Tree 10-35 m. Leaves membranous or chartaceous, elliptic to oblong, 8-30 by 4-13.5 cm, base subcordate or rounded to short-cuneate, apex acute-acuminate; Inflorescences predominantly with male flowers, generally behind the leaves, (sub)glabrescent or with sparse greyish hairs 0.1 mm or less, variable in shape, loose or condensed, many-flowered, 6-25 by 3-15 cm, peduncle 0.5-6 cm long, bracts caducous, not seen. Flowers in loose or dense clusters of 3-8, all in about the same stage of development; Fruits (solitary or) 2-6 together in panicles of 15-25 cm long, ellipsoid-oblong, (4.5-)5-7 by 2.5-3.5 cm, apex (narrowly) rounded, base rounded or narrowed for 3-5 mm, glabrous, drying dark brown or blackish, finely granulate;
Asia-Tropical: Malaya (Peninsular Malaysia present, Singapore present); Sumatera (Sumatera present), Peninsular Thailand present
Peninsular Thailand; Malesia: Sumatra, Peninsular Malaysia, Singapore.
The fruits are very variable in the thickness of the pericarp. When more material becomes available, two varieties may be distinguished through this character. Fruiting specimens with thin pericarp may be difficult to distinguish from large-fruited specimens of Endocomia macrocoma subsp. prainii.