Knema linguiformis (J.Sinclair) W.j.de Wilde

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Tree 6-25 m. Twigs 1-2 mm diameter, sometimes ± angled, at first with pale brown to dark rusty woolly hairs 0.2-0.5 mm long, late glabrescent; bark pale, yellowish to brown, ± striate, not tending to crack or flake. Leaves chartaceous or thinly coriaceous, oblong to lanceolate, 5-15 by 1.5—5(—6) cm, base attenuate to rounded, apex acute to obtuse, rarely subacuminate; drying greenish above; lower surface greenish grey, minutely papillate, early glabrescent; dots absent; midrib raised above; nerves 8-20 pairs, raised above; venation distinct above; petiole late glabrescent, 6-15 by 1-1.5 mm. Inflorescences: sessile, brachyblast simple or forked, 2-5 mm long; in male 5-20-flowered, female 2-10-flowered; flowers with persistent (yellowish) rusty hairs (0.1-)0.2-0.4 mm long; perianth 3-(or 4-)lobed, pink inside. Male flowers: pedicel 5.5-13 mm long, bracteole persistent or late caducous, about median; buds depressed globose to broadly obovoid, rounded or obtusely trigonous in cross section, 3-6 mm in diameter, cleft c. 3/4, lobes 0.5-1 mm thick; staminal disc subcircular or obtusely trigonous, flat, 1.5-3 mm diameter; anthers 19-25 (i.e., 40-50 closely appressed thecae), entirely sessile, suberect to oblique, hidden under the staminal disc, 0.2-0.3 mm; androphore tapering, 0.5-2 mm long. Female flowers: pedicel 5-8 mm long, bracteole about median; buds depressed globose, ellipsoid, or obovoid, 4-6 by 4-5.5 mm, cleft 1/2-2/3, lobes 0.7-1 mm thick; ovary (broadly) ovoid, 2-3 by 1.5-2.5 mm; stigma subsessile, ± flat, subcircular, faintly 24obed and each lobe again 4-10(-20)-lobulate. Fruits 1-3 per infructescence, ellipsoid to ovoid, at base often contracted to 5 mm long, 3.5-4 by 2-2.5 cm, at first with minute indumentum, glabrescent; dry pericarp 2 mm thick; fruiting pedicel 5-8 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

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Cultivation

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Distribution

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

Conservation status

Knema linguiformis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:585883-1
WFO ID wfo-0000356795
COL ID 6NM93
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Knema linguiformis