Hopea altocollina (PROSEA)
Hopea altocollina P. Ashton
- Protologue: Gard. Bull. Sing. 22: 271, pl. 16 (1967).
- Brunei: luis gunong.
The wood is used as merawan and is suitable for door and window frames, particle board and, when treated, railway sleepers.
- A large tree of up to 50 m tall, bole straight, cylindrical, with a diameter up to 165 cm, buttresses prominent, branching, thin, up to 4 m tall, bark surface pale fawn-brown, shallowly longitudinally irregularly flaking, inner bark pale yellow-brown, sapwood cream, turning to a pale coffee-brown heartwood; plant glabrous, except sepals and petals sericeous outside.
- Leaves lanceolate, 7-10 cm × 3-4.5 cm, base obtuse, appearing cuneate owing to the prominently revolute margin, acumen slender, up to 1 cm long, venation dryobalanoid, midrib slightly elevated above, secondary veins about 16 pairs, more or less indistinct.
- Stamens 15, ovary and stylopodium cylindrical, style short
- 2 longer fruit calyx lobes up to 4.5 cm × 0.8 cm, 3 shorter ones up to 4 mm × 4 mm, suborbicular, obtuse, shorter than the nut.
H. altocollina is locally frequent on clay-rich soils, hillsides and spurs at 800-1000 m altitude. The density of the wood is 735-835 kg/m3 at 15% moisture content.
31, 258, 359, 748.
Main genus page
- K.M. Kochummen (selection of species),
- F.T. Frietema (selection of species)