Identity
Unique IDELEMENT_GLOBAL.2.128364
Element CodePDAPI0U100
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderApiales
FamilyApiaceae
GenusCymopterus
Concept ReferenceKartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-11-13
Change Date1997-03-31
Edition Date2024-11-13
Edition AuthorsCaicco, S., rev. D. Gries (1997), rev. Johnson, J. (2024)
Threat ImpactLow
Range Extent250-1000 square km (about 100-400 square miles)
Number of Occurrences6 - 20
Rank ReasonsCymopterus douglassii is narrowly endemic to the central Lost River and Lemhi Ranges of east-central Idaho, United States. It is restricted to carbonate substrates at high elevations and is known from only ten occurrences in Custer and Lemhi Counties, but it is very abundant with all of the occurrences having thousands to ten thousands of individuals. It occurs on very rugged and remote mountains, does not have any hiking trails through any of the occurrences, and does not have any threats of disturbance.
Range Extent CommentsCymopterus douglassii is endemic to east-central Idaho, United States, in Custer and Lemhi Counties. Range extent was estimated using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1993 and 2024 (CPNWH 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Occurrences CommentsBy applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1993 and 2024, it is estimated that there are 10 occurrences rangewide (CPNWH 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact CommentsThre are few known threats to Cymopterus douglassii. There is apparently no livestock grazing of any population and wild ungulate herbivory appears minimal. Non-motorized trails are sparse and do not pass near or through any population. Only one 4WD road approaches the edge of one population (Horseheaven Pass North 003) with no impact to the population. There are no immediate mining threats. Climate change may be a concern but the anticipated impact is unknown (Moseley 1995, Matheny 2019).