Colorado

• Adams 08001
  205 taxa Open ↗
• Alamosa 08003
  652 taxa Open ↗
• Arapahoe 08005
  254 taxa Open ↗
• Archuleta 08007
  651 taxa Open ↗
• Baca 08009
  785 taxa Open ↗
• Bent 08011
  267 taxa Open ↗
• Boulder 08013
  1,961 taxa Open ↗
• Broomfield 08014
  0 taxa Open ↗
• Chaffee 08015
  607 taxa Open ↗
• Cheyenne 08017
  694 taxa Open ↗

Showing 3,201–3,250 of 3,643 (native).

• 
  Senecio spartioides Torr. & A. Gray Native SESP3

  broom-like ragwort · Asteraceae 31 counties
• 
  Senecio spartioides Torr. & A. Gray var. multicapitatus (Greenm. ex Rydb.) S.L. Welsh Native SESPM

  broom-like ragwort · Asteraceae 11 counties
• 
  Senecio spartioides Torr. & A. Gray var. spartioides Native SESPS2

  broom-like ragwort · Asteraceae 1 county
• 
  Senecio taraxacoides (A. Gray) Greene Native SETA

  dandelion ragwort · Asteraceae 14 counties
• 
  Senecio triangularis Hook. Native SETR

  arrowleaf ragwort · Asteraceae 25 counties
• 
  Senecio wootonii Greene Native SEWO

  Wooton's ragwort · Asteraceae 22 counties
• 
  Sesuvium verrucosum Raf. Native SEVE2

  verrucose seapurslane · Aizoaceae 4 counties
• 
  Setaria leucopila (Scribn. & Merr.) K. Schum. Native SELE6

  streambed bristlegrass · Poaceae 3 counties
• 
  Shepherdia argentea (Pursh) Nutt. Native SHAR

  silver buffaloberry · Elaeagnaceae 15 counties
• 
  Shepherdia canadensis (L.) Nutt. Native SHCA

  russet buffaloberry · Elaeagnaceae 24 counties
• 
  Shinnersoseris rostrata (A. Gray) S. Tomb Native SHRO2

  beaked skeletonweed · Asteraceae 12 counties
• 
  Sibbaldia procumbens L. Native SIPR

  creeping sibbaldia · Rosaceae 27 counties
• 
  Sidalcea candida A. Gray Native SICA3

  white checkerbloom · Malvaceae 20 counties
• 
  Sidalcea neomexicana A. Gray Native SINE3

  salt spring checkerbloom · Malvaceae 23 counties
• 
  Sidalcea neomexicana A. Gray ssp. neomexicana Native SINEN

  salt spring checkerbloom · Malvaceae 22 counties
• 
  Silene acaulis (L.) Jacq. Native SIAC

  moss campion · Caryophyllaceae 26 counties
• 
  Silene acaulis (L.) Jacq. var. subacaulescens (F.N. Williams) Fernald & H. St. John Native SIACS2

  moss campion · Caryophyllaceae 26 counties
• 
  Silene antirrhina L. Native SIAN2

  sleepy silene · Caryophyllaceae 13 counties
• 
  Silene drummondii Hook. Native SIDR

  Drummond's campion · Caryophyllaceae 27 counties
• 
  Silene drummondii Hook. var. drummondii Native SIDRD

  Drummond's campion · Caryophyllaceae 27 counties
• 
  Silene kingii (S. Watson) Bocquet Native SIKI

  King's campion · Caryophyllaceae 2 counties
• 
  Silene laciniata Cav. Native SILA2

  cardinal catchfly · Caryophyllaceae 1 county
• 
  Silene laciniata Cav. ssp. greggii (A. Gray) C.L. Hitchc. & Maguire Native SILAG2

  cardinal catchfly · Caryophyllaceae 1 county
• 
  Silene menziesii Hook. Native SIME

  Menzies' campion · Caryophyllaceae 21 counties
• 
  Silene menziesii Hook. ssp. menziesii Native SIMEM

  Menzies' campion · Caryophyllaceae 21 counties
• 
  Silene menziesii Hook. ssp. menziesii var. menziesii Native SIMEM2

  Menzies' campion · Caryophyllaceae 21 counties
• 
  Silene scouleri Hook. Native SISC7

  simple campion · Caryophyllaceae 18 counties
• 
  Silene scouleri Hook. ssp. hallii (S. Watson) C.L. Hitchc. & Maguire Native SISCH

  simple campion · Caryophyllaceae 17 counties
• 
  Silene uralensis (Rupr.) Bocquet Native SIUR

  apetalous catchfly · Caryophyllaceae 2 counties
• 
  Silene uralensis (Rupr.) Bocquet ssp. montana (S. Watson) McNeill Native SIURM

  apetalous catchfly · Caryophyllaceae 2 counties
• 
  Silphium laciniatum L. Native SILA3

  compassplant · Asteraceae 1 county
• 
  Silphium laciniatum L. var. laciniatum Native SILAL2

  compassplant · Asteraceae 1 county
• 
  Sisyrinchium demissum Greene Native SIDE4

  stiff blue-eyed grass · Iridaceae 6 counties
• 
  Sisyrinchium idahoense E.P. Bicknell Native SIID

  Idaho blue-eyed grass · Iridaceae 7 counties
• 
  Sisyrinchium idahoense E.P. Bicknell var. occidentale (E.P. Bicknell) Douglass M. Hend. Native SIIDO

  Idaho blue-eyed grass · Iridaceae 7 counties
• 
  Sisyrinchium montanum Greene Native SIMO2

  strict blue-eyed grass · Iridaceae 29 counties
• 
  Sisyrinchium montanum Greene var. montanum Native SIMOM

  strict blue-eyed grass · Iridaceae 29 counties
• 
  Sisyrinchium pallidum Cholewa & Douglass M. Hend. Native SIPA11

  pale blue-eyed grass · Iridaceae 3 counties
• 
  Sium suave Walter Native SISU2

  hemlock waterparsnip · Apiaceae 9 counties
• 
  Smelowskia calycina (Stephan ex Willd.) C.A. Mey. Native SMCA

  alpine smelowskia · Brassicaceae 17 counties
• 
  Smelowskia calycina (Stephan ex Willd.) C.A. Mey. var. americana (Regel & Herder) Drury & Rollins Native SMCAA

  American false candytuft · Brassicaceae 17 counties
• 
  Smilax lasioneura Hook. Native SMLA3

  Blue Ridge carrionflower · Smilacaceae 6 counties
• 
  Solanum americanum Mill. Native SOAM

  American black nightshade · Solanaceae 1 county
• 
  Solanum carolinense L. Native SOCA3

  Carolina horsenettle · Solanaceae 2 counties
• 
  Solanum carolinense L. var. carolinense Native SOCAC4

  Carolina horsenettle · Solanaceae 2 counties
• 
  Solanum elaeagnifolium Cav. Native SOEL

  silverleaf nightshade · Solanaceae 9 counties
• 
  Solanum heterodoxum Dunal Native SOHE

  melonleaf nightshade · Solanaceae 1 county
• 
  Solanum heterodoxum Dunal var. setigeroides M.D. Whalen Native SOHES

  melonleaf nightshade · Solanaceae 1 county
• 
  Solanum jamesii Torr. Native SOJA

  wild potato · Solanaceae 4 counties
• 
  Solanum ptycanthum Dunal Native SOPT7

  West Indian nightshade · Solanaceae 10 counties