Hopea depressinerva (PROSEA)

Plant Resources of South-East Asia Introduction

List of species

Hopea depressinerva P. Ashton

Protologue: Gard. Bull. Sing. 22: 275, pl. 20 (1967).

Distribution

Borneo (western Sarawak).

Uses

The timber is used as giam, but is probably only of local value.

Observations

• A medium-sized tree of up to 25 m tall, bole with a diameter of up to 50 cm, bark surface slightly cracked, inner bark pale yellowish-brown; young parts glabrescent.
• Leaves lanceolate to narrowly elliptical, 5-13 cm × 2-5 cm, leathery, base cuneate, acumen slender, up to 1.5 cm long, venation scalariform, midrib slightly depressed above, secondary veins 6-8 pairs, ascending at 40-50°, slender but raised beneath, depressed above.
• Calyx densely buff sericeous, lobes ovate, acute, the outer 2 somewhat longer and comparatively narrower than the inner 3, stamens 10, equal, forming a ring around the ovary, ovary and stylopodium glabrous, cylindrical, truncate, surmounted by a short style.
• Mature fruits unknown.

H. depressinerva is confined to granodiorite hill slopes, where it appears to occur locally gregariously in mixed dipterocarp forest below 500 m altitude.

Selected sources

31, 258, 748.

Main genus page

• Hopea (giam)

Authors

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