Knema percoriacea J.Sinclair

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Tree 5-25 m. Twigs sometimes faintly angled, 3-6 mm diameter, at first with pale to dark brown hairs 0.5-2 mm long, late glabrescent; bark smooth or striate, then usually slightly to distincly longitudinally cracking, and flaking. Leaves chartaceous or coriaceous, (oblong-)lanceolate, 12-40 by 2.5-9(-15) cm, apex subobtuse to acute(-acuminate), base attenuate to rounded, drying olivaceous or brown above, lower surface glabrous, not or but little papillate, with scattered hair scars (lens!); dots absent; midrib much raised above; nerves 15-25 pairs, raised above; venation distinct; petiole sometimes ± pulvinate, late glabrescent, 7-25 by 3-8 mm. Inflorescences: peduncle up to 2 mm long, brachyblast simple, warted, or 2-furcate, up to 15 mm long; in male 10-20-flowered, female up to 15-flowered; flowers with light brown or dark brown hairs 0.5-2 mm long, sometimes partly deciduous; perianth 3-lobed, red inside. Male flowers: pedicel 3-4.5 mm long, bracteole persistent, at or above the middle; buds depressed (globose-)obovoid, (3.5-) 4-5.5 by (3.5-)4-5.5 mm, cleft 2/3-3/4, lobes 0.5(-l) mm thick; staminal disc circular or subtriangular, flat, 2-2.5 mm diameter; anthers 10-18, shortly stiped or subsessile, half-erect or curved upward, 0.3-1 mm long, not or but little touching; androphore 1-1.5 mm, finely striate. Female flowers: pedicel 2-4 mm long, bracteole subapical; buds ovoid or ellipsoid, 6.5-8(-9) by 5-7 mm, cleft slightly over halfway, lobes 0.5-0.7 mm thick; ovary subglobose, 3.5-4 mm diameter, stigma sessile, 2-lobed and each lobe again 8-10-lobulate or serrate. Fruits 1 or 2 per infructescence, (broadly) ellipsoid, sometimes slightly flattened, 3-4.5(-5) by 2.5-3.5(-4.5) cm, with rusty hairs 1-2 mm long; dry pericarp 4 mm thick; fruiting pedicel 2-3 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) 5.0 - 25.0
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Hardiness (USDA) 10-12

Usage

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Cultivation

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Distribution

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

Identifiers

LSID urn:lsid:ipni.org:names:585909-1
WFO ID wfo-0000356817
COL ID 6NLYC
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Knema percoriacea