3471

5(1): Timber trees; Major commercial timbers

Dipterocarpus humeratus v. Slooten

This article should be read together with the article on the genus: Dipterocarpus in the Handbook volume indicated above in this database.

Bull. Jard. Bot. Buitenzorg, sér. 3, 8: 308, f. 4 (1927).

Dipterocarpus gibbosus v. Slooten (1927), Dipterocarpus ursinus v. Slooten (1961).

Brunei: keruing latek bukit, keruing latek (Malay), ran (Iban). Indonesia: jelatong bulan, lagan (Sumatra). Malaysia: keruing kerukup (Sabah), keruing latek bukit (Sarawak).

Northern and eastern Sumatra and Borneo.

The timber is used as keruing.

A large tree of up to 50 m tall, bole tall, straight, cylindrical, up to 110 cm in diameter, buttresses up to 2 m tall, up to 8 cm thick, bark surface pink-brown, smooth, outer bark thin, inner bark dull pinkish-brown, sapwood pale ochre; buds narrowly conical, fulvous tomentose; leaves broadly ovate, 20-38 cm 12-23 cm, base obtuse, apex obtuse to shortly acuminate, secondary veins about 20 pairs, beneath persistently shortly pubescent, petiole 4-6 cm long, stipules narrowly lanceolate, obtuse, outside long fulvous tomentose; stamens about 40; fruit calyx tube globose, glabrous, with 5 obtuse tubercles, 2 longer fruit calyx lobes up to 18 cm 5 cm, 3 shorter ones up to 1.5 cm 1.5 cm. Dipterocarpus humeratus occurs scattered or semi-gregariously on undulating land and clay ridges below 700 m altitude. The density of the wood is 730-800 kg/m³ at 15% moisture content.

[30]Ashton, P.S., 1964. A manual of the dipterocarp trees of Brunei State. Oxford University Press, London. xii + 242 pp.
[31]Ashton, P.S., 1968. A manual of the dipterocarp trees of Brunei State and of Sarawak. Supplement. Borneo Literature Bureau, Kuching. viii + 129 pp.
[258]Fundter, J.M., 1982. Names for dipterocarp timbers and trees from Asia. Pudoc, Wageningen. 251 pp.
[469]Maury-Lechon, G., Hassan A.M. & Bravo, D.R., 1981. Seed storage of Shorea parvifolia and Dipterocarpus humeratus. Malaysian Forester 44: 267–280.
[476]Meijer, W. & Wood, G.H.S., 1964. Dipterocarps of Sabah (North Borneo). Sabah Forest Records No 5. Forest Department, Sandakan. 344 pp.
[737]van Slooten, D.F., 1927. The Dipterocarpaceae of the Dutch East Indies. II. The genus Dipterocarpus. Bulletin du Jardin Botanique, Buitenzorg, Sér. 3, 8: 263–352.
[746]van Slooten, D.F., 1961. Sertulum dipterocarpacearum Malayensium VII. Reinwardtia 5: 457–479.
[748]van Steenis, C.G.G.J. & de Wilde, W.J.J.O. (Editors), 1950–. Flora Malesiana. Kluwer Academic Publishers, Dordrecht, Boston, London.

L.E. Groen

Groen, L.E., 1993. Dipterocarpus humeratus v. Slooten. In: Soerianegara, I. and Lemmens, R.H.M.J. (Editors): Plant Resources of South-East Asia No 5(1): Timber trees; Major commercial timbers. PROSEA Foundation, Bogor, Indonesia. Database record: prota4u.org/prosea