Distribution: Occurring west of the Cascades crest in the Puget Trough region in Washington; also occurring in southern Oregon and northern California.
Habitat: Roadsides, fields, meadows, lawns, wastelots, and other disturbed open areas at low elevations.
Flowers: April-June
Origin: Introduced from Europe
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies, flies
[none provided]
Publication: Demonstrationes Plantarum 21. 1753.
PNW Herbaria: Specimen records of Trifolium retusum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Trifolium retusum checklist entry.
OregonFlora: Trifolium retusum information.
E-Flora BC: Trifolium retusum atlas page.
CalPhotos: Trifolium retusum photos.
USDA Plants: Trifolium retusum information.
