Trifolium leucanthum

Erect or ascending annual herb; stems (5–)15–30 cm long, branching, villous. Leaves palmately trifoliolate, long-petiolate; leaflets oblong to obovate, 10–25 mm long, 7–9 mm wide, appressed-hairy on both surfaces, apex notched, upper margins minutely denticulate; stipules herbaceous, connate and somewhat membranous in lower half. Inflorescence many-flowered, terminal, globular or subglobular, 10–15(–20) mm long, 10–15 mm wide, pedunclulate; flowers sessile. Calyx 8–10 mm long, tube obconic, 10-nerved, densely covered with spreading to appressed hairs, teeth subequal, as long or longer than tube, acute, spreading stellately in fruit; corolla 6–9 mm long, cream to pink, keel tipped purple; standard oblong, slightly longer than wings and keel. Pod ovoid, membranous to coriaceous, included in calyx tube; seed 1, globular to obovoid, 1.2–2 mm long. Flowers Nov. (1 record).