Dipterocarpus humeratus (PROSEA)

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Plant Resources of South-East Asia
List of species

Dipterocarpus humeratus v. Slooten

Protologue: Bull. Jard. Bot. Buitenzorg, sér. 3, 8: 308, f. 4 (1927).


  • Dipterocarpus gibbosus v. Slooten (1927),
  • Dipterocarpus ursinus v. Slooten (1961).

Vernacular names

  • Brunei: keruing latek bukit, keruing latek (Malay), ran (Iban)
  • Indonesia: jelatong bulan, lagan (Sumatra)
  • Malaysia: keruing kerukup (Sabah), keruing latek bukit (Sarawak).


Northern and eastern Sumatra and Borneo.


The timber is used as keruing.


  • A large tree of up to 50 m tall, bole tall, straight, cylindrical, up to 110 cm in diameter, buttresses up to 2 m tall, up to 8 cm thick, bark surface pink-brown, smooth, outer bark thin, inner bark dull pinkish-brown, sapwood pale ochre; buds narrowly conical, fulvous tomentose.
  • Leaves broadly ovate, 20-38 cm × 12-23 cm, base obtuse, apex obtuse to shortly acuminate, secondary veins about 20 pairs, beneath persistently shortly pubescent, petiole 4-6 cm long, stipules narrowly lanceolate, obtuse, outside long fulvous tomentose.
  • Stamens about 40.
  • Fruit calyx tube globose, glabrous, with 5 obtuse tubercles, 2 longer fruit calyx lobes up to 18 cm × 5 cm, 3 shorter ones up to 1.5 cm × 1.5 cm.

D. humeratus occurs scattered or semi-gregariously on undulating land and clay ridges below 700 m altitude. The density of the wood is 730-800 kg/m3at 15% moisture content.

Selected sources

30, 31, 258, 469, 476, 737, 746, 748.

Main genus page


  • T. Smitinand (selection of species),
  • C. Phengklai (selection of species),
  • L.E. Groen (selection of species)