Hopea papuana (PROSEA)
Hopea papuana Diels
- Protologue: Bot. Jahrb. Syst. 57: 461 (1922).
- Papua New Guinea: light hopea.
The timber is used as merawan, especially for staircases, window and door frames, and marine constructions.
- A small or medium-sized tree of up to 30 m tall, bole branchless for up to 18 m, with a diameter of up to 90 cm, with or without buttresses, bark surface deeply fissured, dark purplish-brown or blackish, inner bark red and green, sapwood pale straw-coloured, heartwood brown; young parts persistently rufous scabrid tomentose.
- Leaves oblong, 11-28 cm × 4-10 cm, leathery, base unequal, cordate, acumen tapering, up to 2.5 cm long, venation scalariform, midrib raised above, secondary veins 16-24 pairs, arched at 70-80°, slender but prominent above, without domatia.
- Stamens 15.
- 2 longer fruit calyx lobes up to 5.5 cm × 1.8 cm, broadly spatulate, obtuse, 3 shorter ones up to 9 mm × 6 mm, ovate, subacute, similarly saccate.
H. papuana is locally abundant on alluvial soils, on low hills and on river banks up to 620 m altitude. The density of the wood is 630-730 kg/m3 at 15% moisture content. See also the table on wood properties.
67, 87, 258, 359, 735, 748.
Main genus page
- K.M. Kochummen (selection of species),
- F.T. Frietema (selection of species)