Shrubs or perennial herbs, up to 5 m tall. Stems erect or scandent, angular, pubescent with brownish hairs. Petioles 10-20 cm; leaflets broadly ovate-elliptic, 15-45 × 12-35 cm, sericeous with brownish hairs abaxially, appressed pubescent adaxially, lateral veins 10-12 pairs, reticulate veins distinct abaxially, base rounded or truncate, apex acute. Racemes or panicles many flowered. Calyx 6-8 mm, pubescent with brownish hairs. Corolla orange-red; standard broadly elliptic, recurved, ca. 1.5 cm; wings narrowly ovate, falcate, ca. 1.3 cm; keel ovate, ca. 1.7 cm. Legumes (4.5-)6-10 × 2-3 cm, tomentose with brownish hairs.
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