Native to Arizona, British Columbia, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Washington, Wyoming (source: POWO). Flora of the World documents 2 occurrences across 1 country.
Helianthella uniflora
subsp. douglasii
Distribution from Plants of the World Online (POWO). View the accepted name on POWO
Location
United States, Idaho, Bear Lake (Montpelier)
42.431667, -111.562722
Location Remarks
Sherman Peak Area. Follow North Canyon Rd. (Forest Road 401) ) from Hwy 36 near E entrance to Emmigration Canyon. At intersection of Bartlett Lake and North Canyon Rd. (1.9 mi. from Hwy 36), go W on N Canyon Rd. past Mill Hollow Rd. At 4.7 mi. from Hwy 36 turn N at Meadow Creek (FR 425). Stop along Meadow Creek, ca. 0.8 mi. N of North Canyon Rd.
Collectors
Donald H. Mansfield, Bob McCoy, Brittni Brown, Christopher Davidson, Sharon R. Christoph
Notes
Mixed conifer forest of subalpine fir, Douglas fir, lodgepole pine,and aspen mixed with Artemisia tridentata ssp. vaseyana and snowberry. Substrate sloping. Taproot; opposite leaves, triple nerved; involucral bracts herbaceous, pappus 2 slender awns and fimbriate, scales.
Identified as
Helianthella uniflora subsp. douglasii
Location
United States, Idaho, Fremont (Island Park)
44.289333, -111.459389
Location Remarks
Intersection of Hwy 20 and Pinehaven Rd. ca. 16 km S of bridge in Island Park and 26 km N of Main St. in Ashton. Elev. 1868 m.
Collectors
Christopher Davidson, Sharon R. Christoph
Notes
Open, "dry" meadow in lodgepole pine forest.
Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Asterales
Family
Asteraceae
Genus
Helianthella
Specific Epithet
uniflora
Authorship
(Nutt.) Torr. & A.Gray
What is EDGE?
Evolutionary distinctiveness
Lower
ED 1.2
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
#262,611 of 335,497
Top 79%
Extinction probability
10%