Shorea pinanga Scheff.

Species

Angiosperms > Malvales > Dipterocarpaceae > Shorea

Characteristics

Medium-sized or large tree. Young twig, panicle, leaf bud, stipule and petiole shortly densely fuga-ceously to persistently gold-brown pubescent; sparsely so on leaf beneath. Twig 4-6 by 2-3 mm ø apically, compressed, becoming smooth; stipule scars to 3 mm long, to 1.5 mm thick at base, strongly falcate, descending. Bud to 10 by 4 mm, hastate, subacute, ^ usually hidden by stipules. Stipule to 6 by 1.5 £m glabrescent, hastate, subacute, somewhat persistent. Leaves 11-24 by 4-9 cm, elliptic to narrowly ovate, ± thinly coriaceous, with broadly cuneate to subcordate base and to 1.5 cm long deltoid acumen; nerves 10-20 pairs, slender, curved, at 50°-70° but to 90° at base; tertiary nerves densely scalariform, diagonal to nerves; midrib prominent and terete beneath, ± applanate and narrow above; petiole 1.5-2.3 cm long, slender. Panicle to 24 cm long, terminal or axillary, lax, compressed; singly branched, the branchlets long, bearing to 15 distichous flowers; bracts to 15 by 7 mm, lanceolate, acute, glabrous to pubescent, fugaceous; bracteoles to 10 by 8 mm, broadly ovate, acute, glabrous to pubescent, subpersistent. Flower bud to 10 by 3 mm, linear, subacute. Calyx glabrous or pubescent outside; lobes subequal, linear, subacute. Petals deep pink, hardly contorted, long, linear-lanceolate, sparsely pubescent on parts exposed in bud. Stamens 15, the innermost 5 slightly the longest; filaments broad, united in a ring round the ovary, tapering abruptly distally; appendage to connective many times length of anther, reaching to style apex. Ovary subglobose, surmounted by a long narrow style and stylopodium about twice its length, the latter 2 distended in the distal half; entirely glabrous. Fruit calyx glabrescent; 3 longer lobes to 28 by 3.5 cm, coriaceous, narrowly spatulate, narrowly obtuse, to 2.3 cm broad above the to 1.5 by 2.5 cm broadly ovate saccate thickened base; 2 shorter lobes to 17 by 1.2 cm, subequal, linear, similar at base. Nut to 2.3 cm long and broad, broadly ovoid, shortly evenly pale yellowish buff pubescent; style remnant to 2 mm long, slender, acute.
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A tree. It grows 50 m tall. The trunk can be 125 cm across. It has small buttresses. The leaves are simple and alternate. They are narrowly oval and 11-24 cm long by 4-9 cm wide. They are thinly leathery with 10-20 pairs of secondary veins. The flowers are yellowish-pink and 3 cm across. They are in groups in the axils of leaves and at the ends of branches. The fruit is a broadly oval nut 2.5 cm long. They are green to yellow or red with pale yellow hairs. There are 3 longer calyx lobes that are narrowly spoon shaped and 28 cm long by 3.5 cm wide. and then 2 shorter lobes.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 42.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

An upper canopy tree in undisturbed mixed dipterocarp forests at elevations up to 1,300 metres. Mostly found on ridges with leached clay to sandy clay soils.
More
It is a tropical plant. It grows in Kalimantan in lowland dipterocarp forest up to 700 m above sea level.
Clay-rich soils especially on ridges below 700 m; locally common.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses timber wood
Edible nuts
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seeds.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Shorea pinanga world distribution map, present in Brunei Darussalam

Conservation status

Shorea pinanga threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:321404-1
WFO ID wfo-0000500538
COL ID 4X525
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Shorea pinanga Shorea compressa