Erect to decumbent annual, 0.15–1.5 m tall, often somewhat woody at the base; stems pubescent to pilose. Leaflets oblong to linear, 1–12.5 x 0.2–1.6 cm, slightly reticulate on both sides, puberulous and with longer hairs beneath; margins ciliate. Racemes terminal and leaf-opposed, usually elongate and ± lax. Calyx 5–7 mm long, much longer than the first article of the pod, ciliate with white hairs or glabrous; lobes lanceolate, not or slightly overlapping. Standard 5–6 mm long, pink to red. Pod up to 1.5 cm long, much constricted between the 4–7 articles; articles 1.5–2 x 2–3 mm, with strong close transverse ridges, puberulous.
