Anisoptera laevis Ridl.

Species

Angiosperms > Malvales > Dipterocarpaceae > Anisoptera

Characteristics

Bud and twig apex +-densely pale brown to rust lepidote at first, becoming glabrous. Young twig c. 1.5 mm ø, slender, terete, becoming rugose on drying; later smooth or minutely striated. Bud 3-7 by 2 mm, compressed, hastate to ovate, acute. Stipule c. 10 by 3 mm, glabrous, hastate to linear. Leaves 7-11 by 3-4 cm, oblong to +-obovate, not bullate, epilose, rust-brown lepidote beneath; base obtuse or broadly cuneate; acumen to 1 cm long; nerves 10-14 pairs, at 50°-60°, slender, curved; petiole 1.5-2 cm long. Panicle to 12 cm long, terminal or axillary, lax, pendent, angular, slender, densely shortly pale brown puberulent to glabrous; alternately doubly branched, branchlets short, bearing to 11 flowers; bracteoles to 2.5 mm long, lanceolate, shortly pubescent. Bud to 2 mm long, subglobose. Calyx cupped at base; sepals subequal, valvate, shortly grey-brown puberulent outside; 2 longer lobes slightly broader, obtuse, 3 shorter acute, acuminate. Petals small, elliptic-oblong, glabrous, pale yellow. Stamens 15, subequal, as long as or slightly longer than the style; filaments short, tapering to the anther; anther narrowly oblong, the inner cells smaller than the outer; appendage to connective short, erect. Ovary encased in the base of the calyx, covered by a discoid stylopodium, crowned by a filiform glabrous style; stigma 3-lobed. Fruit calyx glabrous at maturity; tube 1.2-1.5 cm ø, globose, to 8 mm ø at the neck; 2 longer lobes to 15 by 1.5 cm, spatulate, obtuse, c. 5 mm broad at base; 3 short lobes to 1.5 cm long, c. 3 mm broad at base, hastate to linear, margin slightly revolute. Nut apex disc-like, shortly pubescent, flat; style remnant 5-8 mm long, filiform, very slender.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
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Flower color
Blooming months -
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

A canopy tree in lowland forest. Widespread and often common in inland lowland and hill forests at elevations up to 900 metres.
More
Inland lowland and hill forests to 900 m; widespread and often common.
Light -
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Hardiness (USDA) 9-12

Usage

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

Cultivation

Can be grown by seedlings.
Mode seedlings
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Productivity -

Distribution

Anisoptera laevis world distribution map, present in Brunei Darussalam, Indonesia, India, Malaysia, Singapore, and Thailand

Conservation status

Anisoptera laevis threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:320555-1
WFO ID wfo-0000537356
COL ID 66QYR
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Anisoptera laevis