UW Burke Herbarium species comparison

Leaves with 5-9 leaflets, these rather thick, oblanceolate to obcordate, 1.5-2.5 cm. long;

stipules ovate-lanceolate, their margins lacerate.

Leaves trifoliate, petioled;

leaflets linear to narrowly oblong, 1-4 cm. long, usually serrulate full length;

stipules ovate, lacerate, nearly half as long as the leaflets.

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.

Inflorescence of 6- to 60-flowered, involucrate heads 10-30 mm. broad and long on axillary peduncles;

involucre flared and saucer-shaped, irregularly lacerate into many unequal teeth;

calyx often purplish, the tube 15-25 nerved, the 5 teeth lanceolate, equal to the tube;

corolla pea-like, purplish, often lighter or darker at the tip, slightly longer than the calyx.

Pod 1-seeded.

Pod usually 2-seeded.