Allantospermum borneense Foreman

Species

Angiosperms > Malpighiales > Irvingiaceae > Allantospermum

Characteristics

Tree, up to 30 m by 50 cm ø; buttresses short to steep, up to 75 cm high, sometimes with warts. Stipules only present in leaf-buds, narrowly elliptic-oblong, pointed, c. 1 cm ( FORMAN Kew Bull. 19 1965 517 t. 1 ). Leaves glossy above, dull beneath, elliptic with cuneate to broadly rounded base and acuminate, blunt apex, 7-16 by 3-8 cm; nerves 5-10 pairs, arching upwards and meeting in a not very conspicuous intramarginal vein; veins +-transverse, netted; midrib and nerves prominent, veins slightly prominent on both surfaces; petiole dark-coloured, grooved above, c. 1 cm. Panicles lax, up to 7 cm. Bracts early caducous, leaving an obvious scar. Pedicels 7-9 mm. Sepals boat-shaped, reflexed at anthesis, 3-4 by 2-3 mm, caducous when the fruit matures. Petals elliptic to obovate, 4-5 by 2.5-3 mm, membranous, veined, reflexed at anthesis, caducous. Stamens up to 6 mm long, with versatile, c. 1 mm long latrorse-introrse anthers. Disk c. 1.5 mm ø and 0.5 mm thick. Ovary 5-lobed, c. 1.5 by 2 mm; style filiform, c. 3(-4) mm; stigma capitellate. Capsule broadly ellipsoidal, 5-lobed, 2.5-5 cm long, abruptly (up to 3 mm) acuminate at apex. Seeds cylindrical, often slightly curved, 2-2.5 by 4-6 mm.
Life form -
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
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Mature width (meter) -
Mature height (meter) 30.0
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

Obviously not rare in primary lowland rain-forest.
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Hardiness (USDA) 9-12

Usage

Uses material
Edible -
Therapeutic use -
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Cultivation

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Distribution

Allantospermum borneense world distribution map, present in Brunei Darussalam, India, and Malaysia

Identifiers

LSID urn:lsid:ipni.org:names:442125-1
WFO ID wfo-0000525995
COL ID BTBF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Allantospermum borneense

Lower taxons

Allantospermum borneense subsp. borneense Allantospermum borneense subsp. rostratum