(L. C. Rich.) Hochr., Ann. Conserv. Jard. Bot. Genève 21:66.1919
Glabrous, dioecious tree, to 12 m tall; trunk to ca 20 cm dbh, the base often with weakly developed stilt-roots; branches slender, often drooping; sap yellow. Petioles 2-2.5 (5) cm long; blades oblong-obovate, acute to bluntly acuminate at apex (rarely rounded), acute at base, (10) 1235 cm long, (4.5) 7.5-13 cm wide; lateral veins in 6-12 pairs. Panicles terminal, short-pedunculate, to 10 cm long, the branches divaricate, often ± flattened; flowers unisexual, many, ca 3 cm broad, arranged in dichasia, the buds globose; sepals 4, the outer pair smaller, strongly concave, reflexed at anthesis; petals 5, elliptic to oblong or obovate, to 13 mm long, white or yellowish; staminate flowers with numerous stamens in a cluster 15 mm wide and ca 5 mm long, free or somewhat connate; filaments fleshy, broader than the tapered anther, the innermost curved outward; pistillode glabrous, conical, with 5 short styles; pistillate flowers fewer, somewhat smaller; ovary 4- or 5-locular; ovules 1(2) per locule, erect; style very short; stigmas 5, cuneate-obovate; staminodia many, ca 2.5 mm long. Fruits obovoid, ca 4 cm long (including stipe), rounded at apex, with 5 persistent styles to 5 mm long, the stigmas discoid, ca 2.5 mm diam; staminodia persistent. Croat 14452, Dare 1116.
Rare, in the forest, known only from the vicinity of the Laboratory Clearing. Throughout its range the species has been collected in flower nearly all year but especially in the late dry or early rainy seasons. On BCI flowers have been seen in late April and in May. Most fruits were mature in the rainy season.
Panama to the Guianas and Brazil. In Panama, known from tropical moist forest on BCI, from tropical wet forest in Colón, from premontane wet or tropical wet forest in Panama (Rio Tuquesa), and from premontane rain forest in Panama (Cerro Jefe).
See Fig. 391.