Dipterocarpus crinitus (PROSEA)
- Protologue: Fl. Brit. India 1: 296 (1874).
- Dipterocarpus hirtus Vesque (1874),
- Dipterocarpus tampurau auct. non Korth.
- Brunei: keruing (m)empelas
- Indonesia: keruing bulu (Sumatra, Kalimantan), amperok (East Kalimantan), mara keluang (Sumatra)
- Malaysia: keruing (m)empelas (general)
- Thailand: yang-khai (peninsular).
Peninsular Thailand, Peninsular Malaysia, Sumatra and Borneo.
D. crinitus is an important source of keruing. The wood is occasionally used for pulp and paper production. Wood-oil, which is abundant, is collected from the bole. The bark is used for local houses.
- A large to very large tree of up to 60 m tall, bole tending to become irregular with age, up to 200 cm in diameter, buttresses absent or low, sometimes continuing up to 3 m as ridges, rounded, strongly concave, bark surface dark orange-brown to greyish, scaly, outer bark yellowish-brown to cream; buds oblong, golden-brown tufted tomentose.
- Leaves elliptical, 6-9 cm × 3-5 cm, base obtuse, apex obtuse or shortly acuminate, secondary veins 13-15 pairs, fugaceous pubescent above and on the veins beneath, petiole 1.5-2.5 cm long, stipules lanceolate, obtuse, persistently golden tomentose outside.
- Stamens 15.
- Fruit calyx tube glabrous, spherical, smooth, 2 larger fruit calyx lobes up to 8 cm × 1.5 cm, 3 shorter ones up to 3 mm long.
D. crinitus is widespread and occurs in mixed dipterocarp forest on undulating land and low hills, on leached clay-rich soils, at low altitudes or rarely up to 850 m altitude. The density of the wood is 740-1070 kg/m3at 15% moisture content. See also the table on wood properties.
30, 89, 102, 140, 258, 297, 318, 417, 461, 479, 514, 628, 677, 685, 737, 748, 799.
Main genus page
- T. Smitinand (selection of species),
- C. Phengklai (selection of species),
- L.E. Groen (selection of species)