sativa Introduced CASAS2

  gold-of-pleasure · Brassicaceae 12 counties
• 
  Campanula aparinoides Pursh Native CAAP2

  marsh bellflower · Campanulaceae 27 counties
• 
  Campanula glomerata L. Introduced CAGL2

  Dane's blood · Campanulaceae 2 counties
• 
  Campanula rapunculoides L. Introduced CARA

  rampion bellflower · Campanulaceae 22 counties
• 
  Campanula rotundifolia L. Native CARO2

  bluebell bellflower · Campanulaceae 19 counties
• 
  Campanulastrum americanum (L.) Small Native CAAM18

  American bellflower · Campanulaceae 96 counties
• 
  Campsis radicans (L.) Seem. ex Bureau Native CARA2

  trumpet creeper · Bignoniaceae 84 counties
• 
  Canavalia ensiformis (L.) DC. Introduced CAEN4

  jack bean · Fabaceae 1 county
• 
  Cannabis sativa L. Introduced CASA3

  marijuana · Cannabaceae 59 counties
• 
  Cannabis sativa L. ssp. sativa Introduced CASAS3

  marijuana · Cannabaceae 59 counties
• 
  Cannabis sativa L. ssp. sativa var. sativa Introduced CASAS9

  marijuana · Cannabaceae 1 county
• 
  Capsella bursa-pastoris (L.) Medik. Introduced CABU2

  shepherd's purse · Brassicaceae 102 counties
• 
  Caragana arborescens Lam. Introduced CAAR18

  Siberian peashrub · Fabaceae 4 counties
• 
  Cardamine bulbosa (Schreb. ex Muhl.) Britton, Sterns & Poggenb. Native CABU3

  bulbous bittercress · Brassicaceae 81 counties
• 
  Cardamine concatenata (Michx.) Sw. Native CACO26

  cutleaf toothwort · Brassicaceae 100 counties
• 
  Cardamine douglassii Britton Native CADO

  limestone bittercress · Brassicaceae 25 counties
• 
  Cardamine hirsuta L. Introduced CAHI3

  hairy bittercress · Brassicaceae 26 counties
• 
  Cardamine parviflora L. Native CAPA12

  sand bittercress · Brassicaceae 62 counties
• 
  Cardamine parviflora L. var. arenicola (Britton) O.E. Schulz Native CAPAA2

  sand bittercress · Brassicaceae 62 counties
• 
  Cardamine pensylvanica Muhl. ex Willd. Native CAPE3

  Pennsylvania bittercress · Brassicaceae 78 counties
• 
  Cardamine pratensis L. Native CAPR3

  cuckoo flower · Brassicaceae 2 counties
• 
  Cardamine pratensis L. var. pratensis Native CAPRP

  cuckoo flower · Brassicaceae 2 counties