Hopea dyeri F.Heim

Species

Angiosperms > Malvales > Dipterocarpaceae > Hopea

Characteristics

Medium-sized tree with flaking bark and thin low buttresses and stilt roots. Bud, stipule, panicle and domatia persistently grey-brown pubescent, twig and petiole caducously so. Twig to 1 mm ø apically, slender, terete, much branched, becoming smooth. Bud minute, ovoid, obtuse. Stipule to 1.5 mm long, linear, caducous. Leaves 2.7-7 by 1.2-2.5 cm, ovate-lanceolate, somewhat coriaceous, frequently lepidote beneath; base cuneate, subequal; acumen to 1.5 cm long, narrow, caudate; margin frequently slightly revolute; nerves 8-12 pairs, slender, slightly raised, distinct beneath with many distinct secondaries frequently subequal to them; midrib stout, raised on both surfaces, more prominently raised above than beneath; petiole 5-8 mm long, short, slender. Panicle to 3 cm long, terminal or axillary, borne singly, terete; singly or doubly irregularly branched, the branchlets short, bearing to 4 flowers; bracteoles minute, oblong, obtuse, pubescent, fugaceous. Flower cream; bud small, ovoid, Calyx puberulent to glabrous outside, glabrous within; 2 outer lobes narrowly ovate, sub-acuminate; 3 inner lobes thin, suborbicular, mucronate. Petals narrowly lanceolate, densely pubescent on parts exposed in bud. Stamens 15, in 3 whorls; filaments broad at base, tapering; anthers subglobose; appendage to connective about twice length of anther. Ovary and stylopodium pyriform, glabrous but for the puberulent apex, crowned by a short glabrous style. Fruit calyx glabrous; 2 longer lobes to 2.5 by 1 cm, small, spatulate, narrowly obtuse, to 2.5 mm broad above the to 5 by 3 cm narrowly deltoid slightly thickened saccate base; 2 shorter lobes to 7 by 4 mm, ovate, glabrous, acuminate, acute, thin. Nut to 9 by 4 mm, narrow, ovoid; style remnant short, acute.
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Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
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Photosynthetic pathway c3

Environment

Locally abundant on well drained soils on low hills and ridges; at elevations up to 1,000 metres.
More
Well drained soils on low hills and ridges to 1000 m; locally abundant.
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Hardiness (USDA) 9-12

Usage

Uses wood
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Cultivation

Can be grown by seedlings.
Mode seedlings
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Distribution

Hopea dyeri world distribution map, present in Brunei Darussalam, India, and Malaysia

Identifiers

LSID urn:lsid:ipni.org:names:320880-1
WFO ID wfo-0000724524
COL ID 3MJDL
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Hopea microptera Hopea dyeri Hancea microptera