Regularity: Regularly occurring
Localities documented in Tropicos sources
United States (North America)
Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
Global Range: Endemic to mountains of western Interior and Northwest Alaska.
Comments: Alpine tundra and fell-fields; not a calciphile.
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 21 - 80
Comments: Known from at least 17 locations in remote areas where it is consistently found in appropriate habitat. It is very likely to be found at additional locations.
National NatureServe Conservation Status
Rounded National Status Rank: N3 - Vulnerable
NatureServe Conservation Status
Rounded Global Status Rank: G3 - Vulnerable
Reasons: A striking endemic that is known from at least 17 locations. This distinctive species is almost certain to be found at additional sites within its known range. No immediate threats are known.
Comments: No global threats are known for this species.
Names and Taxonomy
Comments: A distinctive endemic of the mountains of western Interior Alaska.