Erect or spreading procumbent perennial herb, woody at the base, 10–60 cm. tall. Stems densely to sparsely pubescent or puberulous, at length ± glabrous. Leaves uniibliolate; leaflet ovate, oblong, oblong-elliptic or lanceolate, 0.5–6.5 cm. long, 0.3–2.6 cm. wide, acute to emarginate and mucronulate at the apex, subcordate at the base, finely puberulous and with longer hairs, or almost glabrous above, ciliate; reticulation prominent on both surfaces; petiole 0.4–1.5 cm. long; petiolule 1–2 mm. long; stipules lanceolate, 0.7–1.7(–2.4) cm. long. Inflorescences terminal and leaf-opposed, 2–13 cm. long, mostly dense, the internodes mostly shorter than the flowers, glabrous or usually densely pubescent; rhachis 2–13 cm. long; peduncle 0–5 cm. long; pedicels 0.5–2 mm. long; primary bracts ovate-lanceolate to lanceolate, 4–8 mm. long, 1.5–2.5 mm. wide, acuminate, ± glabrous, deciduous; secondary bracts similar, 2.5–3.5 mm. long. Calyx puberulous or pubescent; tube 1.5–2.5 mm. long; teeth narrowly triangular, 3–4 mm. long, 0.5–1 mm. wide, acuminate, not imbricate. Standard orange, pinkish-buff or purple, often paler than other petals, 4–6 mm. long, 3–4 mm. wide; wings mauve; keel magenta, mauve or green with purple tip. Pods 1.2–2.5 cm. long, well exserted from the calyx, not constricted between the articles; articles 4–7, subcylindrical, 2.5–3 mm. long, 1.5–3 mm. wide, with raised reticulate ridges, puberulous with uncinulate hairs. Seeds yellowish, speckled brown or entirely yellow-brown, ellipsoidal, slightly compressed, longest dimension 1.7 mm., shorter dimension 1.5 mm., 1 mm. thick.
