UW Burke Herbarium species comparison

Leaves alternate, trifoliate;

stipules 1-2.5 cm. long, with entire, acuminate tips;

leaflets oblong-elliptic to oblanceolate or broader, 1-3.5 cm. long, finely denticulate the entire length, the teeth needle-like.

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

stipules ovate-lanceolate, their margins lacerate.

Inflorescence of 10- to 50-flowered heads, the heads axillary as well as terminal, 1-2 cm. long, subglobose, without an involucre;

flowers white to purplish, 6-12 mm. long, erect but becoming reflexed as the pedicles elongate to up to 6 mm.;

calyx glabrous, about equal to the corolla, the tube 10-veined, the 5 teeth fringed, 2-3 times as long as the tube, the upper 2 much the longest.

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

Pod 1-seeded.