Hopea apiculata Symington

Species

Angiosperms > Malvales > Dipterocarpaceae > Hopea

Characteristics

Small smooth-barked tree with sharp, often stilted buttresses. Twigs caducous tawny puberulent, petioles and outside of petals densely persistently pubescent, otherwise glabrous. Twigs c. 2 mm ø apically, straight, infrequently branched, pendant, terete, pale brown; stipule scars minute, horizontal; leaves distant. Buds minute; stipule small, linear, caducous. Leaves alternate, 12-26 by 4-8 cm, narrowly oblong-lanceolate, subcoriaceous; base cordate, equal; acumen short; nerves 12-15 pairs, the first 2-3 arising from the base, slender but prominent beneath, shallowly depressed above, arched; midrib prominent beneath, obscure and depressed or sometimes evident and elevated above; tertiary nerves densely subreticulate, evident beneath, obscure above; petiole 6-12 mm long, c. 3 mm ø, stout. Panicles to 20 cm long, terminal or ramiflorous, borne densely along the twigs, slender, laxly branched; branchlets to 2 cm long, unbranched, bearing to 6 secund flowers. Flower bud to 5 by 3 mm, ovoid; sepals ovate-lanceolate, fimbriate, acuminate, the outer 2 somewhat larger, sometimes obtuse; petals pale yellow. Stamens 15, filaments dilated at base, tapering; appendages very slender, 4-5 times as long as subglobose anthers. Ovary and stylopodium hour-glass-shaped, the latter somewhat the larger, with intervening frequently puberulent constriction; style columnar, shorter than ovary. Fruit pedicel to 1 mm long, short. Sepals to 2.5 by 0.5 cm but usually shorter than nut (variable, even on one tree), unequal to subequal, spatulate to ovate-acuminate, thickened and saccate at base; nut to 20 by 12 mm, ovoid, prominently apiculate.
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Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
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Photosynthetic pathway c3

Environment

Very local, common in two valleys east of the Keledong Saiong range.
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Hardiness (USDA) 9-12

Usage

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Cultivation

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Distribution

Hopea apiculata world distribution map, present in India, Myanmar, Malaysia, and Thailand

Conservation status

Hopea apiculata threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:320842-1
WFO ID wfo-0000724481
COL ID 3MJCF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Hopea apiculata