Parashorea macrophylla Wyatt-sm. ex P.S.Ashton

White seraya (en)

Species

Angiosperms > Malvales > Dipterocarpaceae > Parashorea

Characteristics

Young twig, leaf bud, stipule (outside, glabrous within), petiole and inflorescence shortly densely evenly persistently pale ocherous tomentose. Twig to 12 by 5 mm ø apically, compressed, becoming terete, smooth, amplexicaul; leaf scars large, elliptic, conspicuous. Bud to 9 by 0.8 cm, linear, acute, pale cream-brown. Stipule to 15 by 2.5 cm, linear, subacute, caducous. Leaves alternate, 30-50 by 16-24 cm, subchartaceous, oblong-elliptic, silvery to white below, base subcordate, apex obtuse or shortly acuminate; nerves 28-36 pairs, dense, straight, curved towards the margin, not silvery, with semi-persistent interneural plicate folds; tertiary nerves slender, densely scalariform, diagonal to nerves; midrib stout, rounded beneath, slightly raised above; petiole 3-5 cm long, terete. Panicle to 16 cm long, terminal or axillary, doubly or trebly branched; branches alternate, branchlets cymose; bracts to 4 by 2.5 cm, ovate, acute, cupped, amplexicaul, caducous, densely shortly tomentose out-side. Petals oblong, obtuse. Stamens subequal; filaments shfrrt, deltoid; anthers narrowly oblong, the inner pollen sacs somewhat the shorter; appendage prominent, tapering, c. 1/2 length of anther. Ovary conical, shortly pubescent, tapering into a prominent narrowly cylindrical stylopodium. Fruit subsessile; calyx puberulent (more densely so at base), glabrescent; 3 longer lobes to 22 by 1.8 cm, spatulate, brittle, subacute, tapering to 6 mm broad above the to 16 by 8 mm elliptic shallowly saccate base; fused at the base to form an up to 8 mm deep, to 1 cm broad, cup at the pedicel; 3 shorter lobes to 12 by 0.7 cm, linear, unequal, tapering to 3 mm above the to 5 mm broad and long more prominently saccate base. Nut to 2.5 by 1.2 cm, ellipsoid, densely buff tomentose; style remnant to 6 mm long, linear.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 40.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Moist, clay-rich soils. Mixed dipterocarp forest, growing on moist lower slopes and periodically flooded alluvium, along the inland rivers, on clay soils, at elevations up to 300 metres.
More
Moist clay rich soils in valleys and gulleys, on and near river banks in inland areas, locally abundant; to 600 m.
A tropical plant.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 10-12

Usage

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

Cultivation

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

Images

Parashorea macrophylla unspecified picture

Distribution

Parashorea macrophylla world distribution map, present in Brunei Darussalam and Malaysia

Conservation status

Parashorea macrophylla threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:321142-1
WFO ID wfo-0000396697
COL ID 4DC37
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Parashorea macrophylla