Dryobalanops rappa (PROSEA)

Plant Resources of South-East Asia Introduction

List of species

Dryobalanops rappa Becc.

Protologue: Nelle for. Born.: 572 (1902).

Vernacular names

• Swamp kapur (En).
• Brunei: kapur paya
• Indonesia: kapur kayatan (West Kalimantan)
• Malaysia: kapur paya (Sabah, Sarawak), kapur ranggi, kapur rappa (Sarawak).

Distribution

Northern and western Borneo.

Uses

The timber is used as kapur, although it is often considered to be of inferior quality. It is more liable to splitting than the timber of other species, and logs often show severe heart-rot. The bark is used locally for walls.

Observations

• A large to very large tree, up to 55 m tall, with a straight bole up to 100(-160) cm in diameter and large buttresses up to 5 m high and 3 m wide; bark dark rufous brown, slash aromatic.
• Leaves ovate-lanceolate, 6-11 cm × 2.5-4 cm, with an up to 10 mm long acumen, caducous or persistent rufous tomentose beneath.
• Fruit calyx lobes oblong to spatulate, up to 5 cm × 0.6 cm, bordering an up to 3 mm deep and 5-8 mm wide cup.

D. rappa is locally dominant in peat-swamp forest and kerangas on sandy hills, up to 650 m altitude. The density of the wood is 660-960 kg/m³ at 15% moisture content.

Selected sources

30, 89, 100, 159, 461, 561, 740, 748.

Main genus page

• Dryobalanops

Authors

• M.S.M. Sosef (selection of species)