Shorea retusa Meijer

Species

Angiosperms > Malvales > Dipterocarpaceae > Shorea

Characteristics

Small or medium-sized tree. Young parts greyish sericeous, glabrescent except on buds and stipules outside. Twig c. 1 mm ø apically, terete, much branched, smooth; stipule scars pale, short, horizontal. Bud to 3 by 2 mm, ellipsoid, obtuse. Stipule to 7 by 3 mm, elliptic, obtuse, caducous. Leaves 3-9 by 1.5-5 cm, small, elliptic, coriaceous, lustrous; base cuneate; apex retuse; nerves 7-10 pairs, slender, hardly raised beneath, at 40°-60°; tertiary nerves slender, obscure, densely scalariform; midrib prominent beneath, depressed above; petiole 6-9 mm long, short. Panicle to 10 cm long, terminal or axillary, terete, caducous buff sericeous; singly, or doubly if terminal, branched, branchlets bearing to 7 +-distichous flowers; bracteoles to 3 by 2 mm, elliptic, obtuse, pubescent. Flower buds to 8 by 3 mm, lanceolate. Sepals densely pubescent on parts exposed in bud; outer 3 ovate, acute; inner 2 shorter, narrower, thinner towards margin than outer 3, fimbriate distally, flanged at base. Petals pale yellow, lanceolate, fimbriate, pubescent on parts exposed in bud. Stamens 15, in 3 unequal verticils; filaments compressed, slender, tapering; anthers subglobose, the inner 5 much longer than the outer 5; appendage to connective slender, c. 4 x length of anther on inner stamens, c. 2 x on medium stamens, about same length on outer stamens, becoming reflexed at anthesis. Ovary and stylopodium narrowly conical, shortly densely buff sericeous, crowned by a short glabrous style. Fruit pedicel to 1 mm long. Calyx bud sericeous, caducous except at base; 3 longer calyx lobes to 10 by 1.8 cm, spatulate, obtuse, c. 4 mm broad above the to 7 by 6 mm ovate saccate thickened base; 3 shorter lobes to 5.5 by 0.4 cm, lorate, obtuse, similar at base. Nut to 13 by 2 mm, ovoid; stylopodium to 3 mm long.
Life form -
Growth form tree
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Local on skeletal podsols in heath forest on coastal hills.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Shorea retusa world distribution map, present in Malaysia

Conservation status

Shorea retusa threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:321420-1
WFO ID wfo-0000499362
COL ID 4X52K
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Shorea retusa