A genus in the family Dipterocarpaceae.
Information about these species has been sourced from the following:
Foresters’ Manual of Dipterocarps, by C. F. Symington, Malayan Forest Records No. 16, revised in 2004 and published by the Malaysian Nature Society.
Tree Flora of Sabah and Sarawak, Vol. Five, edited by E. Soepadmo. L.G. Saw and R.C.K. Chung; published by the Gvt. of Malaysia
Dipterocarpus alatus
Dipterocarpus alatus was naturally distributed in central and southern Vietnam, Cambodia, Laos, the Philipines, and Myanmar; recently it has been found on Pulau Payar, Kedah. It is recorded as a Vulnerable species in Peninsula Malaysia. Its resin is used medicinally.
Images from 2022:
D. alatus bark 
D. alatus bark 
D. alatus canopy
Dipterocarpus baudii
keruing bulu
Indo China, Burma, Thailand, Malaya, Sumatra. In every state, but rare, used to be comparatively abundant in Sungai Buloh. Rapid early growth, girth of 3′ in 20 years. Prefers low lying but well drained forest. 2 located E of northern end of stream valley, one on back fence in line with back of Uda Manap.
Images from August 2022:
Dipterocarpus caudiferus Merr.
keruing putih
Latin, cauda = tail, ferre = to bear (the narrow acumen of leaf apex). Immense emergent tree to 65m, columnar bole and buttresses to 3.5m. Endemic Borneo, not in S & SW. Norsham 5.13.
Dipterocarpus chartaceus
keruing kertas
From Thailand to Johor, but rare, generally in low coastal locations. Crisp papery dead leaf. Twigs are terminated by buds protected by sheathing stipules that fall to reveal a young folded leaf and another expanding bud beneath.
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Dipterocarpus cornutus
keruing gombang
Malaya & Borneo.
Rare over large areas, but common in parts of Perak, Ulu Selangor, K. Pilah, w. Pahang and w. Johor. Conspicuous crown of large light coloured leaves. Twigs and buds covered with velvety tomentum. Leaves oblong, 20 x 12 cm, with c. 20 prs nerves, ridges between.
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Dipterocarpus costulatus
keruing kipas
All states Malaya, Sumatra, N. Borneo. On low lying flood prone land, & on hills. Endangered. Leathery, glabrous, ridged leaf acute at the base. Grey bole, bark studded with lenticles, stipules to 16 cm, tomentose, pastel pink. Planted 6/07.
Images from August 2022:
Dipterocarpus crinitus Dyer
keruing mempalas
Malaya, Sumatra, Borneo; these from Labis FR, Johor. Prefers low drained land, now vulnerable, small population at Pasoh. Small harshly hairy oval leaf. Stipules up to 5 x 2.5 cm, boat shaped, smooth or w/deciduous hairs, pink when fresh. Viable fruits rare, excessively insect predated. 2 in front on N side, under Durians.
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Dipterocarpus dyeri
Keruing etoi
A large species with coarse twigs and large many nerved leaves with slender petioles. In the peninsula it is restricted to Perlis and northern Kedah where is was tapped for oil, and is now Critically Endangered in the wild.
Images from 2022:
D. dyeri leaf 
D. dyeri bark 
D. dyeri 
D. dyeri stipule and front leaf
Dipterocarpus elongatus
keruing latek
Malaya, NE Sumatra, N Borneo. Usually in low lying forest, near swamps or on flood prone land, critically endangered by land conversion. Large many nerved leaves, & large wingless fruits. 3 planted NW of upper pond, indistinguishable from D cornutus planted later. 1 D. elongatus well established W of service driveway near original red store.
Images from August 2022:
Dipterocarpus eurhyncus Miq.
keruing baran
Sumatra, Borneo, S Philippines, Malaya in east coast south of KT, was common Arong FR Johor, now critically endangered. Small ridged leaf. From Tunas Harapan 6.2012.
Images from 2022:
Dipterocarpus gracilis
keruing kesat
Chittagong, Andamans, Vietnam, Malaya, Java, Sumatra, Philippines. Endangered. Grey bole w/reddish patches where scales have fallen; finely lenticillated bark. Leaves 15 x 8 cm, 14 -18 nerved. Planted 6/07.
Images from August 2022:
Dipterocarpus grandiflorus
keruing belimbing
From Andamans to Philippines; widespread in Malaya. Name from calyx tube like belimbing. Bole light yellow, scaly, with smooth lenticellate portions. Stipules v. large before falling, 18 x 5 cm, purple pink when fresh. Fruits among the largest of the genus. Young leaves of saplings dark purple. Planted 6/07, S of path to Uda Manap near Bulatan Plong.
Images from 2022:
Dipterocarpus humeratus Slooten
keruing kerukup
Latin humeris = shoulder; the articulated petiole. Sumatra & Borneo. In mixed Dipterocarp foests on well drained clay soils. Emergent tree to 50m with 2m buttresses. Norsham 5.13. 3 located E of upper end of stream valley.
Dipterocarpus kerrii King
keruing gondol
Andaman Islands, Burma, Thailand, Malaya, east Sumatra, Philippines. Widely distibuted, tends to be gregarious, but absent from large areas particularly on the east coast. Rather small shiny, few nerved long petioed leaves, stipules silky on inside. Large globose fruits. Norsham 5.13; 5 planted north of chicken coop.
Images from August 2022:
Dipterocarpus kunstleri
keruing gombang merah
Malaya, Sumatra, Borneo, Philippines. Lowlands, now endangered. Twigs w/broad stipular collars, large glabrous leaves. Young boles marked w/horizontal furrows, older yellowish bark studded w/diffuse, medium lenticels. Linear stipules. Leaves broad ovate or elliptic, 22 x 15 cm, 15 nerved, petioles 5-7 cm, black, glabrous. Planted 6/07.
Estimated height in 08/2022: 23 m
Early image 
2022 image
Dipterocarpus oblongifolius Bl.
keruing neram
Borneo, Malaya, along rivers above tidal zone, strictly riparian. Rare in west, but in Bubu FR Perak. Secure in Taman Negara, but threatened elsewhere. Thick fissured bark, sub-ovate velvety leaves. Fr Tunas Harapan 6.2012, located NNW of upper pond.
Images from August 2022:
Dipterocarpus rigidus
Keruing cogan
Dipterocarpus rigidus is found in the Malay Peninsula, the Riau and Lingga archipelagos, Borneo and the Anamba Islands. It is known askeruing cogan. It occurs only in the east of the peninsula, on coastal hills of Terengganu, Pahang and Johor. It is now endangered by logging and land conversion.
Images from August 2022:
Dipterocarpus sarawakensis Sloot
keruing layang
Sarawak, Brunei, south Borneo, & near Kemaman River, Terengganu. On low leached sandy soils. Extinct in Malaya? Small obovate obtuse leaf, wavy margin towards apex, short petiole, dense coarse indumentum. Fr Tunas Harapan 6.2012. One located in open path to W of Bulatan Plong, the latter from TH in front near grove of Shorea sumatrana.
Previous images:
Images from 2022:
Dipterocarpus sublamellatus Foxw.
keruing kerut
Sumatra, N Borneo, Malaya. Most abundant on undulating land s of Temerloh, scattered on west coast. Small ridged leaves, sub-lamellate fruits. Fr Tunas Harapan 6.2012. Also 3 trees north of Dance studio, originally identified as D. dyeri, fruited in 2014, and seem to be D. sublamellatus.
Images from August 2022:
Dipterocarpus tempehes
Keruing asam
Dipterocarpus tempehes is endemic to Borneo where it is known as keruing asam in Sabah, and keruing tempayan in Sarawak. A low emergent tree to about 40m tall, with buttresses up to 2m. It is classified as Vulnerable, and possibly endangered by forest conversion.
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