Hopea glaucescens (PROSEA)

Plant Resources of South-East Asia
Introduction

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).

Peninsular Malaysia.

The timber is used as merawan.

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.

258, 677, 748.