Mallotus macrostachyus (Miq.) Mull.Arg., in DC. Prodr. 15, 2 (1866)
Latin for 'long spikes', referring to the inflorescences.

Synonyms
Mallotus insignis Mull.Arg., Rottlera macrostachya Miq.

Description
Understorey tree up to 15 m tall and 25 cm dbh. Stipules ca. 3 mm long. Leaves alternate, simple, tripli-veined, densely hairy below, hairy domatia in secondary vein axils, with two basal nectary glands at upper surface, leaf margin at petiole insertion usually curved upwards. Flowers ca. 4 mm diameter, green-yellowish, placed in long panicles. Fruits ca. 13 mm diameter, yellow-brownish, roundish, dehiscent, densely hairy capsules, seeds with black aril.

Ecology
Mostly in disturbed sites in mixed dipterocarp and keranga forests up to 800 m altitude. Common along roadsides, forest edges, riversides, large gaps, hillsides and ridges. On sandy to clay soils.

Uses
Firewood. The leaves are used as an antidote against snake poison.

Distribution
Thailand, Peninsular Malaysia, Sumatra, Borneo (throughout the island).

Local names in Borneo
Balik angin, Entupak, Kayu balik angin, Kelempah pinggai, Kelipak pinggai.