Hopea glaucescens (PROSEA)

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Plant Resources of South-East Asia
Introduction
List of species


Hopea glaucescens Sym.

Protologue: Journ. Mal. Br. Roy. As. Soc. 19: 142, pl. 2 (1941).

Vernacular names

  • Malaysia: merawan kelabu (Peninsular, general), merawan galor (Pahang), merawan jangkang (Perak).

Distribution

Peninsular Malaysia.

Uses

The timber is used as merawan.

Observations

  • A medium-sized tree, bole with a diameter of up to 60 cm, with short buttresses or stilt-rooted, bark surface smooth; young parts puberulent.
  • Leaves elliptical, 9-18 cm × 3.5-9 cm, leathery, base cuneate, acumen slender, up to 1 cm long, glaucescent beneath in mature trees, venation scalariform, midrib distinctly elevated on both surfaces, secondary veins 12-15 pairs, slender but relatively prominent beneath, obscure above, with many distinct short veins in between.
  • Petals outside densely golden pubescent; stamens 15, ovary and stylopodium hour-glass-shaped, the ovary slightly broader, style short, tapering.
  • 2 longer fruit calyx lobes up to 7 cm × 1.5 cm, 3 shorter ones up to 20 mm × 5 mm, linear-lorate, completely enclosing nut.

H. glaucescens occurs in mixed dipterocarp forest below 500 m altitude. The density of the wood is 755-850 kg/m3 at 15% moisture content.

Selected sources

258, 677, 748.

Main genus page

Authors

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