Shorea contorta S.Vidal

White lauan (en)

Species

Angiosperms > Malvales > Dipterocarpaceae > Shorea

Characteristics

Medium-sized, sometimes large evergreen V-fissured buttressed tree. Panicle, parts of petals exposed in bud, ovary and leaf buds densely persistently pale brown puberulent, twigs, petioles and calyx outside caducously so. Twig c. 2 mm ø apically, terete or +-ribbed; stipule scars short, descending. Leaf buds to 6 by 3 mm, lanceolate; stipules fugaceous. Leaves 9-29 by 5.5-11 cm, ovate to lanceolate, thinly coriaceous; base subequal, obtuse or rarely cordate (subpeltate in young trees); apex broadly to 1 cm long acuminate; nerves 5-8(-9) pairs, slender but prominent beneath, distant, arched, ± applanate above as also the midrib, set at 45°-70°; tertiary nerves densely scalariform, slender, hardly elevated on either surface; petioles 20-33 mm long, slender. Panicles to 22 cm long (if terminal), to 14 cm long (if axillary), singly or doubly branched; branchlets to 4 cm long. Flower buds to 8 by 4 mm, ovoid, lanceolate; sepals ovate, obtuse, the outer 3 somewhat the larger; petals broadly oblong-elliptic, acute; stamens 15, subequal; filaments short, broad, applanate; anther cells linear, subequal, pro-longed into prominent distal horns c. 1/2 their length and as long as the stout appendage; style columnar, c. thrice length of ovary. Fruit shortly pedicellate; 3 longer calyx lobes to 12 by 3 cm, spatulate, obtuse, tapering to c. 8 mm wide at the incrassate saccate base; 2 shorter lobes to 9 by 1.5 cm, otherwise similar; nut to 35 by 15 mm, narrowly ovoid, apiculate.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 45.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Common, often semi-gregarious in more or less seasonal Semi-evergreen Dipterocarp forests in the lowlands, uncommon in everwet areas.
More
Forests; common in more or less seasonal, evergreen rain forest at elevations up to 700 metres.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Uses material tea wood
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings. Seeds needs soaking.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Shorea contorta unspecified picture

Distribution

Shorea contorta world distribution map, present in Philippines

Conservation status

Shorea contorta threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:321244-1
WFO ID wfo-0000496866
COL ID 4X4VF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Pentacme paucinervis Pentacme mindanensis Shorea contorta Pentacme contorta