Knema piriformis W.j.de Wilde

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Tree 6-12 m. Twigs sometimes ± angular, 1.5-3 mm diameter, at first with hairs 0.1 (-0.2) mm long, glabrescent; bark smooth or finely striate, not tending to crack or flake. Leaves thinly coriaceous, oblong or lanceolate, 15-25 by 3-7 cm, apex acute(-acumi-nate), base rounded to attenuate; drying olivaceous or brown, with scattered hair scars above; lower surface at first with soft greyish stellate hairs 0.1 mm long, early or late glabrescent, sometimes mixed with sparse larger yellow-brown hairs, early shed and leaving hair scars; dots absent; midrib ± flat above; nerves 20-25 pairs, ± flat; venation faint or distinct; petiole 8-15 by 1.5-3 mm. Inflorescences: sessile, brachyblast simple or forked, to 6 mm long; in male 5-10-flowered; flowers with hairs 0.1-0.2 mm long, or less; perianth 3-lobed, yellow (?) inside. Male flowers: pedicel 2-5 mm long, bracteole ± caducous, at or above the middle; buds obovoid, 4-5 by 3-4 mm, tapering in the lower half, cleft l/2(-2/3), lobes 0.4-0.6 mm thick; staminal disc circular, flat, 1.5-2 mm diameter; anthers 11 or 12, just stiped, almost horizontal to oblique, 0.3 mm long, not touching; androphore slender, 1.5-2.2 mm long. Female flowers not seen. Fruits 1 or 2 per infructescence, ovoid or ellipsoid, faintly ridged, apex subobtuse, base subtruncate, 2.4-2.6 by 1.5-1.7 cm, with grey hairs 0.1 mm long; dry pericarp 2 mm thick; fruiting pedicel 6 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 - 12.0
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Hardiness (USDA) 10-12

Usage

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Cultivation

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Distribution

Knema piriformis world distribution map, present in Malaysia

Conservation status

Knema piriformis threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:585913-1
WFO ID wfo-0000356814
COL ID 6NLXX
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Knema piriformis