Vine, sometimes becoming large, yellowish pubescent, stems slender, softly villous with stout hairs to 2 mm long, these soon deciduous leaving a dense soft pubescence of short hairs. Leaves pinnate trifoliolate, leaflets ovate or rhomboi-dal, mostly 6-9 cm long, 4-6 cm wide, the lateral pair oblique, obtuse at each end, mucronate, mostly 3 veined at the base, slightly discolorous, appressed fine pubescent on both sides but more so beneath; petiolules 2-4 mm long; rachis 1-4 cm long; petiole mostly somewhat shorter than the terminal leaflet; stipels subulate, pilose, ca. 4 mm long; stipules caducous. Racemes elongate, sturdy but flexuous; peduncle mostly 1-5 cm long, puberulent; rachis to 20(-40) cm long, nodose, the nodes sometimes elaborated into short cymes; pedicels tomentose, ca. 2 mm long, inserted on the nodes, 2-5 at a time; bracts 1-3 mm long, pilose. Flowers bluish, the calyx tubular campanulate, ca. 4 mm long, the lobes subulate acuminate, pilose, about as long as the tube; standard glabrous, ca. 1 cm long, the wings narrowly spatulate oblong, about as long as the standard, the keel shorter; anthers oblong ovoid, 0.6 mm long; style ascending, pubescent to the tip. Legume linear oblong, 4-6 cm long, ca. 8 mm wide, impressed between the seeds laterally and slightly marginally, the beak small, curved, softly fine tomen-tose on the sides with longer hairs along the margins; seeds 4-8, squarish discoid, 4-5 mm across, shiny brown, the hilum oval, centered on one edge.
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