Small tree 4-10(-15) m, or shrub; young branchlets slender, glabrous, angular, striate, pallid; bark smooth. Leaves elliptic-oblong to elliptic, rarely ovate-oblong, shortly obtusely acuminate, broadly cuneate at the base to nearly rounded, coriaceous, shining, brownish when dry, entire or slightly to coarsely crenate-serrate, glabrous or sparsely pubescent beneath (very rare more densely pilose underneath), 7-16(-19) by (3-)4-7(-10) cm; nerves 7-8 pairs, prominent beneath, curved, ascending, anastomosing, reticulations distinct, specially beneath; petiole 2-3(-5) mm. Racemes rather stiff, simple or rarely 2-3-branched above the base, it sparsely pubescent, 7-8(-10) (very rarely up to 15) cm. Flowers 5-6-merous, subsessile, white, solitary or in pairs, not rarely in fascicles of 3-5 and then 1 mm peduncled. Bracts ovate, subacute, 1 mm, subpersistent. Calyx-tube elongate, (4-)5-6 mm, ± densely pilose to glabrescent, red-brown when dry, manifestly sulcate. Sepals coriaceous, oblong-ovate, subacute, c. 2.5 mm, erect. Petals white, similar to the sepals, but slightly longer and more densely greyish-appressed-tomentose on both sides, somewhat stellate-patent. Glands yellow. Stamens in fascicles of 3-4, exceeding the petals a little in length; filaments glabrous. Ovary elongate-conical, tomentose. Styles 4-5(-7), cylindric, erect, exserted.
Undisturbed mixed dipterocarp, swamp, coastal and sub-montane forests at elevations up to 1,400 metres. Usually on alluvial sites and along rivers. In secondary forests usually present as a pre-disturbance remnant tree.
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Humid forest or in brushwood vegetation on level or hilly land, usually along river-sides or in humid soil periodically inundated during the wet monsoon, also on sandy loam, up to 150 m, fl. Jan.-Dec.
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