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 3,951–4,000 of 4,111.

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  Trifolium parryi A. Gray ssp. salictorum (Greene ex Rydb.) J.M. Gillett Native TRPAS

  Parry's clover · Fabaceae 10 counties
• 
  Trifolium pratense L. Introduced TRPR2

  red clover · Fabaceae 18 counties
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  Trifolium repens L. Introduced TRRE3

  white clover · Fabaceae 29 counties
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  Trifolium wormskioldii Lehm. Native TRWO

  cows clover · Fabaceae 10 counties
• 
  Triglochin maritima L. Native TRMA20

  seaside arrowgrass · Juncaginaceae 24 counties
• 
  Triglochin palustris L. Native TRPA28

  marsh arrowgrass · Juncaginaceae 12 counties
• 
  Trillium ovatum Pursh Native TROV2

  Pacific trillium · Liliaceae 2 counties
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  Trillium ovatum Pursh ssp. ovatum Native TROVO2

  Pacific trillium · Liliaceae 2 counties
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  Triodanis holzingeri McVaugh Native TRHO2

  Holzinger's Venus' looking-glass · Campanulaceae 2 counties
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  Triodanis leptocarpa (Nutt.) Nieuwl. Native TRLE3

  slimpod Venus' looking-glass · Campanulaceae 1 county
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  Triodanis perfoliata (L.) Nieuwl. Native TRPE4

  clasping Venus' looking-glass · Campanulaceae 8 counties
• 
  Triplasis purpurea (Walter) Chapm. Native TRPU4

  purple sandgrass · Poaceae 10 counties
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  Tripleurospermum perforatum (Mérat) M. Lainz Introduced TRPE21

  scentless false mayweed · Asteraceae 8 counties
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  Tripterocalyx carneus (Greene) L.A. Galloway Native TRCA34

  winged sandpuffs · Nyctaginaceae 2 counties
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  Tripterocalyx carneus (Greene) L.A. Galloway var. wootonii (Standl.) L.A. Galloway Native TRCAW2

  Wooton's sandpuffs · Nyctaginaceae 2 counties
• 
  Tripterocalyx micranthus (Torr.) Hook. Native TRMI6

  smallflower sandverbena · Nyctaginaceae 16 counties
• 
  Trisetum spicatum (L.) K. Richt. Native TRSP2

  spike trisetum · Poaceae 31 counties
• 
  Trisetum wolfii Vasey Native TRWO3

  Wolf's trisetum · Poaceae 14 counties
• 
  Triteleia grandiflora Lindl. Native TRGR7

  largeflower triteleia · Liliaceae 1 county
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  Triteleia grandiflora Lindl. var. grandiflora Native TRGRG2

  largeflower triteleia · Liliaceae 1 county
• 
  Triticum aestivum L. Introduced TRAE

  common wheat · Poaceae 8 counties
• 
  Trollius laxus Salisb. Native TRLA14

  American globeflower · Ranunculaceae 28 counties
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  Trollius laxus Salisb. ssp. albiflorus (A. Gray) Á. Löve & D. Löve & Kapoor Native TRLAA2

  American globeflower · Ranunculaceae 28 counties
• 
  Typha angustifolia L. Both TYAN

  narrowleaf cattail · Typhaceae 20 counties
• 
  Typha domingensis Pers. Native TYDO

  southern cattail · Typhaceae 9 counties
• 
  Typha latifolia L. Native TYLA

  broadleaf cattail · Typhaceae 26 counties
• 
  Ulmus americana L. Native ULAM

  American elm · Ulmaceae 4 counties
• 
  Ulmus parvifolia Jacq. Introduced ULPA

  Chinese elm · Ulmaceae 1 county
• 
  Ulmus pumila L. Introduced ULPU

  Siberian elm · Ulmaceae 14 counties
• 
  Ulmus rubra Muhl. Native ULRU

  slippery elm · Ulmaceae 1 county
• 
  Urtica dioica L. Both URDI

  stinging nettle · Urticaceae 30 counties
• 
  Urtica dioica L. ssp. gracilis (Aiton) Seland. Native URDIG

  California nettle · Urticaceae 29 counties
• 
  Urtica dioica L. ssp. holosericea (Nutt.) Thorne Native URDIH

  stinging nettle · Urticaceae 1 county
• 
  Utricularia macrorhiza Leconte Native UTMA

  common bladderwort · Lentibulariaceae 10 counties
• 
  Utricularia minor L. Native UTMI

  lesser bladderwort · Lentibulariaceae 4 counties
• ⚘
  Utricularia ochroleuca R.W. Hartm. Native UTOC

  yellowishwhite bladderwort · Lentibulariaceae 2 counties
• 
  Vaccaria hispanica (Mill.) Rauschert Introduced VAHI2

  cow soapwort · Caryophyllaceae 7 counties
• 
  Vaccinium cespitosum Michx. Native VACE

  dwarf bilberry · Ericaceae 21 counties
• 
  Vaccinium myrtillus L. Native VAMY2

  whortleberry · Ericaceae 15 counties
• 
  Vaccinium scoparium Leiberg ex Coville Native VASC

  grouse whortleberry · Ericaceae 14 counties
• 
  Vahlodea atropurpurea (Wahlenb.) Fr. ex Hartm. Native VAAT2

  mountain hairgrass · Poaceae 7 counties
• 
  Valeriana acutiloba Rydb. Native VAAC

  sharpleaf valerian · Valerianaceae 31 counties
• 
  Valeriana acutiloba Rydb. var. acutiloba Native VAACA

  sharpleaf valerian · Valerianaceae 31 counties
• 
  Valeriana arizonica A. Gray Native VAAR3

  Arizona valerian · Valerianaceae 4 counties
• 
  Valeriana edulis Nutt. ex Torr. & A. Gray Native VAED

  tobacco root · Valerianaceae 33 counties
• 
  Valeriana edulis Nutt. ex Torr. & A. Gray var. edulis Native VAEDE

  tobacco root · Valerianaceae 33 counties
• 
  Valeriana occidentalis A. Heller Native VAOC2

  western valerian · Valerianaceae 14 counties
• 
  Veratrum californicum Durand Native VECA2

  California false hellebore · Liliaceae 1 county
• 
  Veratrum californicum Durand var. californicum Native VECAC2

  California false hellebore · Liliaceae 1 county
• ⚘
  Veratrum tenuipetalum A. Heller Native VETE4

  Colorado false hellebore · Liliaceae 17 counties