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coastal hill forest index
  On-line Guide to Chek Jawa
coastal hill forest
 
Seashore mangosteen
Garcinia hombroniana
Family Guttiferae


A few of these rare trees grow on the rocks at the shore of Chek Jawa, but are hard to distinguish from the other trees.

Related to the mangosteen that we eat, the Seashore mangosteen has attractive bright red fruits that smell like apples. Don't eat them though; it may cause severe constipation! Each tree is either male or female. The male flowers are small cream-coloured and have a rather sickly sweet smell.

The tree has grey bark that peels off in little flakes revealing a paler grey to buff new bark. Like other members of this family, if it is cut, it produces a white latex. 'Guttiferae' means 'latex-bearing'.

The trees in this family are adapted to growing in the shade of taller trees (understorey trees).

Human uses: The mangosteens that we eat come from the Mangosteen tree (Garcinia mangostana). There are suggestions that the Mangosteen tree is a natural hybrid of the Seashore mangosteen (Garcinia hombroniana) and another relative Garcinia malaccensis. The Mangosteen tree curiously, and fortituosly for those who grow it for its fruit, appears to be self-fertilising. Male trees have apparently never been seen! The rind of the Mangosteen is traditionally used as an astringent, to treat diarrhoea and high fever. The latex of some other species in the family is used to make a paint. But that of the seashore mangosteen does not easily form an emulsion so it cannot be used for this purpose.

Status and threats: The Seashore mangosteen is a rare, endangered tree in Singapore.
 
click for enlarged image

click for enlarged image
Peeling bark
quick facts
To about 10m tall, a few trees grow on the rocks right at the shore of Chek Jawa
 
Links
Mangosteen (Garcinia mangostana) from Insect Pollination Of Cultivated Crop Plants by S.E. McGregor on Carl Hayden Bee Research Centre website: fact sheet on the Mangosteen tree and its possible origin as a hybrid between G. malaccensis and G. hombroniana.

Other references
  • Corners, E. J. H., 1997. Wayside Trees of Malaya: in two volumes. Fourth edition, Malayan Nature Society, Kuala Lumpur. Volume 1: 1-476 pp, plates 1-38; volume 2: 477-861 pp., plates 139-236.
  • Hutton, Wendy, 1996. Tropical Fruits of Malaysia and Singapore. Periplus Editions. pp. 62

 

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