Native to Arizona, British Columbia, California, Colorado, Idaho, Mexico Central, Mexico Northeast, Mexico Northwest, Mexico Southwest, Montana, Nevada, New Mexico, Oregon, Texas, Utah, Washington, Wyoming; introduced into Great Britain (source: POWO). Flora of the World documents 5 occurrences across 1 country.
Holodiscus discolor
var. glabrescens
var. microphyllus
Distribution from Plants of the World Online (POWO). View the accepted name on POWO
Identified as
Holodiscus discolor var. glabrescens
Location
United States, Idaho, Owyhee (Hammett)
42.904333, -115.692611
Location Remarks
Bruneau Canyon Scenic Overlook, 25 km south of Bruneau (ssmall town) on Hot Springs Rd., then 5 km west on unnamed road (Scenic overlook sign) to the canyon rim. 2240 m elev.
Collectors
Christopher Davidson, Sharon R. Christoph, Roy E. Gereau, Charlotte M. Taylor
Notes
Mixed conifer forest, mostly Douglas fir. Sandy, gravelly soil. Shrub 1 m.
Identified as
Holodiscus discolor var. microphyllus
Location
United States, Oregon, Harney (Princeton)
42.666944, -118.711194
Location Remarks
South Steens Mountain Loop, c. 6 km east of bridge at Donner and Blitzen River. 1806 m elev.
Collectors
Christopher Davidson, Charlotte M. Taylor, Roy E. Gereau, Sharon R. Christoph
Notes
Rocky hillside east of the road; within sagebrush steppe. Shrub 1.5-2 m.
Location
United States, Idaho, Idaho (McCall)
45.244, -115.588639
Location Remarks
1.9 km N of Warren Summit on FSR 340, at Mayflower Creek Bridge. Elev. 1904 m.
Collectors
Christopher Davidson, Charlotte M. Taylor, Roy E. Gereau, Sharon R. Christoph
Location
United States, Oregon, Hood River (Hood River)
45.676583, -121.462833
Location Remarks
East of Hood River: Old Dalles Road , 2 miles E of East Side Drive
Collectors
Location
United States, Idaho, Adams (New Meadows)
45.189778, -116.304556
Location Remarks
Hwy 55 along the Little Salmon River. Ca. 19 km S of Pollock. Coarse basalt gravel on roadside turnout above the river. 976 m elev.
Collectors
Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Rosales
Family
Rosaceae
Genus
Holodiscus
Specific Epithet
discolor
Authorship
(Pursh) Maxim.
What is EDGE?
Evolutionary distinctiveness
Lower
ED 8.0
Part of a well-represented branch of the plant tree of life, with many close relatives.
Threat status
Modelled estimate
EDGE score
0.5
Global rank
#88,871 of 335,497
Top 27%
Extinction probability
10%