Shrub or tree 0.5-30 m. Leaves strongly coriaceous, obovate or sometimes oblong-obovate or narrowly so, to 4-22 x 2-11.5 cm, apex rounded or retuse or sometimes obtuse, base attenuate-cuneate, glabrous except sometimes sparsely pubescent on midvein below; domatia absent; venation brochidodromous, midvein stout, flattened and scarcely prominent, secondary veins 6-12 pairs, moderately spaced to distant, arising at widely acute to almost right angles, slightly curved to recurved, often forked and joining a well-marked intramarginal vein, scarcely or not prominent, intersecondary veins often present, often almost as evident as secondaries; tertiary veins inconspicuous, randomly reticulate; higher order veins indistinct; areolation imperfect or incomplete, not prominent; petiole 0.3-1.5 cm long, glabrous to sparsely pubescent, eglandular or biglandular at junction with leaf. Inflorescence 7-15(-18) cm long, simple, andromonoecious, sometimes bisexual and sometimes male flowers predominating, the males dispersed among the bisexuals; peduncle 4-7.5 cm long, glabrous to pubescent; rhachis 3-10(-12) cm long, glabrous to pubescent. Flowers (4- to) 5-merous, bisexual ones 5-10.5 x 3.5-5.5 mm, male ones 3-5 x 3.5-5.5 mm; lower hypanthium 2-6.5 mm long in bisexual flowers, pedicel-like and 1-3 mm long in male flowers, glabrous to densely appressed-pubescent,upper hypanthium campanulate to cupuliform, 1.5-3 mm, glabrous to appressed-pubescent outside, always densely pubescent inside; calyx lobes suberect to recurved, 0.8-1.8 mm long, glabrous to appressed-pubescent; stamens 3-6.5 mm long; disk villous to densely so; style 3.5-9.5 mm long, glabrous or very sparsely pubescent near base. Infructescence with numerous fruits, disposed along whole length of rhachis; fruit glabrous to sparsely pubescent, (0.6-)0.8-1.2(-1.5) x 0.5-1(-1.2) cm, actinomorphic, broadly elliptic in side view, apex and base rounded to truncate, wings (4-)5, flexible, equal, 0.2-0.6 cm wide, rounded laterally, body 0.2-0.35 cm wide.
Guianas present, Guyana present, Headwaters of the Orinoco, Essequibo and Amazon rivers in Venezuela present, Southern America
Headwaters of the Orinoco, Essequibo and Amazon rivers in Venezuela, Guyana and Brazil; 13 specimens from the Guianas (GU: 13).