Durio acutifolius (Mast.) Kosterm., Trop. Natuur. 33 (1953)

Description
Sub-canopy tree up to 29 m tall and 49 cm dbh. Stipules present, but falling off early. Leaves alternate, simple, penni-veined, silvery-golden below. Flowers ca. 15 mm in diameter, with 2-lobed epicalyx, white to pale yellow, usually placed solitary behind the leavy twigs. Fruits ca. 35 mm long, bright red, dehiscent, with short spines, seeds with small red aril which covers only a small part of the black seeds.

Ecology
In undisturbed forests up to 900 m altitude. Usually in mixed dipterocarp forest on hillsides and ridges, but also found in keranga forest. Usually on sandy soils. In secondary forests usually present as pre-disturbance remnant trees.

Uses
The timber is locally used. The aril is edible, but very small.

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

Local names
Borneo: Durian, Durian antu, Durian burong, Durian enggang, Durian loiang, Durian lahung, Lai hengang, Lai kayo, Lai koko, Mehawan, Tupaloh, Tuwola pumpulu.