Knema membranifolia H.J.P.Winkl.

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Tree 6-25 m. Twigs sometimes bluntly 2-or 3-angular, 1.5-3 mm diameter, at first with dense rusty hairs 1 mm long, glabrescent; bark pale brown to yellowish, striate, when old tending to crack or flake. Leaves membranous or thinly coriaceous, oblong to lanceolate, 12-28 by 3.5-8.5 cm, base cuneate-attenuate to subobtuse, apex obtuse to acute-acuminate; drying pale brown or olivaceous above; lower surface early glabrescent, greenish grey; dots absent; midrib stout, prominent above; nerves 12-17 pairs, hardly raised above; venation lax or fine, distinct; petiole 15-25 by 1.5-3 mm. Inflorescences: sessile, brachyblast simple, wart-like, or up to 2-4-tubercled, to 10 mm long; in male 5-30-flowered, female 1-4-flowered; flowers at first with dense hairs 0.5-1 mm long, early glabrescent, or with only a few scattered hairs left; perianth 3-lobed, red (?) inside. Male flowers: pedicel 6-9 mm long, bracteole caducous, about median; buds depressed globose, obtusely trigonous in cross section, 3.5-5 by 5-7(-8) mm, cleft 3/4-4/5, lobes 0.7-1 mm thick; staminal disc flat to convex, not mammillate, circular, 3-3.5 mm diameter; anthers 19 or 20(-23?), ± stiped, horizontal, 0.7-1 mm, not touching; androphore tapering, 0.7-1 mm long. Female flowers: pedicel 1-4 mm long, bracteole above the middle; buds subglobose or broadly obovoid, 3.5-4.5 mm diameter, cleft c. 3/4; ovary subglobose to ovoid, 1.5-2 mm long; stigma ± sessile, with 2 main lobes and each lobe again deeply (2-)4-7-lobulate. Fruits 1-3 per infructescence, ellipsoid or obovoid, 2.5-4.5 by 2-3.5 cm, at first with rusty indumentum, hairs c. 1 mm long, early glabrescent; dry pericarp glossy, 1.5-2 mm thick; fruiting pedicel 1-5 mm long.
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Growth form tree
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Foliage retention evergreen
Sexuality dioecy
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Mature height (meter) 6.0 - 25.0
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Hardiness (USDA) 10-12

Usage

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Cultivation

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Distribution

Knema membranifolia world distribution map, present in Brunei Darussalam, Indonesia, and Malaysia

Identifiers

LSID urn:lsid:ipni.org:names:585891-1
WFO ID wfo-0000356786
COL ID 6NM8N
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Knema membranifolia