Annual herb, 0.2-0.5 m high. Flowers papilionaceous; pedicels cylindrical, 2.5-3.0 mm long; wings 8 x 5 mm, elliptic, crest slightly fimbriate, not reaching margin of carina, 1.50-1.75 mm long, upper petal asymmetrically emarginate at apex. Flowering time Nov.-Mar. Seed pubescent, silky hairs, 4 x 1.50-1.75 mm long.
Perennial herb, up to 1 m high; not spinescent. Stems erect, slender, virgate, green; glabrous. Leaves distant, sessile; blade linear, 12-18 mm x 1-2 mm, apex acute. Flowers: in lax, many-flowered, terminal racemes; wings oblong, ± 7-8 x 5 mm, apex rounded, purplish pink; petals dark purplish pink; Dec.-Mar.