Trigonopleura malayana Hook.f., Fl. Brit. India 5 (1887)

Latin for 'from Malaysia'.

Peniculifera penangensis Ridl.
Trigonopleura borneensis Merr.

Mid-canopy tree up to 34 m tall and 62 cm dbh. Stipules ca. 6 mm long. Leaves alternate, simple, penni-veined, conspicuously looping secondary veins, lower surface hairy. Flowers ca. 8 mm diameter, greenish-white, placed in axillary bundles. Fruits ca. 11 mm diameter, greenish-white-yellow, dehiscent capsules. Seeds with white-cream aril.

In undisturbed mixed dipterocarp and sub-montane forests up to 1600 m altitude. Along rivers, but also common on hillsides and ridges. On sandy to clay soils. In secondary forests usually present as a pre-disturbance remnant tree.

Young leaves are edible.

Peninsular Malaysia, Sumatra, Borneo (Sarawak, Brunei, Sabah, West-, Central- and East-Kalimantan), Celebes.

Local names
Borneo: Akil, Enkunit, Gambir hutan, Gampil, Gomi balua, Kadoroi, Kayu sedi, Kayu masam, Kelali, Kodoloi, Kratuok, Sedi, Selait, Sidek kayu.