Hopea altocollina P.S.Ashton

Species

Angiosperms > Malvales > Dipterocarpaceae > Hopea

Characteristics

Tall tree with prominent thin buttresses and pale thinly flaking bark. Sepals and petals sericeous outside; parts otherwise glabrous. Twigs c. 2 mm ø apically, terete; stipule scars short, obscure. Bud to 1 by 1 mm, subglobose, small. Stipule unknown. Leaves 7-10 by 3-4.5 cm, lanceolate; base obtuse, appearing cuneate owing to the prominently revolute margin; acumen to 1 cm long, caudate; nervation dryobalanoid, nerves c. 16 pairs, +-obscure, with short secondaries; midrib slender, slightly elevated on both surfaces; petiole 10-13 mm long, somewhat thickened distally and geniculate, slender. Panicle to 8 cm long, terminal or axillary, frequently 2-axillary, terete, glabrous, singly branched. Flower bud to 4 by 3 mm. Sepals broadly ovate, acute, the inner 3 broader and thinner. Stamens 15; filaments rather slender, lorate at base, tapering medially; anthers ellipsoid; appendages c. 2 x length of anthers, very slender. Ovary and stylopodium cylindrical, punctate at the rounded apex; style short. Fruit entirely glabrous. Pedicel to 2 mm long. 2 longer calyx lobes to 4.5 by 0.8 cm, spatulate, obtuse, 2-3 mm broad above the 6 by 3 mm narrowly ovate thickened saccate base; 3 shorter lobes to 4 by 4 mm, suborbicular, obtuse, shorter than nut. Nut to 7 by 5 mm, ovoid; style remnant to 2 mm long, slender.
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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 frequent, clay rich soils, hillsides and spurs, 800-1000 m.
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Hardiness (USDA) 10-12

Usage

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Cultivation

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Distribution

Hopea altocollina world distribution map, present in Malaysia

Conservation status

Hopea altocollina threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:320838-1
WFO ID wfo-0000724478
COL ID 3MJCB
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Hopea altocollina