Lee Kong Chian Natural History Museum

Dipterocarpus costulatus Slooten

Kingdom:Plantae
Phylum/Division:Magnoliophyta
Class:Eudicots
Order:Malvales
Family:Dipterocarpaceae
Genus:Dipterocarpus
Species:D. costulatus
Status:Vulnerable

Description

A typical Dipterocarpus species. The bole is grey and has large lenticels. Leaves are about 16 × 12 cm, wavy at the edges and ridged at between the veins. The leaves are leathery, glabrous and usually wedge shaped at the base. Stipules go to about 16 cm long, softly hairy and pinkish. The fruits, about 1.5 cm across, have prominent stalk and rather sharp warts on the calyx tube. Two long wings about 20 × 4 cm.

Read more about the Malvales order.
Read more about the Dipterocarpaceae family.

Distribution

Malay Peninsula to Singapore, Sumatra and northern Borneo.

Localities

MacRitchie

General Biology

Dipterocarpus costulatus is generally found in low-lying forests that are at times flooded, but is also found on hills up to 600 m. 

Life Cycle

Mass flowers at long irregular intervals, as typical of the family. 

Human Uses

An important source of the keruing timber. 

References

Chong, K. Y., H. T. W. Tan & R. T. Corlett, 2009. A Checklist of the Total Vascular Plant Flora of Singapore: Native, Naturalised and Cultivated Species. Raffles Museum of Biodiversity Research, National University of Singapore, Singapore. 273 pp.

Symington, C.F., 2004. Foresters' Manual of Dipterocarps. Revised by Ashton, P.S. & Appanah, S., Edited by Barlow, H.S. Caxton Press Ltd, Kuala Lumpur, Malaysia.  

Habitats

Related Places

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