Dryobalanops sumatrensis (J.F.Gmel.) Kosterm., Blumea 33: 346 (1988)

Name meaning 'from Sumatra'.

Arbor camphorifera Rumph.
Dipterocarpus camphora Colebr. Dipterocarpus camphorus (Colebr.) Mart.
Dipterocarpus dryobalanops Steud.
Dipterocarpus teres Steud. [invalid]
Dryobalanops aromatica C.F.Gaertn.
Dryobalanops camphora Colebr.
Dryobalanops junghuhnii Becc.
Dryobalanops vriesii Becc.
Laurus sumatrensis J.F. Gmel.
Pterigium teres Correa
Shorea camphorifera Roxb.
Shorea costata J.Presl

Emergent trees up to 62 m tall and 197 cm dbh. Stem with resin. Stipules up to ca. 7 mm long. Leaves alternate, simple, penni-veined, secondary venation very close together. Flowers ca. 5 mm in diameter, white, placed in short panicles. Fruits ca. 35 mm long, yellow-red-purplish, with five wings originating from the calyx base up to ca. 50 mm long, wind dispersed.

Emergent trees up to 62 m tall and 197 cm dbh. Stem with resin. Young twig, raceme, stipule, petiole and leaf beneath at first sparsely minutely lepidote, appearing yellowish, becoming glabrous. Twig c. 1 mm apically, slender, smooth. Bud 2-5 by 1-1.5 mm, small, narrowly lanceolate, often compressed. Stipule 5-8 mm long, small, linear, fugaceous. Leaves 4-6 by 2-4 cm, +/- broadly ovate, coriaceous, sometimes (excluding acumen) broader than long, base cuneate or broadly obtuse, acumen to 1.5 cm long, prominent; nervation indistinct; midrib depressed above, prominent beneath; petiole 0.5-1 cm long, slender. Panicle to 7 cm long, terminal or axillary, ribbed and angular on drying, singly or doubly branched. Flower bud to 9 by 4 mm, fusiform. Calyx glabrous, lobes subequal, lanceolate, obtuse. Corolla white, petals glabrous, +/- oblong, acute. Stamens c. 30, subequal, shorter than the style; filaments slender, tapering, united at base; anthers linear; appendage to connective short, linear, somewhat exceeding anther apex. Ovary small, ovoid, glabrous; style filiform, c. 2 times length of ovary, glabrous. Fruit calyx base 6-8 mm deep, 8-15 mm diameter, cup-shaped, +/- constricted at the rim; lobes equal, 4-6 by 0.8-2 cm, spatulate, obtuse, to 3-5 mm broad at the base, entirely glabrous. Nut to 3 by 1.5 cm, ovoid, glabrous, constricted at the apex of the calyx cup, acute, with a short style remnant. [from Flora Malesiana]

Locally dominant, gregarious on dry sandy or gravelly soils over sandstone and granite, on subcoastal hills or (rarely) inland quartzite dikes to 400 m elevation.

Timber is used.

Peninsular Malaysia, Sumatra, Borneo.

Local names
Borneo: Kapur, Kapur anggi (Brun.), Kapur bukit (Brun.), Kapur peringii (Brun.), Kapur ranggi, Keladan (Iban), Kladan, Telajin (Belait).
Malaysia: Kapus.
Sumatra: Kapur barus.