Native to Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Wyoming (source: POWO). Flora of the World documents 2 occurrences across 1 country.
Location
United States, Oregon, Malheur
43.776083, -117.754528
Location Remarks
Hwy 20, ca. 37 km east of Frances St. in Juntura, in Simmons Gulch. Elev. 852 m.
Collectors
Location
United States, Idaho, Idaho
45.244, -115.588639
Location Remarks
1.9 km N of Warren Summit on FSR 340, at Mayflower Creek Bridge. Elev. 1904 m.
Collectors
No collectors specified
Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Lamiales
Family
Orobanchaceae
Genus
Castilleja
Specific Epithet
chromosa
Authorship
A.Nelson
What is EDGE?
Evolutionary distinctiveness
Lower
ED 0.9
Part of a well-represented branch of the plant tree of life, with many close relatives.
Threat status
Modelled estimate
EDGE score
0.1
Global rank
#266,391 of 335,497
Top 80%
Extinction probability
11%