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 3,801–3,850 of 4,111.

• 
  Symphoricarpos occidentalis Hook. Native SYOC

  western snowberry · Caprifoliaceae 20 counties
• 
  Symphoricarpos oreophilus A. Gray Native SYOR2

  mountain snowberry · Caprifoliaceae 2 counties
• 
  Symphoricarpos oreophilus A. Gray var. oreophilus Native SYORO

  mountain snowberry · Caprifoliaceae 2 counties
• 
  Symphoricarpos rotundifolius A. Gray Native SYRO

  roundleaf snowberry · Caprifoliaceae 33 counties
• 
  Symphoricarpos rotundifolius A. Gray var. rotundifolius Native SYROR

  roundleaf snowberry · Caprifoliaceae 33 counties
• 
  Symphyotrichum ascendens (Lindl.) G.L. Nesom Native SYAS3

  western aster · Asteraceae 28 counties
• 
  Symphyotrichum boreale (Torr. & A. Gray) Á. Löve & D. Löve Native SYBO2

  northern bog aster · Asteraceae 5 counties
• 
  Symphyotrichum campestre (Nutt.) G.L. Nesom Native SYCA3

  western meadow aster · Asteraceae 3 counties
• 
  Symphyotrichum campestre (Nutt.) G.L. Nesom var. campestre Native SYCAC

  western meadow aster · Asteraceae 3 counties
• 
  Symphyotrichum ciliatum (Ledeb.) G.L. Nesom Native SYCI2

  rayless alkali aster · Asteraceae 9 counties
• 
  Symphyotrichum eatonii (A. Gray) G.L. Nesom Native SYEA2

  Eaton's aster · Asteraceae 6 counties
• 
  Symphyotrichum ericoides (L.) G.L. Nesom Native SYER

  white heath aster · Asteraceae 17 counties
• 
  Symphyotrichum ericoides (L.) G.L. Nesom var. ericoides Native SYERE

  white heath aster · Asteraceae 15 counties
• 
  Symphyotrichum ericoides (L.) G.L. Nesom var. pansum (S.F. Blake) G.L. Nesom Native SYERP2

  manyflowered aster · Asteraceae 1 county
• 
  Symphyotrichum falcatum (Lindl.) G.L. Nesom Native SYFA

  white prairie aster · Asteraceae 34 counties
• 
  Symphyotrichum falcatum (Lindl.) G.L. Nesom var. commutatum (Torr. & A. Gray) G.L. Nesom Native SYFAC

  white prairie aster · Asteraceae 5 counties
• 
  Symphyotrichum falcatum (Lindl.) G.L. Nesom var. falcatum Native SYFAF

  white prairie aster · Asteraceae 32 counties
• 
  Symphyotrichum fendleri (A. Gray) G.L. Nesom Native SYFE

  Fendler's aster · Asteraceae 5 counties
• 
  Symphyotrichum foliaceum (Lindl. ex DC.) G.L. Nesom Native SYFO2

  alpine leafybract aster · Asteraceae 23 counties
• 
  Symphyotrichum foliaceum (Lindl. ex DC.) G.L. Nesom var. canbyi (A. Gray) G.L. Nesom Native SYFOC

  Canby's aster · Asteraceae 1 county
• 
  Symphyotrichum frondosum (Nutt.) G.L. Nesom Native SYFR2

  short-rayed alkali aster · Asteraceae 4 counties
• 
  Symphyotrichum laeve (L.) Á. Löve & D. Löve Native SYLA3

  smooth blue aster · Asteraceae 18 counties
• 
  Symphyotrichum laeve (L.) Á. Löve & D. Löve var. geyeri (A. Gray) G.L. Nesom Native SYLAG

  Geyer's aster · Asteraceae 18 counties
• 
  Symphyotrichum lanceolatum (Willd.) G.L. Nesom Native SYLA6

  white panicle aster · Asteraceae 18 counties
• 
  Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. hesperium (A. Gray) G.L. Nesom Native SYLAH

  white panicle aster · Asteraceae 17 counties
• 
  Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. hesperium (A. Gray) G.L. Nesom var. hesperium Native SYLAH6

  white panicle aster · Asteraceae 16 counties
• 
  Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. lanceolatum Native SYLAL6

  white panicle aster · Asteraceae 1 county
• 
  Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. lanceolatum var. lanceolatum Native SYLAL4

  white panicle aster · Asteraceae 1 county
• 
  Symphyotrichum novae-angliae (L.) G.L. Nesom Native SYNO2

  New England aster · Asteraceae 6 counties
• 
  Symphyotrichum oblongifolium (Nutt.) G.L. Nesom Native SYOB

  aromatic aster · Asteraceae 2 counties
• 
  Symphyotrichum porteri (A. Gray) G.L. Nesom Native SYPO4

  smooth white aster · Asteraceae 8 counties
• 
  Symphyotrichum spathulatum (Lindl.) G.L. Nesom Native SYSP

  western mountain aster · Asteraceae 14 counties
• 
  Symphyotrichum spathulatum (Lindl.) G.L. Nesom var. spathulatum Native SYSPS

  western mountain aster · Asteraceae 14 counties
• ⚘
  Symphyotrichum ×amethystinum (Nutt.) G.L. Nesom [ericoides × novae-angliae] Native SYAM3

  aster · Asteraceae 1 county
• 
  Symphytum officinale L. Introduced SYOF

  common comfrey · Boraginaceae 2 counties
• 
  Syringa vulgaris L. Introduced SYVU

  common lilac · Oleaceae 1 county
• 
  Tamarix chinensis Lour. Introduced TACH2

  five-stamen tamarisk · Tamaricaceae 1 county
• 
  Tamarix parviflora DC. Introduced TAPA4

  smallflower tamarisk · Tamaricaceae 2 counties
• 
  Tamarix ramosissima Ledeb. Introduced TARA

  saltcedar · Tamaricaceae 23 counties
• 
  Tanacetum balsamita L. Introduced TABA

  costmary · Asteraceae 1 county
• 
  Tanacetum coccineum (Willd.) Grierson Introduced TACO6

  pyrethum daisy · Asteraceae 1 county
• 
  Tanacetum parthenium (L.) Sch. Bip. Introduced TAPA6

  feverfew · Asteraceae 1 county
• 
  Tanacetum vulgare L. Introduced TAVU

  common tansy · Asteraceae 4 counties
• 
  Taraxacum eriophorum Rydb. Native TAER2

  woolbearing dandelion · Asteraceae 3 counties
• 
  Taraxacum laevigatum (Willd.) DC. Introduced TALA2

  rock dandelion · Asteraceae 1 county
• 
  Taraxacum lyratum (Ledeb.) DC. Native TALY

  harp dandelion · Asteraceae 13 counties
• 
  Taraxacum officinale F.H. Wigg. Both TAOF

  common dandelion · Asteraceae 39 counties
• 
  Taraxacum officinale F.H. Wigg. ssp. ceratophorum (Ledeb.) Schinz ex Thell. Native TAOFC

  common dandelion · Asteraceae 15 counties
• 
  Taraxacum officinale F.H. Wigg. ssp. officinale Introduced TAOFO

  common dandelion · Asteraceae 1 county
• 
  Telesonix jamesii (Torr.) Raf. Native TEJA

  James' telesonix · Saxifragaceae 4 counties