Dipterocarpus cornutus Dyer

Species

Angiosperms > Malvales > Dipterocarpaceae > Dipterocarpus

Characteristics

Large pale-barked tree. Twigs, leaf buds, stipule outside, petiole, leaf beneath including nervation, midrib above, calyx, corolla outside and ovary apex densely persistently pale ocherous-cream puberulent, sometimes fulvous on twigs; fruit calyx glabrescent; leaf bud, stipule and base of inflorescence frequently also densely ± caducously long rufous tufted tomentose, the short even indumentum persisting after the tufts drop. Twig c. 10 by 8 mm, stout, somewhat compressed, pale brown, sometimes becoming papery flaky. Bud to 6 by 1 cm, lanceolate, acute; stipule to 20 by 4 cm, lorate, narrowly obtuse. Leaves 15-30 by 7.5-18 cm, broadly elliptic to oblong-ovate, thickly coriaceous, cream beneath, prominently persistently plicate; base obtuse; apex obtuse or subretuse; nerves 18-21 pairs, prominent beneath; tertiary nerves very slender, hardly elevated, densely scalariform; petiole 5-8.5 cm long, c. 4 mm ø, long, stout. Inflorescences to 28 cm long, to 5 by 3 mm ø at base, axillary, somewhat compressed, unbranched, bearing to 10 distichous flowers. Flower bud to 3.5 by 1 cm, fusiform. Stamens 30, exceeding style at anthesis; filaments short, broad, applanate, deltoid; anthers c. 5 times length of filaments, broadly linear-lanceolate, tapering; appendage stoutly acicular, tapering, c. 1/3 length of anther. Ovary ovoid, small, densely hirsute as also the basal 1/2 of the stoutly columnar ± capitate style. Fruit shortly pedicellate to subsessile; calyx tube to 2.5 cm long, to 3.7 cm ø including the 5 prominent distal tubercles, subglobose, densely verrucose lenticellate; 2 longer lobes to 21 by 5 cm, oblong, narrowly obtuse, abruptly constricted to c. 2 cm wide and revolute at base; 3 shorter lobes to 15 by 15 cm, suborbicular, revolute.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 40.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

An upper canopy tree of lowland forest, frequently common or semigregarious. Growing on well drained flat or undulating land or hills at elevations up to 1,000 metres.
More
Lowland forest to 1000 m, on well drained flat or undulating land or hills; frequently common or semigregarious.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Uses material oil timber wood
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Dipterocarpus cornutus world distribution map, present in Indonesia, India, Malaysia, and Singapore

Conservation status

Dipterocarpus cornutus threat status: Critically Endangered

Identifiers

LSID urn:lsid:ipni.org:names:320657-1
WFO ID wfo-0000651314
COL ID 36QTK
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Dipterocarpus cornutus Parinari dillenifolia