Hopea pedicellata (Brandis) Sym., Gard. Bull. S.S. 9 (1938)
Latin for 'flower stalk'.
Hopea griffithii var. pedicellata Brandis
Hopea siamensis Heim
Emergent tree up to 66 m tall and 92 cm dbh. Stem with resin. Stipules up to
ca. 2 mm long. Leaves alternate, simple, penni-veined, with inconspicuous
secondary veins placed close together. Flowers ca. 3 mm in diameter,
white-yellow, placed in panicles. Fruits ca. 6 mm long, green-red, with two ca.
30 mm long wings, wind dispersed.
Medium-sized tree with flaky bark, thin buttresses
and sometimes a few stilt roots. Young twig and
domatia grey-brown puberulent, glabrescent; petiole,
leaf bud and stipule persistently so. Twig c. 1 mm
apically, slender, much branched, terete, smooth;
stipule scars short, obscure. Bud to 1 by 1 mm,
ellipsoid, obtuse, minute. Stipule small, linear, fugaceous.
Leaves 4-9 by 1-3.5 cm, ovate-lanceolate, base
cuneate; acumen to 1.5 cm long, subcaudate, slender;
nervation dryobalanoid, main nerves c. 8-12 pairs,
with subequal secondaries, indistinct, slender, hardly
raised; midrib raised on both surfaces; petiole 6-8 mm
long. Panicle to 2 cm long, terminal or axillary, terete,
caducous puberulent; singly branched. Calyx glabrous,
2 outer lobes ovate, acute. 3 inner suborbicular,
mucronate. Petals sericeous on parts exposed in bud,
pale yellow. Stamens 15, unequal; filaments compressed
at base, tapering abruptly medially and
filiform below the oblong anthers; appendage to
connective filiform, c. twice length of anthers. Ovary
with stylopodium, cylindric-conical, attenuate, truncate,
punctate in the distal half, surmounted by a short
style. Fruit glabrous. Pedicel c. 2 mm long, 2 longer
calyx lobes to 3 by 0.5 cm, spatulate. c. 2 mm broad
above the c. 5 by 3 mm ovate saccate thickened base; 3
shorter lobes to 3 by 3 mm, ovate, saccate, adpressed
to the nut. Nut to 6 by 4 mm, ovoid, abruptly acute. [from Flora Malesiana]
In undisturbed mixed dipterocarp forests up to 1000 m altitude. On hillsides
and ridges with rich clay soils.
The resin and timber are used.
Indo-China, Thailand, Peninsular Malaysia, Borneo.
Borneo: Garik kecil daun, Luis, Selangan, Selangan batu merah.
Malaysia: Mata kuching bukit.