Climbing vines. Stems with sparse reddish brown short hairs. Leaves ca. 35 cm; petiole ca. 15 cm with sparse brown short spreading hairs; stipels robust, 4-6 mm; leaflets thinly leathery or papery, glabrous except for occasional hairs on veins abaxially, lateral veins 5 or 6 pairs, strongly curved; terminal leaflet elliptic or elliptic-obovate, ca. 14 × 8.5 cm, base rounded, apex with abrupt acumen ca. 1 cm; lateral leaflets ca. 13 cm, width ratio of abaxial to adaxial halves ca. 1.5:1. Inflorescence ca. 10 cm, with 4 or 5 nodes spaced throughout length; bracts caducous, not seen; pedicels ca. 1 cm, with abundant golden spreading short hairs. Calyx with dark brown short spreading hairs and red-brown caducous fine long bristles; tube ca. 1 × 1.6-1.8 cm; lobes narrowly triangular, lowest ca. 12 mm and laterals ca. 7 mm, upper lip sometimes longer than laterals. Corolla deep purple (drying brownish); standard ca. 3.2 cm; wings 5-5.5 × ca. 2 cm, ca. equaling keel, inner surface with abundant long fine adpressed pale hairs in basal half. Ovules ca. 3. Mature fruit unknown.
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