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 3,101–3,150 of 3,775.

• 
  Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe Native SAOD

  clustered blacksnakeroot · Apiaceae 88 counties
• 
  Sanicula trifoliata E.P. Bicknell Native SATR4

  largefruit blacksnakeroot · Apiaceae 9 counties
• 
  Sanvitalia procumbens Lam. Introduced SAPR6

  Mexican creeping zinnia · Asteraceae 1 county
• 
  Saponaria officinalis L. Introduced SAOF4

  bouncingbet · Caryophyllaceae 95 counties
• 
  Sarracenia purpurea L. Native SAPU4

  purple pitcherplant · Sarraceniaceae 3 counties
• 
  Sarracenia purpurea L. ssp. purpurea var. purpurea Native SAPUP6

  northern purple pitcherplant · Sarraceniaceae 3 counties
• 
  Sassafras albidum (Nutt.) Nees Native SAAL5

  sassafras · Lauraceae 81 counties
• 
  Satureja hortensis L. Introduced SAHO3

  summer savory · Lamiaceae 2 counties
• 
  Saururus cernuus L. Native SACE

  lizard's tail · Saururaceae 58 counties
• 
  Saxifraga pensylvanica L. Native SAPE8

  eastern swamp saxifrage · Saxifragaceae 36 counties
• 
  Saxifraga virginiensis Michx. Native SAVI5

  early saxifrage · Saxifragaceae 2 counties
• 
  Saxifraga virginiensis Michx. var. virginiensis Native SAVIV

  early saxifrage · Saxifragaceae 2 counties
• 
  Schedonnardus paniculatus (Nutt.) Trel. Native SCPA

  tumblegrass · Poaceae 1 county
• 
  Schedonorus arundinaceus (Schreb.) Dumort., nom. cons. Introduced SCAR7

  tall fescue · Poaceae 9 counties
• 
  Schedonorus pratensis (Huds.) P. Beauv. Introduced SCPR4

  meadow fescue · Poaceae 102 counties
• 
  Scheuchzeria palustris L. Native SCPA2

  rannoch-rush · Scheuchzeriaceae 4 counties
• 
  Scheuchzeria palustris L. ssp. americana (Fernald) Hultén Native SCPAA3

  rannoch-rush · Scheuchzeriaceae 4 counties
• 
  Schizachne purpurascens (Torr.) Swallen Native SCPU

  false melic · Poaceae 1 county
• 
  Schizachyrium scoparium (Michx.) Nash Native SCSC

  little bluestem · Poaceae 92 counties
• 
  Schizachyrium scoparium (Michx.) Nash var. scoparium Native SCSCS

  little bluestem · Poaceae 92 counties
• 
  Schoenoplectiella hallii (A.Gray) Lye Native SCHA10

  Hall's bulrush · Cyperaceae 5 counties
• 
  Schoenoplectiella mucronata (L.) J. Jung & H.K. Choi Introduced SCMU15

  bog bulrush · Cyperaceae 1 county
• 
  Schoenoplectiella purshiana (Fernald) Lye Native SCPU14

  weakstalk bulrush · Cyperaceae 6 counties
• 
  Schoenoplectiella smithii (A. Gray) Hayas. Native SCSM3

  Smith's bulrush · Cyperaceae 8 counties
• 
  Schoenoplectus acutus (Muhl. ex Bigelow) Á. Löve & D. Löve Native SCAC3

  hardstem bulrush · Cyperaceae 32 counties
• 
  Schoenoplectus acutus (Muhl. ex Bigelow) Á. Löve & D. Löve var. acutus Native SCACA

  hardstem bulrush · Cyperaceae 32 counties
• 
  Schoenoplectus heterochaetus (Chase) Soják Native SCHE5

  slender bulrush · Cyperaceae 11 counties
• 
  Schoenoplectus pungens (Vahl) Palla Native SCPU10

  common threesquare · Cyperaceae 40 counties
• 
  Schoenoplectus pungens (Vahl) Palla var. pungens Native SCPUP5

  common threesquare · Cyperaceae 39 counties
• 
  Schoenoplectus subterminalis (Torr.) Soják Native SCSU10

  swaying bulrush · Cyperaceae 2 counties
• 
  Schoenoplectus tabernaemontani (C.C. Gmel.) Palla Native SCTA2

  softstem bulrush · Cyperaceae 71 counties
• 
  Schoenoplectus torreyi (Olney) Palla Native SCTO3

  Torrey's bulrush · Cyperaceae 5 counties
• 
  Scilla siberica Andrews Introduced SCSI2

  Siberian squill · Liliaceae 3 counties
• 
  Scirpus atrocinctus Fernald Native SCAT4

  blackgirdle bulrush · Cyperaceae 1 county
• 
  Scirpus atrovirens Willd. Native SCAT2

  green bulrush · Cyperaceae 102 counties
• 
  Scirpus cyperinus (L.) Kunth Native SCCY

  woolgrass · Cyperaceae 60 counties
• 
  Scirpus georgianus Harper Native SCGE2

  Georgia bulrush · Cyperaceae 29 counties
• 
  Scirpus hattorianus Makino Native SCHA3

  mosquito bulrush · Cyperaceae 2 counties
• 
  Scirpus microcarpus J. Presl & C. Presl Native SCMI2

  panicled bulrush · Cyperaceae 1 county
• 
  Scirpus pedicellatus Fernald Native SCPE3

  stalked bulrush · Cyperaceae 4 counties
• 
  Scirpus pendulus Muhl. Native SCPE4

  rufous bulrush · Cyperaceae 86 counties
• 
  Scirpus polyphyllus Vahl Native SCPO2

  leafy bulrush · Cyperaceae 5 counties
• 
  Scleranthus annuus L. Introduced SCAN2

  German knotgrass · Caryophyllaceae 3 counties
• 
  Scleria pauciflora Muhl. ex Willd. Native SCPA5

  fewflower nutrush · Cyperaceae 9 counties
• 
  Scleria pauciflora Muhl. ex Willd. var. caroliniana (Willd.) Alph. Wood Native SCPAC

  Carolina nutrush · Cyperaceae 3 counties
• 
  Scleria pauciflora Muhl. ex Willd. var. pauciflora Native SCPAP2

  fewflower nutrush · Cyperaceae 8 counties
• 
  Scleria reticularis Michx. Native SCRE

  netted nutrush · Cyperaceae 2 counties
• 
  Scleria triglomerata Michx. Native SCTR

  whip nutrush · Cyperaceae 21 counties
• 
  Scleria verticillata Muhl. ex Willd. Native SCVE2

  low nutrush · Cyperaceae 10 counties
• 
  Sclerochloa dura (L.) P. Beauv. Introduced SCDU2

  common hardgrass · Poaceae 18 counties