Endemic to Colorado and New Mexico; known from Archuleta County, and the extreme southern portion of Hinsdale County in Colorado, and one location in Rio Arriba County in New Mexico. Habitat destruction is the biggest threat to Lesquerella pruinosa, especially considering its limited range. Residential growth and development around the city of Pagosa Springs, including a proposed ski resort, threaten occurrences.
Habitat destruction results from soil disturbance, recreational use such as off-road vehicle, and residential, commercial, airport, and ski resort construction (Von Bargen 1997).
This species is currently known from 14 occurrences, all within Archuleta County (Neely 1990). A total count of one population of L. pruinosa was estimated at 4,250 by Anderson (1998). However, following a field survey in 1991 near Gordon Creek, approximately twice that number of plants were found at this occurrence alone (A.T. Carpenter, personal observation).
There is no formal plan for this species drafted.
All aspects of this species' ecology and biology need to be studied, including its life history and population dynamics.
Seed collection and storage.
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