Gonystylus macrophyllus (PROSEA)
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Introduction |
Gonystylus macrophyllus (Miq.) Airy Shaw
- Protologue: Kew Bull.: 9 (1947).
Synonyms
- Gonystylus miquelianus Teijsm. & Binnend. (1862),
- Gonystylus philippinensis Elmer (1915),
- Gonystylus obovatus Merr. (1917).
Vernacular names
- Indonesia: pinang bai (Sumatra), garu kapas (West Java), garu campaka (West Kalimantan)
- Malaysia: kelembak (Peninsular, Johor)
- Philippines: lanutan-bagyo, anauan, busilak (general).
Distribution
Throughout the Malesian area and reaching the Solomon Islands, except for Central and East Java and the Lesser Sunda Islands, and on the Nicobar islands.
Uses
The timber is an important source of ramin; it is often heavier than that of other species. The heartwood is used for incense.
Observations
- A medium-sized to large tree of up to 45 m tall, bole up to 100 cm in diameter.
- Leaves exceedingly variable in size and shape, oblong, elliptical, obovate or sublanceolate, 2-40 cm × 2-15 cm, cuneate to rounded at base, acuminate to rounded or even retuse at apex, glabrous, petiole up to 25 mm long.
- Inflorescence elongate, up to 20 cm long.
- Calyx lobes not reflexed, petals 20-40, narrowly subulate, glabrous.
- Fruit subglobose, up to 7 cm in diameter.
G. macrophyllus occurs in primary forest at low and medium altitudes, ascending to 1200 m in Sumatra and to 1500 m in Sabah and the Philippines. It might well prove that the present concept of this species is too wide and that several distinct species can be recognized, especially from the eastern Malesian region. The density of the wood is about 550 kg/m3 at 15% moisture content.
Selected sources
9, 35, 146, 175, 360, 748, 771.
Main genus page
Authors
- L.E. Groen (selection of species)