Shorea obscura Meijer

Species

Angiosperms > Malvales > Dipterocarpaceae > Shorea

Characteristics

Large tree. Leaf nervation beneath, petiole, twig, panicle, bud and stipule shortly evenly pale brown pubescent, almost entirely caducous except on panicle, bud and stipule. Twig c. 1.5-2 mm ø apically, terete, slender, becoming glabrous; stipule scars short, pale, obscure. Bud 2-4 by 1.5-2.5 mm, ovoid to falcate. Stipule to 7 by 2.5 mm, oblong, acute, caducous. Leaves 7-12 by 2.5-5 cm, ovate-lanceolate, coriaceous, cream lepidote beneath in mature trees, base cuneate; acumen to 1 cm long, narrow; with or without small pore-like axillary domatia; nerves 7-9 pairs, curved, rather prominent, at 30°-45°, tertiary nerves slender, scalariform at 90°; midrib applanate or slightly raised above; petiole 1.2-2 cm long, slender. Panicle to 12 cm long, terminal or axillary, ± terete; singly branched, branchlets to 1.5 cm long bearing to 5 secund flowers; bracteoles to 3 mm long, ovate-ellip-tic, acute, puberulent, fugaceous. Flower bud to 6 by 2 mm, lanceolate. Calyx shortly pubescent outside, glabrous within; lobes ovate, acute, the inner 2 somewhat thinner than the outer 3. Petals bright pink, cream at margin, linear, pubescent outside, puberulent within. Stamens 35-45; filaments compressed at base, tapering, glabrous; anthers oblong-elliptic, the inner sacs shorter than the outer; appendage to connective almost as long as anther, stout, setose. Ovary and stylopodium ovoid, pubescent but for the glabrous base, tapering into the short glabrous style. Fruit calyx shortly sparsely caducously cream pubescent; 3 longer lobes to 10 by 2 cm, spatulate, obtuse, to 5 mm broad above the c. 1 mm broad saccate base; 2 shorter lobes to 5 by 0.5 cm, subacute, narrowly oblong, similar at base. Nut to 12 by 9 mm, globose to ellipsoid, shortly buff pubescent, abruptly apiculate.
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Sexuality hermaphrodite
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Environment

Local, skeletal shale soils on ridges and steep hillsides, typically at 600-800 m, but rarely below and to 1400 m.
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Hardiness (USDA) 10-12

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Cultivation

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Distribution

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

Conservation status

Shorea obscura threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:321376-1
WFO ID wfo-0000500508
COL ID 4X4ZC
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Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Shorea obscura