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 801–850 of 3,643 (native).

• 
  Castilleja occidentalis Torr. Native CAOC4

  western Indian paintbrush · Scrophulariaceae 25 counties
• 
  Castilleja puberula Rydb. Native CAPU19

  shortflower Indian paintbrush · Scrophulariaceae 4 counties
• 
  Castilleja rhexiifolia Rydb. Native CARH4

  splitleaf Indian paintbrush · Scrophulariaceae 27 counties
• 
  Castilleja scabrida Eastw. Native CASC19

  rough Indian paintbrush · Scrophulariaceae 5 counties
• 
  Castilleja scabrida Eastw. var. scabrida Native CASCS4

  Zion Indian paintbrush · Scrophulariaceae 5 counties
• 
  Castilleja sessiliflora Pursh Native CASE5

  downy paintedcup · Scrophulariaceae 16 counties
• 
  Castilleja sulphurea Rydb. Native CASU12

  sulphur Indian paintbrush · Scrophulariaceae 31 counties
• 
  Catabrosa aquatica (L.) P. Beauv. Native CAAQ3

  water whorlgrass · Poaceae 11 counties
• 
  Catabrosa aquatica (L.) P. Beauv. var. aquatica Native CAAQA6

  water whorlgrass · Poaceae 11 counties
• 
  Catalpa speciosa (Warder) Warder ex Engelm. Native CASP8

  northern catalpa · Bignoniaceae 1 county
• 
  Caulanthus crassicaulis (Torr.) S. Watson Native CACR11

  thickstem wild cabbage · Brassicaceae 2 counties
• 
  Caulanthus crassicaulis (Torr.) S. Watson var. crassicaulis Native CACRC

  thickstem wild cabbage · Brassicaceae 2 counties
• 
  Ceanothus fendleri A. Gray Native CEFE

  Fendler's ceanothus · Rhamnaceae 22 counties
• 
  Ceanothus herbaceus Raf. Native CEHE

  Jersey tea · Rhamnaceae 6 counties
• 
  Ceanothus martinii M.E. Jones Native CEMA2

  Martin's ceanothus · Rhamnaceae 2 counties
• 
  Ceanothus velutinus Douglas ex Hook. Native CEVE

  snowbrush ceanothus · Rhamnaceae 13 counties
• 
  Ceanothus velutinus Douglas ex Hook. var. velutinus Native CEVEV4

  snowbrush ceanothus · Rhamnaceae 13 counties
• 
  Celtis laevigata Willd. Native CELA

  sugarberry · Ulmaceae 13 counties
• 
  Celtis laevigata Willd. var. reticulata (Torr.) L.D. Benson Native CELAR

  netleaf hackberry · Ulmaceae 13 counties
• 
  Celtis occidentalis L. Native CEOC

  common hackberry · Ulmaceae 7 counties
• 
  Cenchrus longispinus (Hack.) Fernald Native CELO3

  mat sandbur · Poaceae 18 counties
• 
  Cenchrus spinifex Cav. Native CESP4

  coastal sandbur · Poaceae 1 county
• 
  Centaurium arizonicum (A. Gray) A. Heller Native CEAR12

  Arizona centaury · Gentianaceae 1 county
• 
  Centaurium exaltatum (Griseb.) W. Wight ex Piper Native CEEX

  desert centaury · Gentianaceae 3 counties
• 
  Cerastium arvense L. ssp. strictum (L.) Ugborogho Native CEARS2

  field chickweed · Caryophyllaceae 35 counties
• 
  Cerastium beeringianum Cham. & Schltdl. Native CEBE2

  Bering chickweed · Caryophyllaceae 18 counties
• 
  Cerastium beeringianum Cham. & Schltdl. ssp. earlei (Rydb.) Hultén Native CEBEE

  Bering chickweed · Caryophyllaceae 18 counties
• 
  Cerastium brachypodum (Engelm. ex A. Gray) B.L. Rob. Native CEBR3

  shortstalk chickweed · Caryophyllaceae 7 counties
• 
  Cerastium nutans Raf. Native CENU2

  nodding chickweed · Caryophyllaceae 1 county
• 
  Ceratophyllum demersum L. Native CEDE4

  coon's tail · Ceratophyllaceae 7 counties
• 
  Cercocarpus intricatus S. Watson Native CEIN7

  littleleaf mountain mahogany · Rosaceae 6 counties
• 
  Cercocarpus ledifolius Nutt. Native CELE3

  curl-leaf mountain mahogany · Rosaceae 2 counties
• 
  Cercocarpus montanus Raf. Native CEMO2

  alderleaf mountain mahogany · Rosaceae 34 counties
• 
  Cercocarpus montanus Raf. var. montanus Native CEMOM4

  alderleaf mountain mahogany · Rosaceae 3 counties
• 
  Chaenactis douglasii (Hook.) Hook. & Arn. Native CHDO

  Douglas' dustymaiden · Asteraceae 32 counties
• 
  Chaenactis douglasii (Hook.) Hook. & Arn. var. alpina A. Gray Native CHDOA2

  alpine dustymaiden · Asteraceae 10 counties
• 
  Chaenactis douglasii (Hook.) Hook. & Arn. var. douglasii Native CHDOD

  Douglas' dustymaiden · Asteraceae 1 county
• 
  Chaenactis stevioides Hook. & Arn. Native CHST

  Esteve's pincushion · Asteraceae 7 counties
• 
  Chaetopappa ericoides (Torr.) G.L. Nesom Native CHER2

  rose heath · Asteraceae 31 counties
• 
  Chamaechaenactis scaposa (Eastw.) Rydb. Native CHSC

  fullstem · Asteraceae 8 counties
• 
  Chamaechaenactis scaposa (Eastw.) Rydb. var. scaposa Native CHSCS

  fullstem · Asteraceae 8 counties
• 
  Chamaerhodos erecta (L.) Bunge Native CHER

  little rose · Rosaceae 7 counties
• 
  Chamaerhodos erecta (L.) Bunge ssp. nuttallii (Pickering ex Rydb.) Hultén Native CHERN

  Nuttall's little rose · Rosaceae 7 counties
• 
  Chamaesaracha coniodes (Moric. ex Dunal) Britton Native CHCO

  gray five eyes · Solanaceae 7 counties
• 
  Chamaesaracha coronopus (Dunal) A. Gray Native CHCO2

  greenleaf five eyes · Solanaceae 12 counties
• 
  Chamaesyce albomarginata (Torr. & A. Gray) Small Native CHAL11

  whitemargin sandmat · Euphorbiaceae 1 county
• 
  Chamaesyce chaetocalyx (Boiss.) Wooton & Standl. Native CHCH5

  bristlecup sandmat · Euphorbiaceae 1 county
• 
  Chamaesyce chaetocalyx (Boiss.) Wooton & Standl. var. chaetocalyx Native CHCHC3

  bristlecup sandmat · Euphorbiaceae 1 county
• 
  Chamaesyce fendleri (Torr. & A. Gray) Small Native CHFE3

  Fendler's sandmat · Euphorbiaceae 21 counties
• 
  Chamaesyce geyeri (Engelm. & A. Gray) Small Native CHGE2

  Geyer's sandmat · Euphorbiaceae 9 counties