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 3,051–3,100 of 3,775.

• 
  Sagittaria rigida Pursh Native SARI

  sessilefruit arrowhead · Alismataceae 20 counties
• 
  Salicornia depressa Standl. Native SADE10

  Virginia glasswort · Chenopodiaceae 1 county
• 
  Salix alba L. Introduced SAAL2

  white willow · Salicaceae 37 counties
• 
  Salix amygdaloides Andersson Native SAAM2

  peachleaf willow · Salicaceae 58 counties
• 
  Salix bebbiana Sarg. Native SABE2

  Bebb willow · Salicaceae 11 counties
• 
  Salix candida Flueggé ex Willd. Native SACA4

  sageleaf willow · Salicaceae 13 counties
• 
  Salix caprea L. Introduced SACA22

  goat willow · Salicaceae 3 counties
• 
  Salix caroliniana Michx. Native SACA5

  coastal plain willow · Salicaceae 14 counties
• 
  Salix cordata Michx. Native SACO3

  heartleaf willow · Salicaceae 3 counties
• 
  Salix discolor Muhl. Native SADI

  pussy willow · Salicaceae 45 counties
• 
  Salix eriocephala Michx. Native SAER

  Missouri River willow · Salicaceae 54 counties
• ⚘
  Salix fragilis L. Introduced SAFR

  crack willow · Salicaceae 25 counties
• 
  Salix humilis Marshall Native SAHU2

  prairie willow · Salicaceae 83 counties
• 
  Salix humilis Marshall var. humilis Native SAHUH

  prairie willow · Salicaceae 80 counties
• 
  Salix humilis Marshall var. tristis (Aiton) Griggs Native SAHUT

  prairie willow · Salicaceae 7 counties
• 
  Salix interior Rowlee Native SAIN3

  sandbar willow · Salicaceae 98 counties
• 
  Salix lucida Muhl. Native SALU

  shining willow · Salicaceae 8 counties
• 
  Salix lucida Muhl. ssp. lucida Native SALUL2

  shining willow · Salicaceae 8 counties
• 
  Salix myricoides Muhl. Native SAMY2

  bayberry willow · Salicaceae 17 counties
• 
  Salix myricoides Muhl. var. myricoides Native SAMYM

  bayberry willow · Salicaceae 17 counties
• 
  Salix nigra Marshall Native SANI

  black willow · Salicaceae 102 counties
• 
  Salix pedicellaris Pursh Native SAPE2

  bog willow · Salicaceae 8 counties
• 
  Salix pentandra L. Introduced SAPE4

  laurel willow · Salicaceae 3 counties
• 
  Salix petiolaris Sm. Native SAPE5

  meadow willow · Salicaceae 12 counties
• 
  Salix purpurea L. Introduced SAPU2

  purpleosier willow · Salicaceae 3 counties
• 
  Salix sericea Marshall Native SASE

  silky willow · Salicaceae 26 counties
• 
  Salix serissima (L.H. Bailey) Fernald Native SASE2

  autumn willow · Salicaceae 2 counties
• ⚘
  Salix ×pendulina Wender. [babylonica × euxina] Introduced SAPE12

  Wisconsin weeping willow · Salicaceae 7 counties
• 
  Salsola collina Pall. Introduced SACO8

  slender Russian thistle · Chenopodiaceae 1 county
• 
  Salsola tragus L. Introduced SATR12

  prickly Russian thistle · Chenopodiaceae 38 counties
• 
  Salvia azurea Michx. ex Lam. Native SAAZ

  azure blue sage · Lamiaceae 13 counties
• 
  Salvia azurea Michx. ex Lam. var. grandiflora Benth. Native SAAZG

  pitcher sage · Lamiaceae 13 counties
• 
  Salvia lyrata L. Native SALY2

  lyreleaf sage · Lamiaceae 13 counties
• 
  Salvia pratensis L. Introduced SAPR2

  introduced sage · Lamiaceae 3 counties
• 
  Salvia reflexa Hornem. Native SARE3

  lanceleaf sage · Lamiaceae 21 counties
• 
  Salvia verticillata L. Introduced SAVE5

  lilac sage · Lamiaceae 1 county
• ⚘
  Salvia ×sylvestris L. (pro sp.) [nemorosa × pratensis] Introduced SASY

  woodland sage · Lamiaceae 3 counties
• 
  Sambucus nigra L. Both SANI4

  black elderberry · Caprifoliaceae 102 counties
• 
  Sambucus nigra L. ssp. canadensis (L.) R. Bolli Native SANIC4

  American black elderberry · Caprifoliaceae 102 counties
• 
  Sambucus racemosa L. Native SARA2

  red elderberry · Caprifoliaceae 7 counties
• 
  Sambucus racemosa L. var. racemosa Native SARAR3

  red elderberry · Caprifoliaceae 7 counties
• 
  Samolus valerandi L. Both SAVA3

  seaside brookweed · Primulaceae 55 counties
• 
  Samolus valerandi L. ssp. parviflorus (Raf.) Hultén Native SAVAP

  seaside brookweed · Primulaceae 55 counties
• 
  Sanguinaria canadensis L. Native SACA13

  bloodroot · Papaveraceae 95 counties
• 
  Sanguisorba canadensis L. Native SACA14

  Canadian burnet · Rosaceae 3 counties
• 
  Sanguisorba minor Scop. Introduced SAMI3

  small burnet · Rosaceae 2 counties
• 
  Sanguisorba minor Scop. ssp. balearica (Bourg. ex Nyman) M. Garm. & C. Navarro Introduced SAMIB2

  small burnet · Rosaceae 2 counties
• 
  Sanicula canadensis L. Native SACA15

  Canadian blacksnakeroot · Apiaceae 98 counties
• 
  Sanicula canadensis L. var. canadensis Native SACAC2

  Canadian blacksnakeroot · Apiaceae 2 counties
• 
  Sanicula marilandica L. Native SAMA2

  Maryland sanicle · Apiaceae 30 counties