Shorea ladiana P.S.Ashton

Species

Angiosperms > Malvales > Dipterocarpaceae > Shorea

Characteristics

Small to medium-sized tree. Young twig and petioles shortly puberulent, bud and panicle grey tomentose, vegetative parts otherwise glabrous. Twig 1.5-2 mm ø apically, terete, much branched, smooth to rugulose; stipule scars small, slightly descending, obscure. Bud c. 1 by 0.5 mm, small, conical. Stipule unknown. Leaves 10-14 by 4.5-7.5 cm, coriaceous, lustrous, ovate; base subequal to equal, obtuse or broadly cuneate; acumen 1-1.5 cm long; nerves 5-6 pairs, prominent beneath, well spaced, arched, set at c. 40°-50°; tertiary nerves slender, indistinct, densely scalariform, at 90°; margin usually narrowly revolute; petiole 1-2.2 cm long. Panicle to 15 cm long, terminal or to 2-axillary, somewhat compressed, straight, lax, shortly persistently pale cream-grey pubescent; singly or doubly branched; branchlets to 8 mm long, short, zigzag, bearing to 9 close secund flowers; bracteoles to 4.5 mm long, ovate-deltoid, acute, shortly pubescent, fugaceous. Flower bud to 1.5 mm ø, globose (only young bud known). Calyx densely puberulent outside, glabrous within; sepals ovate, subequal. Petals broadly elliptic. Stamens 30-35; filaments short, tapering; anthers oblong, the outer sacs the larger, shortly barbate apically; appendage to connective longer than anther, long barbate. Ovary and stylopodium ovoid, densely pubescent, with short glabrous style. Fruit pedicel to 3 mm long, slender, puberulent. Calyx shorter than nut, the 5 equal lobes c. 8 mm long and broad, broadly ovate, puberulent, subacute, thickened, shallowly saccate, closely adpressed to the nut. Nut to 1.7 by 1.4 cm, obovoid-globose, densely shortly buff pubescent, abruptly tapering to the c. 1 mm long narrow acute style remnant.
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Growth form tree
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Sexuality hermaphrodite
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Environment

Local, deep yellow sandy soils in mixed Dipterocarp forest on low hills to 300 m.
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Hardiness (USDA) 10-12

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Cultivation

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Distribution

Shorea ladiana world distribution map, present in Brunei Darussalam and Malaysia

Conservation status

Shorea ladiana threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:321321-1
WFO ID wfo-0000500628
COL ID 4X4XS
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Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Shorea ladiana