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| Botanical Name | Dipterocarpus alatus Roxb. ex G. Don
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| Genus | Dipterocarpus |
| Family | Dipterocarpaceae |
| Distribution | D. alatus is native to both evergreen and dry deciduous forests from east India and the Andaman Islands to Cambodia, Laos and Vietnam, south to the border of Thailand with Peninsular Malaysia and in Luzon with the mislaid name of D. philippinensis. The habit of the Philippine populations is more seasonal than usual for those in Indo-China, with a marked dry season of 6 months. It is a riparian species and is found in hill forests, mainly in association with Swintonia floribunda and Artocarpus chaplasha. It occurs gregariously along rivers in Indo-China and Thailand up to 500 m altitude, where it is a rapid colonizer of alluvial soils. In the Philippines it is rare, occurring in mixed dipterocarp forest in seasonal areas at low and medium altitudes
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| Bole Characteristics | Apitong is a medium-sized to fairly large evergreen tree with an umbrella-like crown, that can grow up to 40 meters tall, and exceptionally to 55 meters. It has a tall, straight, cylindrical bole up to 150cm in diameter that can be branchless for up to 20 meter.
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| Herbarium Characteristics | Broadly ovate or elliptic, about 22 x 15 cm but considerably variable, rather thin in texture, glabrous and drying brown on both surfaces (not glaucous), with about 15 pairs of main nerves, petioles about 5 - 7 cm long, black and glabrous. |
