Dipterocarpus applanatus Slooten

Species

Angiosperms > Malvales > Dipterocarpaceae > Dipterocarpus

Characteristics

Twig, base of inflorescence and inside of stipule shortly evenly pale buff pubescent, base of petiole caducously so; leaf bud and stipule outside longer tomentose, longest towards apices. Twig 5-11 mm ø, stout, pale with prominent slightly depressed dark stipule scars. Bud 4-15 by 10-27 mm, broadly ellipsoid to falcate, acute or obtuse. Stipule to 5 by 2 cm, oblong, obtuse, concave. Leaves 12-30 by 9-20 cm, usually large, ± broadly elliptic, coriaceous but undulate; base obtuse to subcordate; acumen short, abruptly acuminate; nerves 11-15 pairs, prominent, at 45°-70°; tertiary nerves remote, subreticulate; petiole 3.5-6 cm long, to 4 mm ø. Flowers unknown. Raceme to 2 cm long, terete but rugose on drying, glabrescent, singly branched or bifurcating, bearing distichous fruit at c. 3 cm intervals. Fruit pedicel to 3 mm long, tapering from base of calyx tube; calyx tube to 5 by 4.5 cm, glabrous, ovoid, bearing 5, to 8 mm wide, prominent sharp-edged ribs; ribs widest distally and there frequently undulate, sometimes absent basally; 2 longer calyx lobes to 19 by 4.5 cm, glabrous, lorate, obtuse, tapering abruptly at the somewhat revolute base; 3 shorter calyx lobes to 1 by 1 cm, suborbicular, completely revolute.
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Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
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Photosynthetic pathway c3

Environment

Locally common on sandy soils, especially in valleys and on flat land near coasts.
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Hardiness (USDA) 10-12

Usage

Uses material
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Cultivation

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Distribution

Dipterocarpus applanatus world distribution map, present in Malaysia

Conservation status

Dipterocarpus applanatus threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:320631-1
WFO ID wfo-0000651289
COL ID 36QSV
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Dipterocarpus applanatus