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Dryobalanops oblongifolia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malvales
Family:	Dipterocarpaceae
Genus:	Dryobalanops
Species:	D. oblongifolia
Binomial name
	Dryobalanops oblongifolia; Dyer

Dryobalanops oblongifolia is a species of plant in the family Dipterocarpaceae, native to regions of Southeast Asia and Maritime Southeast Asia.

The species name is derived from Latin (oblongus = rather long and leaf (folium = leaf); and refers to the shape of the leaf.

Description

Both produce heavy hardwood timber, which is sold under the trade name of Kapur.

There are two subspecies:

Dryobalanops oblongifolia subsp. oblongifolia (synonym = Baillonodendron malayanum F.Heim) — it is endemic to the island of Borneo.

It is found in at least one protected area (Kubah National Park), but is threatened elsewhere due to habitat loss.^[1] It is an emergent tree, up to 60 m tall, found in mixed dipterocarp forest on sandy clay soils.^[1]

Dryobalanops oblongifolia subsp. occidentalis P.S.Ashton (synonyms = Dryobalanops beccariana Ridl. & Dryobalanops ovalifolia Burkill) — found in Sumatra and Peninsular Malaysia.

^ ^a ^b ^c Ashton, P. S. (September 2004). "Dryobalanops oblongifolia Dyer". In Soepadmo, E.; Saw, L. G.; Chung, R. C. K. (eds.). Tree Flora of Sabah and Sarawak. (free online from the publisher, lesser resolution scan PDF versions). Vol. 5. Forest Research Institute Malaysia. pp. 136–137. ISBN 983-2181-59-3. Archived from the original (PDF) on 27 September 2013. Retrieved 13 November 2007.