Differing as follows: Leaves 8.5-18 by 3.5-8.5 cm, elliptic to obovate, +-coriaceous; base cuneate, obtuse or cordate; apex shortly acuminate; nerves (10-)12-14(-17) pairs, slender but distinctly elevated on both surfaces. Stamens 37-57. Fruit pedicel to 4 by 2 mm, prominent; 2 longer calyx lobes to 7 by 0.6 cm; 2 shorter lobes to 7 by 0.6 cm.
Common, often gregarious, in lowland forest on undulating land and hills to 600 m, especially on sedimentary rocks and along ridges; regenerates profusely in secondary forest.