Distribution: Occurring on both sides of the Cascades crest throughout much of Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, wastelots, and other disturbed open areas.
Flowers: April-September
Origin: Introduced from Europe
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies, flies
Sparsely pubescent perennial, the stems several, ascending to erect, sometimes stolonous.
Leaves trifoliate, leaflets ovate to obovate or obcordate, 1-3 cm. long, serrulate; stipules 5-20 mm. long, tapering.
Inflorescence of many-flowered heads, 1.5-2.5 cm. broad and long, on axillary peduncles shorter to several times longer than the leaves; flowers pea-like, white to reddish, 5-9 mm. long, reflexed, the pedicels 1-5 mm. long; calyx less than half as long as the corolla, mostly glabrous, the 5 teeth awl-shaped, equal to the tube; banner nearly erect.
Pod 1-3 seeded.
PNW Herbaria: Specimen records of Trifolium hybridum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Trifolium hybridum checklist entry
OregonFlora: Trifolium hybridum information
E-Flora BC: Trifolium hybridum atlas page
CalPhotos: Trifolium hybridum photos