Dryobalanops lanceolata Burck, Ann. Jard. Bot. Btzg. 6 (1887)
Latin for 'lance-shaped', referring to the leaves.
Dryobalanops kayanensis Becc.
Dryobalanops oblongifolia Dyer
Emergent trees up to 69 m tall and 230 cm dbh. Stem with resin. Stipules up
to ca. 12 mm long. Leaves alternate, simple, penni-veined, rather narrow and
long, secondary veins placed close together. Flowers ca. 14 mm in diameter,
white-yellow, placed in panicles. Fruit ca. 15 mm long, green-yellow-red, with
five up to ca. 90 mm long wings placed on top of the calyx cup, wind dispersed.
Emergent trees up to 69 m tall and 230 cm dbh. Stem with resin. Leaf bud and stipule sometimes
shortly fugaceous tomentose, otherwise entirely glabrous. Twigs 1.5-2 mm apically, slender, dotted
with minute pale brown lenticels, smooth but for the prominent ribs above the lateral bundles of the
petiole. Bud 4 by 1 mm, narrowly lanceolate. Stipule to 12 by 1 mm, narrowly lanceolate. Leaves
7-10 by 2-3.5 cm, lanceolate, thinly coriaceous, base cuneate, with revolute margin, acumen to 1 cm
long, slender; margin frequently undulate; petiole c. 1 cm long, slender. Panicle to 6 cm long;
terminal or axillary, ribbed and angular on drying, glabrous; simple or singly branched. Flower bud
to 12 by 5 mm, fusiform, obtuse. Calyx glabrous; lobes subequal, lanceolate, obtuse. Corolla
white; petals lanceolate, acute, glabrescent. Stamens c. 30, subequal, shorter than the style;
filaments compressed, slender, tapering, united at base; anthers linear; appendage to connective
short, hardly exceeding anther apex. Ovary small, ovoid, glabrous; style filiform, c. 3 times length
of ovary, glabrous. Fruit calyx with to 2 cm diameter, to 5 mm deep, shallow cup at base, impressed
at the pedicel; with a shallow tubercle at the base of each calyx lobe; lobes to 9 by 2 cm,
spatulate, equal, obtuse, tapering gradually to a 3-5 mm broad base. Nut to 2 cm long and diameter,
ovoid to globose, glabrous, subacute. [from Flora Malesiana]
Widespread on fertile clay-rich soils, abundant on undulating land on basic volcanics and
calcareous shale to 700 m.
Timber is used. Resin is used as fuel and anti infectant.
Borneo: Adu (Kwijau), Jalam (Dusun), Kapur, Kapur bukit (Brun.), Kapur daram (Brun.),
Kapur paji (Iban), Kapur paya, Ngeri (Bassap), Paji (Iban), Sesuan (Murut).