Hopea dasyrrhachis (PROSEA)

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Plant Resources of South-East Asia
Introduction
List of species


Hopea dasyrrhachis v. Slooten

Protologue: Bull. Bot. Gard. Buitenzorg, ser. 3, 17: 130, f. 18 (1941).

Vernacular names

  • Indonesia: damar puteh (South Kalimantan), tekam ayer, tekam rayap (West Kalimantan).

Distribution

South and West Kalimantan.

Uses

The timber is used as merawan. It is used for poles and small beams. The tree yields a dammar which is used locally.

Observations

  • A small to medium-sized tree of up to 32 m tall, bark surface dark; twig apices and panicles buff pubescent.
  • Leaves ovate-falcate, 7-15 cm × 2.5-8 cm, somewhat leathery, base cuneate, acumen up to 1.5 cm long, venation scalariform, midrib raised above, secondary veins 12-14 pairs, arched at 50-60°, slender.
  • Stamens 10, in a single verticil, ovary and stylopodium subcylindrical, terminating in a short truncate style.
  • 2 longer fruit calyx lobes suborbicular, up to 4 cm × 3.5 cm, chartaceous, frequently subauriculate, 3 shorter ones suborbicular, up to 6 mm × 7 mm, saccate.

H. dasyrrhachis is locally very common, even semi-gregarious, on sandy or clayey soil on river banks, up to 800 m altitude. The density of the wood is 580-960 kg/m3 at 15% moisture content. See also the table on wood properties.

Selected sources

31, 258, 461, 741, 748.

Main genus page

Authors

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