Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to California.
Habitat: Balds, grasslands, and prairies at low elevations, often where dry and rocky.
Flowers: April-June
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies, flies
[none provided]
PNW Herbaria: Specimen records of Trifolium oliganthum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Trifolium oliganthum checklist entry
OregonFlora: Trifolium oliganthum information
E-Flora BC: Trifolium oliganthum atlas page
CalPhotos: Trifolium oliganthum photos