Knema plumulosa J.Sinclair

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Tree 5-15 m. Twigs 3-5 mm diameter, at first with dense rusty lanose hairs 2-4 mm long, glabrescent; bark grey-brown, smooth or finely striate, not tending to crack, incidentally minutely flaking. Leaves coriaceous, oblong to lanceolate, 15—35(—45) by 2.5-8(-9) cm, apex acute(-acuminate), base rounded to cuneate; drying dull greenish brown above; lower surface (grey-)brown, at first with dense indumentum, glabrescent; dots absent; midrib raised above; nerves 12-23 pairs, raised; venation distinct; petiole 10-25 by 2-4 mm, late glabrescent. Inflorescences: peduncle to 3 mm long, brachyblast simple or warted, to 10 mm long; in male (3-)5-10-flowered, female 1-5-flowered; flowers with dense hairs 1.5-2.5 mm long; perianth 3-lobed, creamy, greenish or pinkish (?) inside. Male flowers: pedicel 5-12 mm long, bracteole subpersistent, subapical; buds depressed globose to broadly obovoid, 4.5-5.5 by 5-7 mm, cleft 3/4-4/5, lobes 0.3-0.4 mm thick; staminal disc convex or mammillate, circular, 2.5-3.5 mm diameter; anthers 12-15, horizontal, 0.5-0.7 mm, shortly stiped, not touching; androphore (0.5-)1-2 mm long, clasped by an annular disc 1 mm high at the base of the perianth, on which the staminal disc rests. Female flowers: pedicel 2-6 mm, bracteole towards the apex; buds obovoid, 7-9 by 7 mm, cleft over over halfway, lobes 0.4 mm thick; ovary subglobose, 2.5 mm diameter, with a conspicuous disc around the base; stigma sessile, 2-lobed and each lobe again (5-)6-7-lobulate or serrated. Fruits 1-3 per inflorescence, ellipsoid, 3-3.5 by 2 cm, with coarse rusty hairs 2 mm long; dry pericarp 2-3 mm thick; fruiting pedicel 3-6 mm long; perianth persistent under the fruit.
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Growth form tree
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Foliage retention evergreen
Sexuality dioecy
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Mature height (meter) 5.0 - 15.0
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Environment

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Hardiness (USDA) 10-12

Usage

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Cultivation

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Distribution

Knema plumulosa world distribution map, present in Malaysia

Conservation status

Knema plumulosa threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:585914-1
WFO ID wfo-0000356825
COL ID 6NLY9
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Knema plumulosa