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 1,901–1,950 of 4,111.

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  Halimolobos virgata (Nutt.) O.E. Schulz Native HAVI3

  rod halimolobos · Brassicaceae 1 county
• 
  Halogeton glomeratus (M. Bieb.) C.A. Mey. Introduced HAGL

  saltlover · Chenopodiaceae 8 counties
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  Harbouria trachypleura (A. Gray) J.M. Coult. & Rose Native HATR

  whiskbroom parsley · Apiaceae 7 counties
• 
  Hedeoma drummondii Benth. Native HEDR

  Drummond's false pennyroyal · Lamiaceae 15 counties
• 
  Hedeoma hispida Pursh Native HEHI

  rough false pennyroyal · Lamiaceae 11 counties
• 
  Hedysarum boreale Nutt. Native HEBO

  Utah sweetvetch · Fabaceae 19 counties
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  Hedysarum boreale Nutt. ssp. boreale Native HEBOB

  Utah sweetvetch · Fabaceae 19 counties
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  Hedysarum boreale Nutt. ssp. boreale var. boreale Native HEBOB2

  Utah sweetvetch · Fabaceae 19 counties
• 
  Hedysarum occidentale Greene Native HEOC

  western sweetvetch · Fabaceae 11 counties
• 
  Helenium autumnale L. Native HEAU

  common sneezeweed · Asteraceae 5 counties
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  Helenium autumnale L. var. montanum (Nutt.) Fernald Native HEAUM

  mountain sneezeweed · Asteraceae 5 counties
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  Helenium microcephalum DC. Native HEMI

  smallhead sneezeweed · Asteraceae 1 county
• 
  Helenium microcephalum DC. var. microcephalum Native HEMIM

  smallhead sneezeweed · Asteraceae 1 county
• 
  Helianthella microcephala (A. Gray) A. Gray Native HEMI2

  purpledisk helianthella · Asteraceae 3 counties
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  Helianthella parryi A. Gray Native HEPA

  Parry's dwarf-sunflower · Asteraceae 9 counties
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  Helianthella quinquenervis (Hook.) A. Gray Native HEQU2

  fivenerve helianthella · Asteraceae 24 counties
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  Helianthella uniflora (Nutt.) Torr. & A. Gray Native HEUN

  oneflower helianthella · Asteraceae 6 counties
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  Helianthella uniflora (Nutt.) Torr. & A. Gray var. uniflora Native HEUNU

  oneflower helianthella · Asteraceae 6 counties
• 
  Helianthemum bicknellii Fernald Native HEBI2

  hoary frostweed · Cistaceae 4 counties
• 
  Helianthus annuus L. Native HEAN3

  common sunflower · Asteraceae 31 counties
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  Helianthus ciliaris DC. Native HECI

  Texas blueweed · Asteraceae 3 counties
• 
  Helianthus maximiliani Schrad. Native HEMA2

  Maximilian sunflower · Asteraceae 6 counties
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  Helianthus nuttallii Torr. & A. Gray Native HENU

  Nuttall's sunflower · Asteraceae 20 counties
• 
  Helianthus nuttallii Torr. & A. Gray ssp. nuttallii Native HENUN

  Nuttall's sunflower · Asteraceae 4 counties
• 
  Helianthus paradoxus Heiser Native HEPA2

  paradox sunflower · Asteraceae 1 county
• 
  Helianthus pauciflorus Nutt. Native HEPA19

  stiff sunflower · Asteraceae 8 counties
• 
  Helianthus pauciflorus Nutt. ssp. subrhomboideus (Rydb.) O. Spring & E. Schilling Native HEPAS

  stiff sunflower · Asteraceae 8 counties
• 
  Helianthus petiolaris Nutt. Native HEPE

  prairie sunflower · Asteraceae 37 counties
• 
  Helianthus petiolaris Nutt. ssp. fallax Heiser Native HEPEF

  prairie sunflower · Asteraceae 1 county
• 
  Helianthus petiolaris Nutt. ssp. petiolaris Native HEPEP

  prairie sunflower · Asteraceae 4 counties
• 
  Helianthus pumilus Nutt. Native HEPU3

  little sunflower · Asteraceae 9 counties
• 
  Helianthus tuberosus L. Native HETU

  Jerusalem artichoke · Asteraceae 3 counties
• ⚘
  Helictotrichon mortonianum (Scribn.) Henr. Native HEMO3

  Morton's alpine oatgrass · Poaceae 10 counties
• 
  Heliomeris multiflora Nutt. Native HEMU3

  showy goldeneye · Asteraceae 30 counties
• 
  Heliomeris multiflora Nutt. var. nevadensis (A. Nelson) Yates Native HEMUN

  Nevada goldeneye · Asteraceae 2 counties
• 
  Heliopsis helianthoides (L.) Sweet Native HEHE5

  smooth oxeye · Asteraceae 4 counties
• 
  Heliopsis helianthoides (L.) Sweet var. occidentalis (T.R. Fisher) Steyerm. Native HEHEO

  smooth oxeye · Asteraceae 4 counties
• 
  Heliotropium convolvulaceum (Nutt.) A. Gray Native HECO5

  phlox heliotrope · Boraginaceae 12 counties
• 
  Heliotropium convolvulaceum (Nutt.) A. Gray var. convolvulaceum Native HECOC7

  phlox heliotrope · Boraginaceae 12 counties
• 
  Heliotropium curassavicum L. Native HECU3

  salt heliotrope · Boraginaceae 7 counties
• 
  Heliotropium curassavicum L. var. obovatum DC. Native HECUO2

  seaside heliotrope · Boraginaceae 6 counties
• 
  Heracleum maximum W. Bartram Native HEMA80

  common cowparsnip · Apiaceae 27 counties
• 
  Hesperis matronalis L. Introduced HEMA3

  dames rocket · Brassicaceae 4 counties
• 
  Hesperostipa comata (Trin. & Rupr.) Barkworth Native HECO26

  needle and thread · Poaceae 48 counties
• 
  Hesperostipa comata (Trin. & Rupr.) Barkworth ssp. comata Native HECOC8

  needle and thread · Poaceae 44 counties
• 
  Hesperostipa neomexicana (Thurb. ex J.M. Coult.) Barkworth Native HENE5

  New Mexico feathergrass · Poaceae 13 counties
• 
  Hesperostipa spartea (Trin.) Barkworth Native HESP11

  porcupinegrass · Poaceae 4 counties
• 
  Heteranthera dubia (Jacq.) MacMill. Native HEDU2

  grassleaf mudplantain · Pontederiaceae 1 county
• 
  Heteranthera limosa (Sw.) Willd. Native HELI2

  blue mudplantain · Pontederiaceae 4 counties
• 
  Heterocodon rariflorum Nutt. Native HERA3

  rareflower heterocodon · Campanulaceae 1 county