Hopea dyeri (PROSEA)

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Plant Resources of South-East Asia
List of species

Hopea dyeri Heim

Protologue: Bull. Mens. Soc. Linn. Paris 2: 972 (1891).


  • Hopea intermedia King (1893) p.p.,
  • Hopea micrantha Burck (1887) non Hook.f. p.p.,
  • Hopea pierrei Brandis (1895) non Hance.

Vernacular names

  • Indonesia: bangkirai tanduk (South Kalimantan), omang terubuk, emang besi (West Kalimantan)
  • Malaysia: merawan palit (Peninsular), selangan kechil (Sabah), selangan palit (Sarawak).


Peninsular Malaysia and Borneo.


The timber is used as merawan. The tree is also a source of dammar.


  • A medium-sized to fairly large tree of up to 35 m tall, bole straight, tapering, with a diameter of up to 60 cm and thin, low buttresses and stilt roots, bark surface flaky with a red layer beneath, inner bark homogeneous pale pink-brown to yellowish-brown, sapwood pale yellow, heartwood brown; younger parts grey-brown pubescent.
  • Leaves ovate-lanceolate, 2.5-7 cm × 1.2-2.5 cm, somewhat leathery, base cuneate, subequal, acumen narrow, up to 1.5 cm long, margin frequently slightly revolute, frequently lepidote beneath, venation dryobalanoid, midrib raised on both surfaces, secondary veins 8-12 pairs, slender, slightly raised, with many distinct smaller veins.
  • Stamens 15, in 3 whorls, ovary and stylopodium pear-shaped, apex puberulent, style short.
  • 2 longer fruit calyx lobes up to 2.5 cm × 1 cm, narrowly obtuse, 3 shorter ones up to 7 mm × 4 mm, ovate, acuminate.

H. dyeri is locally abundant and occurs on well-drained soils on low hills and ridges up to 1000 m altitude. The density of the wood is 575-915 kg/m3 at 15% moisture content.

Selected sources

30, 76, 89, 100, 102, 253, 258, 318, 476, 677, 748.

Main genus page


  • K.M. Kochummen (selection of species),
  • F.T. Frietema (selection of species)