A woody climber. Leaves 5-9.5 cm long, unipinnate, leaflets usually 5-7, 1.4-6.5 cm long, 1-4 cm wide, oblong, slightly emarginate or obtuse, short stalked, petiolules up to 2 mm long, stipules linear, 4-10 mm long, apex acute. Inflorescence solitary axillary. Bracts 4-5 mm long, bracteoles c. 7 mm long, orbicular. Pedicel 6-9 mm long. Calyx 12-16 mm long, 2 upper teeth joined near the base. Corolla rich blue in colour with greenish veins on the vexillum, vexillum 2.5-5.0 cm long, 3.5 cm broad, Stamens 10, diadelphous, 9+1, dimorphic the vexilIary stamen free, Ovary hairy, style simple, hairy along the inner side. Fruit up to 5-12 cm long, beaked 8-10-seeded, glabrous or sparsely pubescent.