Shorea subcylindrica Slooten

Species

Angiosperms > Malvales > Dipterocarpaceae > Shorea

Characteristics

Small to medium-sized tree. Young twigs, bud, stipules outside (subglabrous within) and petiole pale brown frequently somewhat flocculent caducous pubescent. Twig c. 2 mm ø apically, terete or occasionally compressed, straight, minutely fissured; stipule scars short, horizontal. Bud c. 3 by 2 mm, ovoid, obtuse. Stipule to 10 by 4 mm, lanceolate, subacute, fugaceous. Leaves 9-24 by 4-12 cm, relatively large, narrowly elliptic or ovate to lanceolate, coriaceous, lustrous; base cuneate, rarely obtuse; acumen to 1.5 cm long, slender to caudate; nerves 8-11 pairs, prominent beneath, evident above and sunken in shallow furrows as also the midrib, oblique, at 35°-50°; midrib prominent on both surfaces; tertiary nerves subreticulate, the scalariform elements set at 90° to the midrib; petiole 9-18 mm long. Panicle to 12 cm long, terminal or axillary, terete, lax, +-densely somewhat flocculent buff pubescent, partially caducous; doubly or trebly branched, branchlets bearing to 5 ± secund flowers; bracteoles c. 1 mm long, minute, deltoid, acute, fugaceous. Flower bud to 3 by 1 mm, small, fusiform. Sepals ovate, pubescent on parts exposed in bud; 3 outer acute, 2 inner acuminate, thinner towards margin than outer 3. Petals cream, narrowly lanceolate, sparsely pubescent on parts exposed in bud, imbricate at base after opening and thus forming a cup, spreading and contorted apically. Stamens 15, in 3 unequal verticils; filaments compressed at base, tapering and filiform below the subglobose anthers; appendage to connective as long as or somewhat longer than anther, slender, glabrous, exceeding style apex. Ovary ovoid, sericeous; style columnar, stout, somewhat shorter than ovary, sericeous in the basal 1/2. Fruit pedicel c. 1 mm long, short. Calyx glabrescent; lobes to 12 by 9 mm, subequal, ovate, acute, relatively thin, hardly saccate. Nut to 23 by 16 mm, ellipsoid, acute, densely shortly pale buff pubescent.
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Sexuality hermaphrodite
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Environment

Local, on leached clay soils on undulating land in mixed Dipterocarp forest.
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Cultivation

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Distribution

Shorea subcylindrica world distribution map, present in Malaysia

Conservation status

Shorea subcylindrica threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:321460-1
WFO ID wfo-0000499372
COL ID 4X53R
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Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Shorea subcylindrica