Liana or scandent shrub, to 3 m or more long; stems bearing sparse T-shaped trichomes when young, glabrate in age. Petioles 8-15 mm long, sparsely pubescent, eglandular; blades ovate-elliptic, acuminate, obtuse to rounded at base, 7-16 cm long, 4.5-9 cm wide, glabrous above, glabrous below or moderately to densely pubescent on veins, especially midrib, the trichomes T-shaped, the glands 2, sessile, at base beside midrib below. Panicles axillary, divaricately branched, bracteolate at nodes; inflorescence branches, pedicels, and sepals short-pubescent; branches ending in a corymb of 4-12 flowers; peduncles ca 2 mm long, thicker than pedicel, minutely bracteolate at apex; pedicels pedunculate, 8-18 mm long; calyx bearing usually 8 large, green glands; sepals 5, ovate-oblong, 1.5-2 mm long, glabrous to sparsely pubescent; petals pink, clawed, +/- equal, 4-4.5 mm long, keeled, entire; stamens 10, unequal (2 much larger than the others), ca 2 mm long; anthers oblong, introrse, yellowish, the connective conspicuously swollen on the outer side; ovary densely whitish-hirsute; styles 3, exceeding stamens, with a narrow lateral arm at apex. Schizocarps of 3 samaras; seminiferous area moderately appressed-pubescent; dorsal wings reduced, the lateral wings thin, +/- semicircular, ca 3 cm long and 1.5 cm wide, often not divided at apex. Croat 11681. Rare; growing in the canopy and along the shore. Flowers sporadically, mostly in the rainy season (March to October), with the fruits maturing from April to October. Panama, Colombia, and Venezuela; Trinidad. In Panama, known from tropical moist forest on BCI and in adjacent areas of the Canal Zone and Panama.

Descripción: Plantas trepadoras o lianas con tronco cilíndrico y cubierto de lenticelas pequeñas de color marrón. Ramitas terminales cilíndricas con pelos esparcidos y en forma de ‘T’. Hojas simples y opuestas, de 7-16 x 4-9 cm, ovadas o elípticas, con ápice acuminado, bordes enteros y base redondeada. Pecíolo acanalado. Glándulas ausentes. Estípulas deciduas o persistentes. Flores rosadas. Sépalos con dos glándulas en la superficie exterior de la base. Pétalos rosados. Frutos en sámaras, de 1.5-3 cm de largo.

Especies Parecidas: A menudo se confunde con LK maschi Adelphia hiraea LK2 , pero en A. hiraea el pecíolo presenta un par de glándulas en el extremo apical y las flores son amarillas.