Dipterocarpus pachyphyllus Meyer

Species

Angiosperms > Malvales > Dipterocarpaceae > Dipterocarpus

Characteristics

Freshly opened young parts evenly shortly pale tawny tomentose, fugaceous on all but bud, stipule and raceme. Twig to 4 by 2.5 cm ø towards apex, compressed, smooth, with prominent raised stipule scars. Bud c. 18 by 4 mm, linear, acute. Stipule to 4 by 1.2 cm, linear to deltoid, subacute. Leaves 9-17 by 5-9 cm, broadly ovate, thickly coriaceous; base obtuse to subcordate; acumen to 1 cm long, broad; nerves 10-12 pairs, distant, prominent, straight but curving abruptly at the margin and coalescing to form an indistinct intramarginal nerve; petiole 2-3.4 cm long, slender, prominently geniculate. Raceme to 5 cm long, terminal or axillary, terete, simple, flowers distichous. Flower bud to 15 by 5 mm. Calyx densely golden-tawny pubescent; wings prominently undulate. Corolla typical. Stamens 23-25, shorter than style; filaments as long as anthers, applanate at base, tapering; anthers narrowly oblong; appendage to connective somewhat shorter than anther, stout at base, tapering. Ovary narrowly ovoid, densely pubescent; stylopodium indistinct, tapering into style; style filiform, glabrous except at base, somewhat shorter than ovary and stylopodium. Fruit calyx entirely glabrous, pruinose; tube to 2.5 by 2 cm including wings, subglobose, completely hidden by the intricate folds of the 5 wings; 2 longer lobes to 13 by 3 cm, spatulate, subacute, with one long median nerve and two short laterals; 3 shorter lobes to 1 by 1.5 cm, broadly deltoid, recurved.
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Growth form tree
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Sexuality hermaphrodite
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Mature height (meter) 0.15 - 1.47
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Environment

Scattered on leached clay soils in mixed Dipterocarp forest, undulating land and hillsides to 400 m.
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Hardiness (USDA) 10-12

Usage

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Edible -
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Cultivation

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Distribution

Dipterocarpus pachyphyllus world distribution map, present in Brunei Darussalam, Malaysia, and Saudi Arabia

Conservation status

Dipterocarpus pachyphyllus threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:320730-1
WFO ID wfo-0000651392
COL ID 36QVW
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Dipterocarpus pachyphyllus