Tree 3-20(-30) m, without buttresses. Leaves chartaceous to subcoriaceous, oblanceolate or narrowly elliptic to narrowly obovate or narrowly elliptic-oblong, 3-35 x 1.5-14 cm, apex long- to short-acuminate to apiculate or rarely rounded, base narrowly attenuate-cuneate, glabrous except often puberulous on midvein and secondary veins especially below; domatia absent or shallow except for dense hair-tufts; venation eucamptodromous or eucamptodromous-brochidodromous, midvein moderate to strong, prominent, secondary veins 6-14 pairs, moderately spaced to distant, arising at moderately acute angles, curved, prominent, intersecondary veins usually absent; tertiary veins regularly and often closely percurrent, higher order veins distinct; areolation imperfect, slightly prominent; petiole 0.6-3.5 cm long, pubescent to sparsely so, biglandular (often conspicuously so). Inflorescence 3-13 cm long, spicate; peduncle 0.6-3.2 cm, puberulous to densely so; rhachis 2-10 cm, densely puberulous. Flowers 2.5-3.5 mm long; lower hypanthium 1.5-2 mm long, densely pubescent on ovary-bearing part, with glabrous to sparsely pubescent neck ca. half total length; upper hypanthium 1-1.5 x 2.5-4 mm, glabrous or nearly so. Fruit densely fulvous-pubescent, 1-3.3 x 0.6-1.3 cm, elliptic to oblong or narrowly so in side view, more or less terete, apex rounded to subacute or apiculate, base rounded to very shortly pseudostipitate.
French Guiana present, Guianas present, Pacific coast of Colombia present, Southern America: Brazil West-Central (Mato Grosso present); Ecuador (Ecuador present); Peru (Peru present); Venezuela (Venezuela present), upper Orinoco R present, whole Amazon river-basin present
From Pacific coast of Colombia, Venezuela (upper Orinoco R.), French Guiana, Ecuador, Peru, Brazil (whole Amazon river-basin) south to Mato Grosso at ca. 13° S; 3 specimens from the Guianas (FG: 3).