Restricted to EOO 649km2, AOO 48km2, 2 locations, and ongoing decline in quality of habitat and total number of individuals.
Steve Leavitt et al. (2019) confirmed species status.
Why suggested for a Global Red List Assessment?
Restricted to two valleys in eastern Idaho.
EOO = 649 km2
Area of Occupancy = 48 km2
Population and Trends
Can be very locally abundant, with subpopulation sizes in the thousands. But subpopulations are very isolated. Subpopulations have probably been fragmented by sheep grazing and road construction. Probably over 20 subpopulations. Only two locations if sheep grazing can affect an entire valley.
Population Trend: Decreasing
Habitat and Ecology
Deep gravel calcareous alluvium basins and benches between 2100 and 2400 m.
The main threat is from sheep grazing. Cattle apparently do not impact this species. Road construction fragments subpopulations because these vagrant lichens tend to be trapped by and accumulate into road ditches which are unfavorable microsites. Some invasive species may tend to exclude this lichen.
Agro-industry farmingRoads & railroads
This species is state listed in Idaho as S2. Is there a way to mitigate the obstruction of gravel roads in the area?
Site/area protectionInvasive/problematic species control
More on the ground surveys to locate possible additional locations (e.g. other valleys with similar geology). Monitoring projects to quantify the rate of decline in population sizes.
Population size, distribution & trendsArea-based Management PlanPopulation trends
Use and Trade
There are no known commercial uses of this lichen.