L.f., Suppl. 317. 1781
Liana or climbing shrub, to 13 m tall, forming dense masses along shore; stems minutely fissured and bearing prominent round lenticels. Leaves compound; stipules caducous; petioles 1-2 cm long; rachis puberulent when young, 2-6 cm long, often zigzag with the leaflets alternate; leaflets (1) 2-5, ovate to elliptic, abruptly long-acuminate (the acumen to 1.8 cm long), rounded or obtuse at base, 5.5-12 cm long, 3-6 cm wide, glabrous and shiny above except for pubescent midrib, glabrous and pale below, the reticulate veins prominulous but not raised. Racemes axillary; rachises to ca 2 cm long, ± strigose; pedicels slender, 2-3 mm long; calyx inflated, campanulate, to 2 mm long and wide, ± irregularly lobed ca one-third its length, the teeth acute and subequal; petals 5-7 mm long, white, clawed ca half their length, the wings truncate to subcordate and oblique at base; stamens diadelphous, 4-5 mm long, the column split into 2 fascicles; ovary stipitate, the stipe slender, about as long as ovary; style bent sharply forward. Legumes ± orbicular, flattened, becoming bowl-shaped in age, 3.5-4.5 cm long, 2-3 mm thick, glabrous, borne on stipes 5-7 mm long, one margin sometimes raised, the surface often with raised reticulations; seeds brown, discoid, ca 1.5 cm diam, the margin thin. Croat 13960, Foster 1349.
Distribution unknown, but locally abundant along the northern shore of Gigante Bay. Flowers in the late rainy season and early dry season, especially in early dry season. The fruits mature in the late dry season and early rainy season (to July).
Mexico along the Atlantic slope of Central America to northern South America; West Indies. In Panama, known from tropical moist forest in the Canal Zone and probably in Bocas del Toro; known also from premontane and tropical wet forests in Colón.