Description from Flora of China
Mucuna montana Diels, Notes Roy. Bot. Gard. Edinburgh 5: 247. 1912.
Herbs, robust, twining and climbing. Stems densely villous with grayish white hairs. Terminal leaflet broadly ovate-rhomboid, symmetric, lateral ones slightly oblique, 5.5-8 × 4.5-8 cm, densely silky pubescent on both surfaces, base rounded or broadly cuneate, apex broadly acute, mucronate. Calyx densely adpressed pubescent outside; upper 2 teeth connate to an emarginate lip, lowest tooth lanceolate, ca. 7 mm. Corolla pink or rose-red; standard broadly ovate, ca. 18 mm, shortly clawed; wings slightly longer than standard, base with auricle as long as claw; keel longest, linear, coiled inward. Legumes narrowly oblong, compressed, hirsute. Fl. Jul.
● Dry rocky scrub on mountain slopes; ca. 3000 m. Yunnan (Lijiang).