Distribution: Occurring east of the Cascades crest in Washington; Washington, south through eastern Oregon, east to Idaho and Nevada.
Habitat: Shrub-steppe, sagebrush desert and ponderosa pine woodlands.
Flowers: April-June
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies, flies
Pubescent perennial from a thick root and rhizomes, the stems erect, 1-3 dm. tall.
Leaves with 5-9 leaflets, these rather thick, oblanceolate to obcordate, 1.5-2.5 cm. long; stipules ovate-lanceolate, their margins lacerate.
Heads mostly solitary and terminal, 3-5 cm. broad and long, the peduncles exceeding the leaves; flowers 22-28 mm. long, pale pinkish to rose-pink, spreading to erect, the pedicels very short; calyx 2/3 as long as the corolla, the 5 teeth awl-shaped, plumose, many times as long as the tube.
Pod 1-seeded.
PNW Herbaria: Specimen records of Trifolium macrocephalum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Trifolium macrocephalum checklist entry
OregonFlora: Trifolium macrocephalum information
E-Flora BC: Trifolium macrocephalum atlas page
CalPhotos: Trifolium macrocephalum photos