Vine; stems, peduncles, calyces, and underside of leaves moderately brown-pilose. Leaves trifoliolate; stipules ovate, acute, ca 4 mm long; petioles 1.5-4.5 cm long; rachis of terminal leaflet subtending the stipels 1-2 cm long; petiolules pulvinate and articulate; leaflets lance-elliptic to oblong, rounded at base, 2.5-7.5 cm long, 1.5-4 cm wide, glabrous above, villous and paler below, the terminal leaflet rounded-acute to retuse at apex, often bearing short apiculum or tuft of trichomes. Panicles axillary, bearing few flowers; peduncles to 15 cm long; rachises 2-3 cm long; calyx 2-3 cm long, acutely lobed ca one-third its length, the lobes subequal; standard white, drying yellow, tinged with violet along median line below apex, to 4 cm long, enclosing other petals and surpassing them by ca 2 cm; keel straight; stamens ca 2.5 cm long, arcuate. Legumes stipitate, somewhat flattened, linear-oblong, 3-5.5 cm long, with 2 ribs ca 4 mm below the upper edge, glabrous; seeds to ca 10 globose, ca 3 mm diam. Woodworth & Vestal 693. This species occurs sporadically in the Canal Zone, but has not been seen or collected in recent years on the island. The plant could be expected to occur in the Lighthouse Clearing. Flowers at least from September to March. The fruits develop quickly and are usually present at the same time as the flowers.