Lee Kong Chian Natural History Museum

Dipterocarpus kunstleri King

Kingdom:Plantae
Phylum/Division:Magnoliophyta
Class:Eudicots
Order:Malvales
Family:Dipterocarpaceae
Genus:Dipterocarpus
Species:D. kunstleri
Status:Critically Endangered

Description

A large emergent, typical of the genus Dipterocarpus. The young trees have lighter-coloured boles that, as they mature, turn yellowish brown and are dotted with medium-sized lenticels. The twigs are covered by board stipular collars. The stipules are about 15 cm long, tinged green or red when fresh and covered on the outside with pale soft hair. The leaves are broadly ovate or elliptic, about 22 × 15 cm, rather thin, not hairy and drying brown on both sides. The petioles are black. The fruits are ovoid in shape, about 5 × 2.5 cm with sharp ridges on the upper half. The two wings are about 20 × 4 cm long. 

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

Distribution

Malay Peninsula, Singapore, Sumatra, Borneo and the Philippines

Localities

MacRitchie

General Biology

Dipterocarpus kunstleri is distributed in the lowland, rarely above altitude 150m. 

Life Cycle

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

Human Uses

The genus Dipterocarpus produces timber that is known collectively as keruing.  

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. 

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