Shrub 1.2–3 m tall. Young stems dark purplish-brown, often glaucous, glabrous or with dense to scattered tubercular-based hairs on some or all internodes, the older ones appearing jointed at the nodes due to the scars formed by the deciduous stipules, glabrous. Leaves rather fleshy, often glaucous, (8)14–22-foliolate; leaflets 1.2–3 × 0.6–2 cm, elliptic, oblong-elliptic or elliptic-ovate, rounded but mucronulate at the apex, obliquely rounded to cordate at the base, entire or sometimes ciliolate when young, glabrous; venation reticulate beneath; petiole and rhachis together (3)7–12 cm long, glabrous or rarely densely covered with tubercular-based hairs; petiolules distinct, c. 1 mm long; stipules large and conspicuous, 1.5–3.7 × 1.3–3 cm, ovate-elliptic, glabrous, reticulately veined, eventually deciduous. Inflorescences axillary, many-flowered, often branched, 7–15 cm long, the rhachis densely covered with tubercular-based hairs or glabrescent; peduncle 1.5–7 cm long; pedicels 3–7 mm long, all with similar hairs; bracts 7–13 × (3)4–8 mm, ovate or lanceolate, glabrous, deciduous; bracteoles 4–6 × 1.5–2.5 mm, lanceolate, glabrous, deciduous. Calyx glabrous, 2-lipped; lips 8–12 × (3.5)4–5.5 mm, oblong, one entire and the other obscurely 3-fid, practically entire. Standard yellow or orange-yellow with purple veins and a reddish basal patch inside, 11–13 × 7–8 mm, elliptic; wings and keel yellow or orange, the former free, the latter purplish at the tip. Fruit of 3 articles joined by very narrow necks, each article semicircular, 7–8 × 5 mm, compressed, glabrous or very sparsely ciliate, smooth. Seeds not seen.