Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Moist soil to standing water, stream and lake margins to grasslands.
Flowers: June--July
Origin: Native
Growth Duration: Annual, Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Sphenopholis obtusata in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Sphenopholis obtusata checklist entry
OregonFlora: Sphenopholis obtusata information
E-Flora BC: Sphenopholis obtusata atlas page
CalPhotos: Sphenopholis obtusata photos