3565

5(1): Timber trees; Major commercial timbers

Hopea odorata Roxb.

This article should be read together with the article on the genus: Hopea (merawan) in the Handbook volume indicated above in this database.

Pl. Coromandel 3: 7, t. 210 (1819).

Malaysia: merawan siput jantan, chengal pasir, chengal mas (Peninsular). Burma: thingan, net, sauchi. Cambodia: kôki:(r) mosau, kôki:(r) thmâr:(r). Laos: (maiz) kh'è:n, kh'èn h'üa. Thailand: takhian-thong, takhian-yai (general), khaen (north-eastern). Vietnam: sao den, sao b[ax] m[is]a, sao c[as]t.

Bangladesh, Burma, Laos, southern Vietnam, Cambodia, Thailand, the Andaman Islands and northern Peninsular Malaysia.

The timber is used as merawan. The wood is suitable for rollers in the textile industry, piles, and bridge construction and as an alternative to maple for shoe and boot lasts. Hopea odorata is sometimes used as a shade tree. The bark has a high tannin content, and is suitable for tanning leather; it also produces an inferior quality dammar ('rock dammar'). The Burmese use this dammar as a varnish over paint, and associate it with paint in pictures; they are said to mix it with ink. It is also used to caulk boats. The dammar is medicinally applied to sores and wounds. In Indo-China the bark has been used as a masticatory.

A medium-sized to large tree of up to 45 m tall, bole straight, cylindrical, branchless for up to 25 m, with a diameter of up to 120 cm and prominent buttresses, bark surface scaly, dark brown, outer bark rather thick, inner bark dull yellow, tinged green at the cambium, sapwood resinous; young parts sparsely pale buff puberulent; leaves ovate-lanceolate, 7-14 cm 3-7 cm, falcate, base broadly cuneate, unequal, acumen broad, up to 1.5 cm long, venation scalariform, midrib applanate to slightly channelled above, secondary veins 9-12 pairs, prominent beneath, arched, with prominent saccate axillary domatia; stamens 15, anthers narrowly ellipsoid, ovary ovoid, punctate or glabrous, surmounted by an equally tall columnar style; 2 longer fruit calyx lobes up to 5.5 cm 2 cm, broadly spatulate, saccate, 3 shorter ones up to 4 mm 4 mm, ovate, subacuminate. Hopea odorata is a riparian species and usually occurs on deep rich soils up to 600 m altitude. The density of the wood is 620-930 kg/m³ at 15% moisture content.

[102]Burkill, I.H., 1966. A dictionary of the economic products of the Malay Peninsula. 2nd edition. Ministry of Agriculture and Co-operatives, Kuala Lumpur. Vol. 1 (A–H) pp. 1–1240. Vol. 2 (I–Z) pp. 1241–2444.
[150]Corbineau, F. & Come, D., 1989. Experiments on germination and storage of the seeds of two dipterocarps: Shorea roxburghii and Hopea odorata. Malaysian Forester 49: 371–381.
[235]Flore du Cambodge du Laos et du Viêtnam (various editors), 1960–. Muséum National d'Histoire Naturelle, Paris.
[253]Foxworthy, F.W., 1932. Dipterocarpaceae of the Malay Peninsula. Malayan Forest Records No 10. Printers Limited, Singapore. 289 pp.
[258]Fundter, J.M., 1982. Names for dipterocarp timbers and trees from Asia. Pudoc, Wageningen. 251 pp.
[324]Ho, K.S., 1981. Malaysian timbers – merawan. Malaysian Forest Service Trade Leaflet No 53. Malaysian Timber Industry Board, Kuala Lumpur. 10 pp.
[358]Kaur, A. et al., 1986. Cytoembryology of some Malaysian dipterocarps, with some evidence of apomixis. Botanical Journal of the Linnean Society 92: 75–88.
[359]Keating, W.G. & Bolza, E., 1982. Characteristics, properties and uses of timbers. Vol. 1. South-East Asia, Northern Australia and the Pacific. Inkata Press Proprietary Ltd., Melbourne, Sydney & London. 362 pp.
[503]Natawiria, D., Kosasih, A.S. & Mulyana, A.D., 1986. Some insect pests of dipterocarp seeds. Buletin Penelitian Hutan 472: 1–8.
[599]Santoso, E., 1989. Pengaruh mikoriza terhadap diameter batang dan bobot kering anakan Dipterocarpaceae [The effect of mycorrhizae on the stem diameter and dry weight of dipterocarp seedlings]. Buletin Penelitian Hutan 504: 11–21.
[600]Satohiko S., 1980. Growth and storage of bare-root planting stock of dipterocarps with particular reference to Shorea talura. Malaysian Forester 43: 144–160.
[601]Satohiko S., 1980. Storage and germination of some Malaysian legume seeds. Malaysian Forester 43: 161–165.
[628]Smitinand, T., Santisuk, T. & Phengklai, C., 1980. The manual of Dipterocarpaceae of mainland South-East Asia. Thai Forestry Bulletin 12: 1–110.
[677]Symington, C.F., 1941. Foresters' manual of dipterocarps. Malayan Forest Records No 16. Forest Department, Kuala Lumpur. pp. xliii + 244.
[685]Tang, H.T. & Tamari, C., 1973. Seed description and storage tests of some dipterocarps. Malaysian Forester 36: 113–128.
[748]van Steenis, C.G.G.J. & de Wilde, W.J.J.O. (Editors), 1950–. Flora Malesiana. Kluwer Academic Publishers, Dordrecht, Boston, London.

K.M. Kochummen, F.T. Frietema

Kochummen, K.M. & Frietema, F.T., 1993. Hopea odorata Roxb.. 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