Liana, usually slender; younger branches, petioles, rachises, lower midribs, axes of inflorescences, pedicels, and calyces densely ferruginous-pubescent. Leaves imparipinnate, 10-25 cm long; leaf scars prominent; petioles 2-6 cm long; petiolules to 3 mm long; leaflets 7-11, alternate to opposite, obovate-oblong to elliptic, acute to bluntly acuminate, obtuse to rounded at base, persistently ferruginous-pubescent, especially below, the terminal leaflet 3.5-12 cm long, 1.5-6 cm wide, the others somewhat smaller. Flowers 5-6 mm diam, numerous, slightly aromatic, in upper-axillary panicles 6-15 cm long; pedicels very short; sepals 5, oblong-ovate, acute to blunt, to 1.5 (3) mm long, slightly accrescent in fruit; petals 5, white, oblong, acute to rounded at apex, to 3.5 mm long, spreading to recurved; stamens 10, in alternate cycles of 2 lengths, united briefly at base, the longest to 2.5 mm; ovary and base of styles densely pubescent with stiff white trichomes; ovary of usually 5 free carpels; styles to 2.5 mm long, erect; stigmas simple. Follicles sessile, solitary, densely ferruginous-tomentose, ca 1.5 cm long; seed 1, oblong, black, shiny, ca 1 cm long, the basal aril orange. Croat 7878, 16701.