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 1,401–1,450 of 4,111.

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  Echinocereus coccineus Engelm. Native ECCO5

  scarlet hedgehog cactus · Cactaceae 1 county
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  Echinocereus coccineus Engelm. var. coccineus Native ECCOC

  scarlet hedgehog cactus · Cactaceae 1 county
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  Echinocereus fendleri (Engelm.) Sencke ex J.N. Haage Native ECFE

  pinkflower hedgehog cactus · Cactaceae 3 counties
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  Echinocereus fendleri (Engelm.) Sencke ex J.N. Haage ssp. fendleri Native ECFEF3

  pinkflower hedgehog cactus · Cactaceae 3 counties
• 
  Echinocereus reichenbachii (Terscheck ex Walp.) hort ex Haage Native ECRE

  lace hedgehog cactus · Cactaceae 4 counties
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  Echinocereus reichenbachii (Terscheck ex Walp.) hort ex Haage ssp. perbellus (Britton & Rose) N.P. Taylor Native ECREP2

  lace hedgehog cactus · Cactaceae 4 counties
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  Echinocereus triglochidiatus Engelm. Native ECTR

  kingcup cactus · Cactaceae 21 counties
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  Echinocereus triglochidiatus Engelm. var. triglochidiatus Native ECTRT

  kingcup cactus · Cactaceae 21 counties
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  Echinocereus viridiflorus Engelm. Native ECVI2

  nylon hedgehog cactus · Cactaceae 23 counties
• 
  Echinocereus viridiflorus Engelm. var. viridiflorus Native ECVIV

  nylon hedgehog cactus · Cactaceae 22 counties
• 
  Echinochloa crus-galli (L.) P. Beauv. Introduced ECCR

  barnyardgrass · Poaceae 21 counties
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  Echinochloa muricata (P. Beauv.) Fernald Native ECMU2

  rough barnyardgrass · Poaceae 12 counties
• 
  Echinochloa muricata (P. Beauv.) Fernald var. microstachya Wiegand Native ECMUM

  rough barnyardgrass · Poaceae 12 counties
• 
  Echinocystis lobata (Michx.) Torr. & A. Gray Native ECLO

  wild cucumber · Cucurbitaceae 12 counties
• 
  Echinops sphaerocephalus L. Introduced ECSP

  great globethistle · Asteraceae 2 counties
• 
  Echium vulgare L. Introduced ECVU

  common viper's bugloss · Boraginaceae 1 county
• 
  Eichhornia crassipes (Mart.) Solms Introduced EICR

  common water hyacinth · Pontederiaceae 1 county
• 
  Elaeagnus angustifolia L. Introduced ELAN

  Russian olive · Elaeagnaceae 16 counties
• 
  Elaeagnus commutata Bernh. ex Rydb. Native ELCO

  silverberry · Elaeagnaceae 3 counties
• 
  Elatine brachysperma A. Gray Native ELBR5

  shortseed waterwort · Elatinaceae 4 counties
• 
  Elatine rubella Rydb. Native ELRU

  southwestern waterwort · Elatinaceae 2 counties
• 
  Eleocharis acicularis (L.) Roem. & Schult. Native ELAC

  needle spikerush · Cyperaceae 16 counties
• 
  Eleocharis atropurpurea (Retz.) J. Presl & C. Presl Native ELAT

  purple spikerush · Cyperaceae 1 county
• 
  Eleocharis bella (Piper) Svens. Native ELBE

  beautiful spikerush · Cyperaceae 1 county
• 
  Eleocharis bolanderi A. Gray Native ELBO

  Bolander's spikerush · Cyperaceae 4 counties
• 
  Eleocharis compressa Sull. Native ELCO2

  flatstem spikerush · Cyperaceae 7 counties
• 
  Eleocharis compressa Sull. var. compressa Native ELCOC2

  flatstem spikerush · Cyperaceae 6 counties
• 
  Eleocharis erythropoda Steud. Native ELER

  bald spikerush · Cyperaceae 1 county
• 
  Eleocharis macrostachya Britton Native ELMA5

  pale spikerush · Cyperaceae 8 counties
• 
  Eleocharis montevidensis Kunth Native ELMO2

  sand spikerush · Cyperaceae 1 county
• 
  Eleocharis obtusa (Willd.) Schult. Native ELOB2

  blunt spikerush · Cyperaceae 2 counties
• 
  Eleocharis palustris (L.) Roem. & Schult. Native ELPA3

  common spikerush · Cyperaceae 41 counties
• 
  Eleocharis palustris (L.) Roem. & Schult. var. palustris Native ELPAP

  common spikerush · Cyperaceae 41 counties
• 
  Eleocharis parishii Britton Native ELPA4

  Parish's spikerush · Cyperaceae 1 county
• 
  Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer Native ELPA5

  dwarf spikerush · Cyperaceae 5 counties
• 
  Eleocharis quinqueflora (Hartmann) O. Schwarz Native ELQU2

  fewflower spikerush · Cyperaceae 15 counties
• 
  Eleocharis rostellata (Torr.) Torr. Native ELRO2

  beaked spikerush · Cyperaceae 5 counties
• 
  Eleocharis wolfii (A. Gray) A. Gray ex Britton Native ELWO

  Wolf's spikerush · Cyperaceae 1 county
• 
  Eleusine indica (L.) Gaertn. Introduced ELIN3

  Indian goosegrass · Poaceae 2 counties
• 
  Ellisia nyctelea (L.) L. Native ELNY

  Aunt Lucy · Hydrophyllaceae 17 counties
• 
  Elodea bifoliata H. St. John Native ELBI2

  twoleaf waterweed · Hydrocharitaceae 2 counties
• 
  Elodea canadensis Michx. Native ELCA7

  Canadian waterweed · Hydrocharitaceae 4 counties
• 
  Elodea nuttallii (Planch.) H. St. John Native ELNU2

  western waterweed · Hydrocharitaceae 3 counties
• 
  Elymus albicans (Scribn. & J.G. Sm.) Á. Löve Native ELAL7

  Montana wheatgrass · Poaceae 1 county
• 
  Elymus canadensis L. Native ELCA4

  Canada wildrye · Poaceae 32 counties
• 
  Elymus elymoides (Raf.) Swezey Native ELEL5

  squirreltail · Poaceae 57 counties
• 
  Elymus elymoides (Raf.) Swezey ssp. brevifolius (J.G. Sm.) Barkworth Native ELELB2

  squirreltail · Poaceae 56 counties
• 
  Elymus glaucus Buckley Native ELGL

  blue wildrye · Poaceae 23 counties
• 
  Elymus glaucus Buckley ssp. glaucus Native ELGLG

  blue wildrye · Poaceae 23 counties
• 
  Elymus lanceolatus (Scribn. & J.G. Sm.) Gould Native ELLA3

  thickspike wheatgrass · Poaceae 25 counties