Vatica oblongifolia (PROSEA)

Plant Resources of South-East Asia Introduction

List of species

Vatica oblongifolia Hook.f.

Protologue: Trans. Linn. Soc. 23: 160 (1862).

Vernacular names

• Brunei: resak mambangan, resak daun panjang.

Distribution

Borneo.

Uses

The timber is used as resak.

Observations

• A medium-sized to fairly large tree, up to 35 m tall, with straight, cylindrical bole up to 50 cm in diameter and small buttresses.
• Leaves oblong, broadly oblong, obovate, narrowly obovate or narrowly elliptical, (6.5-)10-31 cm × (2.5-)4-10.5 cm, with 10-27 pairs of secondary veins, glabrescent, petiole 15-50 mm long.
• Inflorescences compressed, up to 8 cm long.
• Flower buds to 15 mm long.
• Nut globose, up to 20 mm long, with 5 equal usually reflexed fruit calyx lobes.

V. oblongifolia is a variable species, especially in the shape and size of petioles and leaves, in the number of secondary veins and in the size of the fruit calyx lobes. It can be recognized by its depressed twigs and short, dense, wine-red indumentum of young parts. Five subspecies are distinguished. It is locally abundant on a variety of soils. The density of the wood is reported to vary from 700-1065 kg/m³ at 15% moisture content.

Selected sources

30, 89, 100, 461, 748.

Main genus page

• Vatica

Authors

• R.H.M.J. Lemmens (selection of species)