Horsfieldia borneensis W.J.deWilde, Gard. Bull. Sing. 39 (1986)
Latin for 'from Borneo'.

Description
Mid-canopy tree up to 37 m tall and 65 cm dbh. Stem with red sap. Stipules absent. Leaves alternate, simple, penni-veined, glabrous to hairy. Flowers ca. 2 mm diameter, yellow-pink-brownish, placed in panicles. Fruits ca. 46 mm long, green-yellow-brown, fleshy, glabrous, dehiscent capsules. Seeds with entire orange aril.

Ecology
In undisturbed mixed dipterocarp and swamp forests up to 400 m altitude. Mostly on ridges, but also on alluvial sites. On sandy to clay soils. In secondary forests usually present as a pre-disturbance remnant.

Uses
The fruits are edible.

Distribution
Borneo (Sarawak, Sabah, Central- and East-Kalimantan).

Local names in Borneo
Buah kalop, Dara-dara, Darah-darah, Koompang, Kumpang, Kumpang balau, Lala hutan.