Annual or biennial, erect, up to 60 cm or more tall, pubescent-glandular. Leaves trisect, 30-40 x 30-75 mm, 3-5-angled; segments pinnatipartite, lobulate; lobules obtuse, mucronate, sparsely pilose; petiole 1.8-44 cm long, pubescent villous; stipules 2-3 mm long, broadly ovate, subacuminate. Peduncles 2-flowered, glandular or villous. Sepals 5-7 mm long, ovate or oblong-ovate, villous-glandular, awn c. 2 mm long. Petals c. twice as long as sepals, 3-nerved, reddish-pink, limb obovate, tapering towards the base. Beak 8-11 mm long, glabrous. Mericarps glabrous. Seed 2 mm long, elliptic-oblong, reddish-brown, umbo slightly projecting, black.