Hopea nigra Burck

Species

Angiosperms > Malvales > Dipterocarpaceae > Hopea

Characteristics

Small tree. Twigs, leaf buds, stipules and parts of petals exposed in bud densely persistently tawny pubescent; panicles sparsely +-caducously so. Twigs c. 2 mm ø apically, rather straight, hardly branched, becoming smooth, terete. Buds minute, subglobose; stipules c. 2.5 mm long, linear, not at first caducous. Leaves 3-10 by 1-4 cm, broadly lanceolate, subcoriaceous; base obtuse; acumen to 1.5 cm long, slender; nerves 8-10 pairs, very slender, +-elevated or obscure beneath, applanate or narrowly depressed above, arched, sometimes with small pubescent domatia; secondary nerves ∞, short, obscure; tertiary nerves subscalariform, obscure; midrib sharply prominent beneath, +-obscure and depressed above; petiole 3-6 mm long, short, slender. Panicle to 3 cm long, short, slender, axillary, usually solitary; singly branched, branchlets to 1 cm long, bearing c. 4 secund flowers; bracts and bracteoles to 2 mm long, linear, subpersistent. Flower bud to 2 by 1 mm, small, ovoid. 2 outer sepals narrowly ovate-acuminate, 3 inner suborbicular, mucronate, sparsely fimbriate; stamens 15, in 3 subequal verticils, exceeding style; filaments broadly compressed at base, tapering and filiform below the small subglobose anthers; appendages 2-3 times length of anthers, very slender. Ovary and stylopodium cylindrical, truncate, punctate distally; style c. 1/2 length of ovary and stylopodium, filiform. Fruit pedicel short. 2 longer calyx lobes to 5.5 by 1 cm, spatulate, ± subacute, tapering to 2 mm broad above the to 6 by 4 mm ovate saccate somewhat thickened base; 3 shorter lobes to 4 by 5 mm, suborbicular, obtuse or mucronate. Nut to 8 by 6 mm, ovoid, retaining the prominently truncate stylopodium.
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Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
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Photosynthetic pathway c3

Environment

Lowland forests.
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Hardiness (USDA) 9-12

Usage

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Edible -
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Cultivation

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Distribution

Hopea nigra world distribution map, present in Indonesia and Sri Lanka

Conservation status

Hopea nigra threat status: Critically Endangered

Identifiers

LSID urn:lsid:ipni.org:names:320960-1
WFO ID wfo-0000724611
COL ID 3MJG2
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Hopea nigra