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 101–150 of 3,643 (native).

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  Alopecurus aequalis Sobol. var. aequalis Native ALAEA

  shortawn foxtail · Poaceae 32 counties
• 
  Alopecurus magellanicus Lam. Native ALMA8

  Alpine Meadow-Foxtail · Poaceae 9 counties
• 
  Amaranthus acanthochiton Sauer Native AMAC

  greenstripe · Amaranthaceae 1 county
• 
  Amaranthus arenicola I.M. Johnst. Native AMAR

  sandhill amaranth · Amaranthaceae 21 counties
• 
  Amaranthus hybridus L. Native AMHY

  slim amaranth · Amaranthaceae 3 counties
• 
  Amaranthus palmeri S. Watson Native AMPA

  carelessweed · Amaranthaceae 7 counties
• 
  Amaranthus powellii S. Watson Native AMPO2

  Powell's amaranth · Amaranthaceae 4 counties
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  Amaranthus powellii S. Watson ssp. powellii Native AMPOP

  Powell's amaranth · Amaranthaceae 2 counties
• 
  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae 31 counties
• 
  Amaranthus tuberculatus (Moq.) Sauer Native AMTU

  roughfruit amaranth · Amaranthaceae 1 county
• 
  Amaranthus wrightii S. Watson Native AMWR

  Wright's amaranth · Amaranthaceae 3 counties
• 
  Ambrosia acanthicarpa Hook. Native AMAC2

  flatspine bur ragweed · Asteraceae 22 counties
• 
  Ambrosia confertiflora DC. Native AMCO3

  weakleaf bur ragweed · Asteraceae 5 counties
• 
  Ambrosia grayi (A. Nelson) Shinners Native AMGR5

  woollyleaf bur ragweed · Asteraceae 6 counties
• 
  Ambrosia linearis (Rydb.) Payne Native AMLI3

  streaked bur ragweed · Asteraceae 4 counties
• 
  Ambrosia psilostachya DC. Native AMPS

  Cuman ragweed · Asteraceae 25 counties
• 
  Ambrosia tomentosa Nutt. Native AMTO3

  skeletonleaf bur ragweed · Asteraceae 15 counties
• 
  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae 16 counties
• 
  Ambrosia trifida L. var. trifida Native AMTRT2

  great ragweed · Asteraceae 15 counties
• 
  Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. Native AMAL2

  Saskatoon serviceberry · Rosaceae 36 counties
• 
  Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. var. alnifolia Native AMALA

  Saskatoon serviceberry · Rosaceae 36 counties
• ⚘
  Amelanchier pumila (Torr. & A. Gray) Nutt. ex M. Roem. Native AMPU5

  dwarf serviceberry · Rosaceae 1 county
• 
  Amelanchier utahensis Koehne Native AMUT

  Utah serviceberry · Rosaceae 22 counties
• 
  Amelanchier utahensis Koehne var. utahensis Native AMUTU

  Utah serviceberry · Rosaceae 22 counties
• 
  Ammannia robusta Heer & Regel Native AMRO3

  grand redstem · Lythraceae 4 counties
• 
  Amorpha canescens Pursh Native AMCA6

  leadplant · Fabaceae 6 counties
• 
  Amorpha fruticosa L. Native AMFR

  false indigo bush · Fabaceae 15 counties
• 
  Amorpha nana Nutt. Native AMNA

  dwarf false indigo · Fabaceae 5 counties
• 
  Amsinckia lycopsoides Lehm. Native AMLY

  tarweed fiddleneck · Boraginaceae 1 county
• 
  Amsinckia menziesii (Lehm.) A. Nelson & J.F. Macbr. Native AMME

  Menzies' fiddleneck · Boraginaceae 2 counties
• 
  Amsinckia menziesii (Lehm.) A. Nelson & J.F. Macbr. var. menziesii Native AMMEM2

  Menzies' fiddleneck · Boraginaceae 2 counties
• 
  Amsonia jonesii Woodson Native AMJO

  Jones' bluestar · Apocynaceae 3 counties
• 
  Anagallis minima (L.) Krause Native ANMI4

  chaffweed · Primulaceae 1 county
• 
  Anaphalis margaritacea (L.) Benth. Native ANMA

  western pearly everlasting · Asteraceae 21 counties
• 
  Andropogon gerardii Vitman Native ANGE

  big bluestem · Poaceae 14 counties
• 
  Andropogon hallii Hack. Native ANHA

  sand bluestem · Poaceae 19 counties
• 
  Androsace chamaejasme Wulfen Native ANCH

  sweetflower rockjasmine · Primulaceae 11 counties
• 
  Androsace chamaejasme Wulfen ssp. carinata (Torr.) Hultén Native ANCHC

  sweetflower rockjasmine · Primulaceae 11 counties
• 
  Androsace filiformis Retz. Native ANFI

  filiform rockjasmine · Primulaceae 7 counties
• 
  Androsace occidentalis Pursh Native ANOC2

  western rockjasmine · Primulaceae 12 counties
• 
  Androsace septentrionalis L. Native ANSE4

  pygmyflower rockjasmine · Primulaceae 39 counties
• 
  Androstephium breviflorum S. Watson Native ANBR4

  pink funnel lily · Liliaceae 6 counties
• 
  Anemone canadensis L. Native ANCA8

  Canadian anemone · Ranunculaceae 16 counties
• 
  Anemone cylindrica A. Gray Native ANCY

  candle anemone · Ranunculaceae 10 counties
• 
  Anemone multifida Poir. Native ANMU

  Pacific anemone · Ranunculaceae 33 counties
• 
  Anemone multifida Poir. var. multifida Native ANMUM3

  Pacific anemone · Ranunculaceae 1 county
• 
  Anemone narcissiflora L. Native ANNA

  narcissus anemone · Ranunculaceae 11 counties
• 
  Anemone narcissiflora L. var. zephyra (A. Nelson) Dutton & Keener Native ANNAZ2

  narcissus anemone · Ranunculaceae 11 counties
• 
  Anemone parviflora Michx. Native ANPA

  smallflowered anemone · Ranunculaceae 3 counties
• 
  Anemone parviflora Michx. var. parviflora Native ANPAP2

  smallflowered anemone · Ranunculaceae 3 counties