Mucuna coriacea Baker

Climbing or trailing herb or liane 3–4·5 m. long.. Stems densely to sparsely covered with adpressed or spreading ferruginous hairs.. Leaflets usually rather thick, elliptic or obliquely ovate, 3·5–9(–11) cm. long, 3–7·5 cm. wide, rounded or slightly emarginate and mucronulate at the apex, rounded or slightly subcordate at the base, velvety with adpressed whitish hairs or adpressed pubescent on both surfaces; petiole 1·5–7 cm. long; rhachis 0·4–2 cm. long; petiolules 4–5 mm. long.. Inflorescences 2–many-flowered; rhachis 0·3–14 cm. long; peduncle 1·3–10 cm. long; flowers 2–3 per node, on pedicels 4–10 mm. long; bracts and bracteoles deciduous, 7–10 mm. long, 1–3 mm. wide, acute.. Calyx covered with adpressed bristly golden hairs or with a finer ferruginous pubescence; tube 5–7·5(–9) mm. long; lobes narrowly triangular, 4–9(–12) mm. long, the upper lip acute.. Standard pale maroon to purple or black, rounded-ovate, 2·5–3·5 cm. long and wide, glabrous; wings deep maroon, 3·5–4 cm. long, with a zone of golden hairs on the outside; keel deep maroon, sometimes whitish below, 3–4·8 cm. long, the beak horny, blackish or brownish.. Pods oblong, curved, 5–7(–8) cm. long, 1–1·5 cm. wide, densely covered with brownish bristles.. Seeds pinkish-brown or buff with darker brown mottling, elliptic-oblong, compressed, shiny, longest dimension 8–9 mm., shorter dimension 7·5 mm., thickness 3·5 mm.; hilum short with black rim-aril and produced into a scale-like appendage.