Native to California, Colorado, Idaho, New Mexico, Oregon, Utah, Washington (source: POWO). Flora of the World documents 3 occurrences across 1 country.
Corydalis caseana
subsp. cusickii
subsp. hastata
Distribution from Plants of the World Online (POWO). View the accepted name on POWO
Identified as
Corydalis caseana subsp. hastata
Location
United States, Idaho, Shoshone (Clarkia)
47.086694, -116.11375
Location Remarks
Hobo Cedar Grove (Hwy 3 to Clarkia, E on FR 321, Hobo Pass along Merry Cr. to FR 321). Elev. 1367 m.
Collectors
Christopher Davidson, Sharon R. Christoph
Notes
Needle litter above small stream bank. Shady with Alder, Sorbus, Claytonia, Athyrium in Doug fir/cedar forest. Perianth lobes all magenta.
Identified as
Corydalis caseana subsp. cusickii
Location
United States, Idaho, Valley (Cascade)
44.158, -116.118361
Location Remarks
Highway 55 c. 10 km north of the bridge at Banks. Mixed conifer forest along the N. Fork Payette River.
Collectors
Christopher Davidson, Charlotte M. Taylor, Roy E. Gereau, Sharon R. Christoph
Notes
Cool, shady, humid stream bank (Trail Cr.), in mixed conifer forest (ponderosa, D. fir, lodgepole). N slope. Large herb, to 1 m. Explosive dehiscence.
Location
United States, Idaho, Boise (Lowman)
44.083139, -115.754194
Location Remarks
Ca. 4.2 km N of Banks-Lowman Rd (Hwy 17) on Scott Mtn Lookout Rd. (FSR 555BC). Elev. 1170 m.
Collectors
Christopher Davidson, Sharon R. Christoph
Notes
Abies stand in a sheltered streamside meadow. E. Fork of Big Pine Cr. Tall herb 0.75 m.
Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Ranunculales
Family
Papaveraceae
Genus
Corydalis
Specific Epithet
caseana
Authorship
A.Gray
What is EDGE?
Evolutionary distinctiveness
Lower
ED 8.4
Part of a well-represented branch of the plant tree of life, with many close relatives.
Threat status
Modelled estimate
EDGE score
0.7
Global rank
#66,671 of 335,497
Top 20%
Extinction probability
9%