Distribution: Occurring in the Columbia River Gorge in Washington; southern British Columbia, Columbia River Gorge, and Lower Columbia River, also in southwestern Oregon.
Habitat: Lake margins and sand bars.
Flowers: July-October
Origin: Native?
Growth Duration: Annual
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Coleanthus subtilis in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Coleanthus subtilis checklist entry
OregonFlora: Coleanthus subtilis information
E-Flora BC: Coleanthus subtilis atlas page
CalPhotos: Coleanthus subtilis photos