Distribution: Occurring west of the Cascades crest in the San Juan Islands in Washington; southern Vancouver Island, Gulf Islands, and San Juan Islands, otherwise Willamette Valley, Oregon to California.
Habitat: Open forest, sandy embankments, and grassy balds on islands.
Flowers: April-June
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies, flies
[none provided]
Publication: Bot. Beechey Voy. 330. 1838.
Trifolium dichotomum Hook. & Arn. var. turbinatum Jeps.
Trifolium macraei Hook. & Arn. var. dichotomum (Hook. & Arn.) W.H. Brewer ex S. Watson [HC]
Trifolium petrophilum Greene ex A. Heller
PNW Herbaria: Specimen records of Trifolium dichotomum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Trifolium dichotomum checklist entry.
OregonFlora: Trifolium dichotomum information.
E-Flora BC: Trifolium dichotomum atlas page.
CalPhotos: Trifolium dichotomum photos.
USDA Plants: Trifolium dichotomum information.
