Shorea amplexicaulis P.S.Ashton

Species

Angiosperms > Malvales > Dipterocarpaceae > Shorea

Characteristics

Medium-sized to large tree. All parts, including stipule (both surfaces), caducous or persistently pale buff to golden pubescent. Twig to 3 by 2 mm ø apically, slightly compressed when young, slender, becoming terete, glabrous, smooth; stipule scars c. 0.5 mm thick, horizontal, ± amplexicaul. Bud 10-15 by 3-5 mm, hastate, obtuse. Stipule to 25 by 8 mm, hastate, subacute, subpersistent. Leaves 11-21 by 5-8 cm, elliptic, coriaceous; base cuneate; acumen to 1 cm long; nerves 9-12 pairs, curved, at 50°-70°, prominent beneath; tertiary nerves distinct, remotely scalariform; midrib prominent and terete beneath, ± applanate above; petiole 15-2.5 cm long. Panicle to 24 cm long, terminal or axillary, lax, slender, compressed; regularly singly branched, branchlets to 10 cm long, bearing to 11 distichous flowers; bracts to 13 by 8 mm, lanceolate, acute, glabrous, fugaceous; bracteoles to 11 by 5 mm, oblong, obtuse, glabrescent or persistently puberulent outside, glabrous within, subpersistent. Flower bud to 10 by 3.5 mm, lanceolate, obtuse. Calyx densely shortly pale grey pubescent outside, glabrous within; lobes subequal, narrowly deltoid, obtuse, slightly expanded at base. Petals pale yellow, narrowly lanceolate, subacute, shortly pubescent on parts exposed in bud. Stamens 15, the 5 inner slightly longest; filaments broad, united in a ring, tapering abruptly beneath the narrowly oblong anthers; appendage to connective over twice as long as anther, not reflexed. Ovary ovoid, somewhat longer than ovary; no distinct stylopodium. Fruit impressed at base. Calyx puberulent or glabrescent; 3 longer lobes to 18 by 3 cm, oblong-spatulate, obtuse, to 2 cm broad above the to 1.6 by 2.2 cm broadly ovate saccate thickened base; 2 shorter lobes to 13 by 0.8 cm, similar at base. Nut to 3.7 by 2.5 cm, broadly ovoid, persistently evenly densely gold-buff pubescent; style remnant short, acute.
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A tree.
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Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
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Mature height (meter) 0.13 - 1.3
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Photosynthetic pathway c3

Environment

Widespread, often common, on clay soils, especially ridges, from sea level to 700 m.
More
It is a tropical plant.
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Usage

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Edible nuts
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Cultivation

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Distribution

Shorea amplexicaulis world distribution map, present in Brunei Darussalam

Conservation status

Shorea amplexicaulis threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:321196-1
WFO ID wfo-0000500375
COL ID 4X4TV
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Shorea amplexicaulis