Parashorea malaanonan (PROSEA)
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Introduction |
Parashorea malaanonan (Blanco) Merr.
- Protologue: Sp. Blanc.: 271 (1918).
Synonyms
- Shorea malaanonan (Blanco) Blume (1852),
- Parashorea plicata Brandis (1895).
Vernacular names
- Brunei: urat mata (Malay), anyit (Murut)
- Malaysia: urat mata daun lichin (Sabah)
- Philippines: bagtikan, white lauan (general), malaanonan (Tagalog).
Distribution
Northern Borneo and the Philippines.
Uses
The timber is used as white seraya and P. malaanonan is the most important commercial tree from northern Borneo. The wood is mainly used for the manufacture of plywood.
Observations
- A very large tree up to 60 m tall, bole straight, cylindrical, branchless for 20-25(-30) m and with a diameter of up to 100(-200) cm, buttresses large, up to 4.5 m high, bark surface grey or nearly black, outer bark yellowish-brown, inner bark reddish-brown, sapwood pale yellowish.
- Leaves elliptical to ovate, 9-12.5(-15) cm × 3.5-5(-7.5) cm, adult leaves glabrous on both sides, secondary veins 9-10(-14) pairs, petiole 12-20 mm long, stipule scars amplexicaul.
- Fruit calyx much longer than the nut, 3 larger lobes up to 16 cm × 1.7 cm, 2 shorter ones up to 10 cm × 0.7 cm, nut ellipsoid, up to 1.7 cm × 1.4 cm, verrucose.
P. malaanonan is locally abundant and sometimes gregarious in primary lowland forest in the Philippines and Sabah (more rare in other parts of Borneo) and occurs up to 500(-1300) m altitude. The density of the wood is 435-675 kg/m3 at 15% moisture content. Wood from the northern Philippines resembles gerutu timber in properties. See also the table on wood properties.
Selected sources
10, 30, 31, 89, 98, 100, 112, 115, 175, 249, 254, 258, 408, 423, 476, 479, 483, 514, 579, 608, 680, 738, 748, 815.
Main genus page
Authors
- W.M. America (selection of species)