Shorea patoiensis P.S.Ashton

Species

Angiosperms > Malvales > Dipterocarpaceae > Shorea

Characteristics

Medium-sized tree. Vegetative parts glabrous but for the fimbriate stipule and bud scales and frequently a white waxy powder on young buds and twigs in mature trees. Twig c. 1 mm ø apically, slender, much branched in mature trees, terete, smooth or rugulose. Leaf bud c. 3 by 1 mm (to 4 by 2 mm in young trees), narrowly ovoid, obtuse with the bud scales conspicuously patent. Stipule c. 8 by 2 mm, glabrous but for margin, oblong, acute. Leaves 5-8 by 2-3.5 cm, ovate, chartaceous, frequently subfalcate; base ± broadly cuneate, decurrent for up to 1 mm at the petiole insertion; acumen c. 1 cm long, narrow; nerves 7-9 pairs, curved, set obliquely (35°-45°), slightly elevated above, slender but prominent beneath; tertiary nerves densely scalariform; petiole 7-10 mm long. Panicle to 9 cm long, terminal or axillary, rather short and compact, slender, terete, shortly persistently pale greyish brown pubescent; singly or doubly branched, branchlets to 1 cm long, bearing to 6 flowers; bracteoles minute, fugaceous. Flower bud to 3.5 by 1.5 mm, lanceolate, acute. Calyx densely reddish brown pubescent; lobes very small, suborbicular, obtuse, the inner 2 somewhat thinner, constricted at the base. Petals bright lemon-yellow, linear, imbricate and forming a cup at the base, twisted and spreading apically. Stamens 15, in inequal verticils; filaments rather short, broad at base, abruptly tapering and filiform distally; anther subglobose; appendage to connective as long as anther, shortly ciliate towards the apex, reaching almost to the style apex. Ovary ovoid, shortly pubescent; stylopodium cylindrical, pubescent; style short, glabrous. Fruit calyx shorter than nut, caducous yellowish buff pubescent, margin persistently fimbriate; lobes 3-5 mm long and broad, subequal, broadly ovate, +-adpressed to the base of the nut and united at the base to form a c. 5 mm ø cup. Nut to 15 by 8 mm, small, oblong-ellipsoid, striated, glabrescent at maturity, with a minute style remnant.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 35.0
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 forest at elevations up to 1,000 metres. Found on hillsides and ridges with sandy to clay soils, also often on limestone.
More
Local, on fertile clay rich soils on calcareous shales and volcanic rocks, hills below 500 m.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 10-12

Usage

Uses timber 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 -

Distribution

Shorea patoiensis world distribution map, present in Brunei Darussalam, Malaysia, and Saudi Arabia

Conservation status

Shorea patoiensis threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:321396-1
WFO ID wfo-0000500529
COL ID 4X4ZV
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Shorea patoiensis