Pentace triptera Mast., In hook.f., Fl. Brit. Ind. 1 (1874)

Latin for 'three wings', referring to the fruits.

Upper canopy tree up to 43 m tall and 87 cm dbh. Stipules small. Leaves alternate, simple, tripli-veined, glabrous, whitish below. Flowers ca. 6 mm diameter, green-whitish, placed in panicles. Fruits ca. 34 mm diameter, green, winged nuts.

In undisturbed mixed dipterocarp forests up to 400 m altitude. On alluvial sites and hillsides with sandy to clay soils. In secondary forests usually present as a pre-disturbance remnant.

The wood is used for construction purposes.

Thailand, Peninsular Malaysia, Sumatra, Borneo (Sarawak, Sabah, West- and East-Kalimantan).

Local names
Borneo: Damar pipit.