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 3,701–3,750 of 4,111.

• 
  Spartina pectinata Bosc ex Link Native SPPE

  prairie cordgrass · Poaceae 13 counties
• 
  Spergula arvensis L. Introduced SPAR

  corn spurry · Caryophyllaceae 1 county
• 
  Spergularia maritima (All.) Chiov. Introduced SPMA10

  media sandspurry · Caryophyllaceae 3 counties
• 
  Spergularia rubra (L.) J. Presl & C. Presl Introduced SPRU

  red sandspurry · Caryophyllaceae 11 counties
• 
  Spergularia salina J. Presl & C. Presl Native SPSA5

  salt sandspurry · Caryophyllaceae 2 counties
• 
  Sphaeralcea angustifolia (Cav.) G. Don Native SPAN3

  copper globemallow · Malvaceae 7 counties
• 
  Sphaeralcea coccinea (Nutt.) Rydb. Native SPCO

  scarlet globemallow · Malvaceae 51 counties
• 
  Sphaeralcea coccinea (Nutt.) Rydb. ssp. coccinea Native SPCOC

  scarlet globemallow · Malvaceae 39 counties
• 
  Sphaeralcea digitata (Greene) Rydb. Native SPDI3

  juniper globemallow · Malvaceae 1 county
• 
  Sphaeralcea fendleri A. Gray Native SPFE

  Fendler's globemallow · Malvaceae 4 counties
• 
  Sphaeralcea fendleri A. Gray ssp. fendleri Native SPFEF

  Fendler's globemallow · Malvaceae 4 counties
• 
  Sphaeralcea grossulariifolia (Hook. & Arn.) Rydb. Native SPGR2

  gooseberryleaf globemallow · Malvaceae 1 county
• 
  Sphaeralcea grossulariifolia (Hook. & Arn.) Rydb. ssp. pedata (Torr. ex A. Gray) Kearney Native SPGRP2

  gooseberryleaf globemallow · Malvaceae 1 county
• 
  Sphaeralcea hastulata A. Gray Native SPHA

  spear globemallow · Malvaceae 1 county
• 
  Sphaeralcea incana Torr. ex A. Gray Native SPIN2

  gray globemallow · Malvaceae 1 county
• 
  Sphaeralcea incana Torr. ex A. Gray ssp. cuneata Kearney Native SPINC

  soft globemallow · Malvaceae 1 county
• 
  Sphaeralcea leptophylla (A. Gray) Rydb. Native SPLE

  scaly globemallow · Malvaceae 3 counties
• 
  Sphaeralcea parvifolia A. Nelson Native SPPA2

  small-leaf globemallow · Malvaceae 6 counties
• 
  Sphaeromeria argentea Nutt. Native SPAR2

  silver chickensage · Asteraceae 1 county
• 
  Sphaeromeria capitata Nutt. Native SPCA8

  rock tansy · Asteraceae 1 county
• 
  Sphaerophysa salsula (Pall.) DC. Introduced SPSA3

  alkali swainsonpea · Fabaceae 6 counties
• 
  Sphenopholis obtusata (Michx.) Scribn. Native SPOB

  prairie wedgescale · Poaceae 20 counties
• 
  Spiraea douglasii Hook. Native SPDO

  rose spirea · Rosaceae 1 county
• 
  Spiraea douglasii Hook. var. menziesii (Hook.) C. Presl Native SPDOM

  Menzies' spirea · Rosaceae 1 county
• 
  Spiraea trilobata L. Introduced SPTR2

  Asian meadowsweet · Rosaceae 1 county
• 
  Spiranthes diluvialis Sheviak Native SPDI6

  Ute lady's tresses · Orchidaceae 2 counties
• 
  Spiranthes romanzoffiana Cham. Native SPRO

  hooded lady's tresses · Orchidaceae 20 counties
• 
  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae 3 counties
• 
  Sporobolus airoides (Torr.) Torr. Native SPAI

  alkali sacaton · Poaceae 29 counties
• 
  Sporobolus compositus (Poir.) Merr. Native SPCO16

  composite dropseed · Poaceae 13 counties
• 
  Sporobolus compositus (Poir.) Merr. var. compositus Native SPCOC2

  composite dropseed · Poaceae 13 counties
• 
  Sporobolus contractus Hitchc. Native SPCO4

  spike dropseed · Poaceae 5 counties
• 
  Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

  sand dropseed · Poaceae 37 counties
• 
  Sporobolus flexuosus (Thurb. ex Vasey) Rydb. Native SPFL2

  mesa dropseed · Poaceae 2 counties
• 
  Sporobolus giganteus Nash Native SPGI

  giant dropseed · Poaceae 5 counties
• 
  Sporobolus heterolepis (A. Gray) A. Gray Native SPHE

  prairie dropseed · Poaceae 4 counties
• 
  Sporobolus nealleyi Vasey Native SPNE

  gyp dropseed · Poaceae 4 counties
• 
  Sporobolus neglectus Nash Native SPNE2

  puffsheath dropseed · Poaceae 1 county
• 
  Sporobolus pyramidatus (Lam.) Hitchc. Native SPPY2

  Madagascar dropseed · Poaceae 1 county
• 
  Sporobolus texanus Vasey Native SPTE5

  Texas dropseed · Poaceae 2 counties
• 
  Sporobolus wrightii Munro ex Scribn. Native SPWR2

  big sacaton · Poaceae 1 county
• 
  Stachys coccinea Ortega Native STCO

  scarlet hedgenettle · Lamiaceae 1 county
• 
  Stachys pilosa Nutt. Native STPI6

  hairy hedgenettle · Lamiaceae 21 counties
• 
  Stachys pilosa Nutt. var. pilosa Native STPIP5

  hairy hedgenettle · Lamiaceae 21 counties
• 
  Stachys rothrockii A. Gray Native STRO

  Rothrock's hedgenettle · Lamiaceae 1 county
• 
  Stanleya albescens M.E. Jones Native STAL2

  white princesplume · Brassicaceae 3 counties
• 
  Stanleya pinnata (Pursh) Britton Native STPI

  desert princesplume · Brassicaceae 24 counties
• 
  Stanleya pinnata (Pursh) Britton var. pinnata Native STPIP

  desert princesplume · Brassicaceae 23 counties
• 
  Stanleya viridiflora Nutt. Native STVI

  green princesplume · Brassicaceae 2 counties
• 
  Stellaria calycantha (Ledeb.) Bong. Native STCA

  northern starwort · Caryophyllaceae 14 counties