Vatica javanica Sloot, Bull. Jard. Bot. Btzg. III 16 (1940)

Description
Upper canopy tree up to 46 m tall and 99 cm dbh. Stem with resin. Stipules dropped early. Leaves alternate, simple, penni-veined, petiole and lower surface covered with scales, feeling like sand paper. Flower ca. 15 mm diameter, white, placed in panicles. Fruits ca. 5 mm long, yellow-brown, with two ca. 60 mm long wings, wind dispersed.

Ecology
In undisturbed mixed dipterocarp forests up to 100 m altitude. Mostly on hillsides and ridges with sandy soils. In secondary forests usually present as a pre-disturbance remnant tree.

Uses
The timber is used.

Distribution
Java, Borneo (East-Kalimantan where it is mostly collected in the Sungai Wain area).

Local names
Borneo: Keruwing, Resak.