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Connects federal and state conservation listings with occurrence data and habitat documentation for rare and threatened plant species across Colorado's mountain and rangeland ecosystems.
Rare Plant Conservation and Threatened Species Status in Colorado
Colorado harbors a remarkable diversity of rare plants, many of which are narrowly endemic to specific soils, elevations, or geologic substrates found in the southern Rockies and Colorado Plateau. Conservation status — the formal classification of a species' risk of extinction — determines whether plants and animals receive legal protection at the state or federal level. Designations range from species of concern to threatened and endangered, with the most imperiled receiving full protection under the federal Endangered Species Act (ESA). In the Gunnison Basin and across western Colorado, this framework matters because the region supports rare endemics such as Neoparrya lithophila (a rare parsley in the Apiaceae family), Eriogonum lonchophyllum, and Sclerocactus glaucus, alongside iconic imperiled species like the Mesa Verde cactus (Sclerocactus mesae-verdae). Tracking these species and preventing extinctions — the permanent loss of evolutionary lineages — is central to maintaining the basin's biological heritage.
Conservation policy in Colorado also extends beyond plants to aquatic systems, where managers contend with whirling disease (a parasitic infection caused by Myxobolus cerebralis that deforms salmonid fishes), the legacy of the hatchery system that propagates fish for recreational angling, and non-native stocking practices that have historically introduced species outside their native range. Together, these terrestrial and aquatic concerns shape a policy landscape that touches ranchers, anglers, botanists, county planners, and federal land managers throughout the Gunnison Basin and western Colorado.
The modern framework for rare plant protection in Colorado grew out of the early implementation of the federal Endangered Species Act of 1973. The U.S. Department of the Interior and the Fish & Wildlife Service, working with the U.S. Forest Service, produced An Illustrated Guide to the Proposed Threatened and Endangered Plant Species in Colorado (1975–1977), which inventoried candidate species including Stellaria irrigua, Sullivantia purpusii, Phacelia formosula, and Braya humilis and established baseline distributions used in later Federal Register listings. Subsequent regional syntheses, notably the Southwestern Rare and Endangered Plants proceedings from the Second Southwestern Rare and Endangered Plants: Proceedings of t...and Third conferences (the latter in Flagstaff, Arizona, 2000), refined understanding of how rare plant assemblages cross state boundaries in the Southwest.
Wildlife survey (1975-1977). Covers Colorado, Gunnison Basin, Denver. Topics: threatened and endangered species, flora identification, habitat conserv...
Management plan (1996-1997). Covers Colorado, Lamar, Denver. Topics: fish management, habitat protection, recovery programs, basin management plan. Ag...
Technical report. Topics: seed use, native species, rangelands. Cites 1 external work.
Technical report (2000). Covers Flagstaff, Arizona. Topics: rare and endangered plants. Agencies: USFS. Cites 1 external work.
Technical report. Covers Southwest. Topics: rare and endangered plants. Cites 1 external work.
A dataset containing 648 species occurrences available in GBIF matching the query: { "DatasetKey" : [ "is Rocky Mountain Biological Laboratory Mammal ...
A dataset listing the 1870 species recorded in GBIF matching the query: { "DatasetKey" : [ "is Rocky Mountain Biological Laboratory" ] } The dataset's...
A dataset containing 905116 species occurrences available in GBIF matching the query: { "and" : [ "BasisOfRecord is Specimen", { "or" : [ "DatasetKey ...
For aquatic species, the Colorado Division of Wildlife (now part of Colorado Parks and Wildlife) codified its approach in the Statewide Fish Management Policy (1996–1997), which formalized habitat protection, recovery programs, and basin-level planning under the Colorado Wildlife Commission. At the local scale, the Gunnison County Comprehensive Plan, Background Data – Volume 1 Gunnison County Comprehensive Plan, Background Data – Vol... incorporated rare species and habitat information into county land-use planning, linking federal listings to on-the-ground zoning and growth decisions.
Key stakeholders include the U.S. Fish & Wildlife Service, which administers ESA listings and recovery plans published in the Federal Register; the U.S. Forest Service, which manages habitat for sensitive species on national forest lands; the Colorado Department of Natural Resources and its Division of Wildlife, which lead state-level fish and wildlife management Statewide Fish Management Policy; and the Colorado Native Plant Society, which contributes survey effort, advocacy, and outreach for rare flora. Gunnison County itself plays a planning role through its comprehensive plan Gunnison County Comprehensive Plan, Background Data – Vol....
Management approaches combine regulatory protection with active restoration. Seed-based restoration of disturbed lands, addressed in Proceedings: Using Seeds of Native Species on Rangelands Proceedings: Using Seeds of Native Species on Rangelands, provides tools to rebuild native plant communities containing species such as Trifolium gymnocarpon and Cryptantha elata. For fishes, recovery programs coordinate hatchery production, disease screening for whirling disease, and restrictions on non-native stocking to protect native salmonids and warmwater species. Site-specific surveys — increasingly aided by computational tools like GBIF (Global Biodiversity Information Facility) occurrence downloads — help managers locate populations of cryptic taxa such as Ligularia soldanella and Eutrema edwardsii in remote terrain near Hoosier Pass and the White River Valley.
Climate change, expanding recreation, energy development, and rural residential growth are altering habitats faster than listing and recovery processes can respond. Narrow endemics restricted to shale outcrops or alpine seeps — including Sullivantia purpusii and Stellaria irrigua — are especially vulnerable because their entire global ranges may lie within a few watersheds. The Southwestern Rare and Endangered Plants proceedings Southwestern Rare and Endangered Plants: Proceedings of t... Southwestern Rare and Endangered Plants: Proceedings of t...flag the need for cross-jurisdictional monitoring, while the Gunnison County Comprehensive Plan Gunnison County Comprehensive Plan, Background Data – Vol...highlights tensions between conservation and development at the county scale. For aquatic systems, whirling disease persistence and the continued ecological footprint of the hatchery system raise questions about whether non-native stocking should be curtailed in favor of native fish restoration, themes embedded in the Statewide Fish Management Policy Statewide Fish Management Policy.
Scientific research at RMBL and throughout the Gunnison Basin provides the demographic, phenological, and distributional data that underpin conservation status decisions. Long-term plant monitoring informs models of how rare endemics respond to warming and snowpack change, while pollinator and community studies illuminate the ecological networks rare plants depend on. Occurrence datasets aggregated through GBIF, combined with field surveys catalogued in the Illustrated Guide to proposed listings An Illustrated Guide to the Proposed Threatened and Endan..., allow researchers and managers to refine range maps for species like Neoparrya lithophila and Sclerocactus glaucus, ensuring that policy keeps pace with biological reality.
An Illustrated Guide to the Proposed Threatened and Endangered Plant Species in Colorado. →
Gunnison County Comprehensive Plan, Background Data – Volume 1. →
Proceedings: Using Seeds of Native Species on Rangelands. →
Southwestern Rare and Endangered Plants: Proceedings of the Second Conference. →
Southwestern Rare and Endangered Plants: Proceedings of the Third Conference. →
Statewide Fish Management Policy. →