Dryobalanops lanceolata (PROSEA)

Plant Resources of South-East Asia Introduction

List of species

Dryobalanops lanceolata Burck

Protologue: Ann. Jard. Bot. Buitenzorg 6: 244 (1887).

Dryobalanops kayanensis Becc. (1902).

• Sabah kapur (En).
• Brunei: kapur daram, kapur bukit
• Indonesia: kapur tanduk (Kalimantan)
• Malaysia: kapur paji (Sabah, Sarawak), sesuan (Murut), tepurau (Kayan).

Northern and eastern Borneo.

D. lanceolata is the most valuable kapur timber in Borneo. It is also the main source of Borneo camphor.

• A very large tree, occasionally up to 75 m tall, with a straight bole, branchless for 35 m or more, and having a diameter of up to 145 cm and buttresses of up to 4 m high and 3 m long; bark dull slate-grey or greenish-khaki, slash strongly aromatic.
• Leaves lanceolate, 7-10 cm × 2-3.5 cm, with an up to 10 mm long acumen, glabrous.
• Fruit calyx lobes spatulate, up to 9 cm × 2 cm, bordering a cup up to 5 mm deep and up to 20 mm wide.

D. lanceolata is the tallest known dipterocarp, is common on fertile clayey soils on undulating land, and also grows on basic volcanic soils and calcareous shale, up to 800 m altitude; it is less frequent on ridges than other Dryobalanops spp. The density of the wood varies from 600-1010 kg/m³ at 15% moisture content. See also the table on wood properties.

30, 89, 100, 318, 461, 561, 748.

• Dryobalanops

• M.S.M. Sosef (selection of species)