Shorea sumatrana (PROSEA)

Plant Resources of South-East Asia Introduction

List of species

Shorea sumatrana (v. Slooten ex Thorenaar) Sym. ex Desch

Protologue: Mal. For. 3: 195 (1934).

• Isoptera sumatrana v. Slooten ex Thorenaar (1926),
• Isoptera borneensis King non R. Scheffer ex Burck.

• Indonesia: kedawang, sengkawang (Sumatra)
• Malaysia: balau sengkawan air, sengkawang, tengkawang batu (Peninsular)
• Thailand: palosale, teng-dong (Pattani).

South-eastern peninsular Thailand, Peninsular Malaysia and Sumatra.

The timber is used as balau. The fruits are collected as illipe nuts but not on a commercial scale.

• A medium-sized to large tree with bole up to 115 cm in diameter and prominent buttresses.
• Leaves elliptical-oblong, about 16.5 cm × 7.5 cm, with 10 pairs of secondary veins sharply prominent beneath.
• Petals narrow, stamens 25.
• Fruit calyx lobes unequal, developed into woody parts forming a spreading rosette around the nut.

S. sumatrana is closely related to S. seminis and typically occurs along banks of slow-flowing rivers. The density of the wood is 630-1120 kg/m³ at 15% moisture content.

258, 628, 677, 748.

• Shorea (balau)

• M.S.M. Sosef (selection of species)