Wyoming Ecological Services
Mountain-Prairie Region

Federally Listed, Proposed & Candidate Species | Species of Concern | Migratory Birds | All Species By County



Federally Listed, Proposed and Candidate Species


Colorado Butterfly Plant
(Gaura neomexicana coloradensis)

Status: Threatened

Colorado Butterfly PlantPhoto Credit: FWS


Colorado Butterfly Plant Section 7 Range

Section 7 Range Symbol

Wyoming Section 7 Range
Colorado Butterfly Plant

Potential Distribution in Wyoming

For Species Lists, please use the IPaC System

Section 7 Range

Under Section 7 of the Endangered Species Act of 1973, Federal agencies, or project proponents whose actions have a Federal nexus (e.g., Federal funding, permit, or lease), must consult with the U. S. Fish and Wildlife Service if their actions “may affect” listed species (endangered, threatened, proposed, candidate) or their habitat.  Section 7 species ranges identify those areas on the landscape where agencies or proponents should consider potential effects, both direct and indirect, to the species and their habitat.  These Section 7 species ranges typically encompass larger areas than specific locations where listed species are known to occur.  Project proponents are encouraged to refer to the Service’s Information, Planning, and Conservation System (IPAC) website at http://ecos.fws.gov/ipac/ or to contact the FWS Wyoming Ecological Services Office for additional information http://www.fws.gov/wyominges/ :307-772-2374.  (Section 7 Range boundaries based on the best available data at time of development.  Section 7 Ranges will be updated as new information becomes available.)

Download Section 7 Range GIS Data or Section 7 Range Google Earth layers


Species Information

The Colorado butterfly plant (Gaura neomexicana coloradensis) is a perennial herb endemic to moist soils in wet meadows of flood plain areas.  This plant occurs in southeastern Wyoming, north-central Colorado, and extreme western Nebraska between elevations of 5,000 and 6,400 feet.  These plants are often found in low depressions or along bends in wide meandering stream channels a short distance upslope of the actual channel.  Threats to the plant include non-selective herbicide spraying, haying and mowing schedules that inhibit the setting of seed, land conversion for cultivation, and competition from noxious weeds.  Low numbers and limited distribution contribute to the plant’s vulnerability.  Surveys should be conducted during flowering season, which normally occurs in July and August.  Temporal variability in the flowering period exists from site to site and from year to year depending on annual climatic conditions.  Surveys should be conducted by knowledgeable botanists trained in conducting rare plant surveys.  The Service does not maintain a list of "qualified" surveyors but can refer those wishing to become familiar with the Colorado butterfly plant to experts who can provide training/services.  Critical habitat is designated for Colorado butterfly plant in specific wet meadows and riparian areas within Laramie and Platte Counties of Wyoming (see 50 CFR 17.96(a)).


Colorado Butterfly Plant Critical Habitat

Colorado Butterfly Plant Britical Habitat



Counties with Colorado Butterfly Plant Critical Habitat.

Laramie County | Platte County






Last updated: March 21, 2014