Knema psilantha W.j.de Wilde

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Tree 5-10 m. Twigs 3-5 mm diameter, at first with woolly bright brown to yellowish hairs 0.5-1 mm long, soon glabrescent; bark striate or ridged, lower down cracking and flaking. Leaves thinly coriaceous, lanceolate, 20-50 by 3.5-9.5 cm, apex (narrowly) acute, base obtuse or (broadly) rounded; drying greenish brown above; lower surface glabrous, inconspicuously finely papillate; dots absent; midrib raised above; nerves 30-35 pairs, raised above; venation raised, distinct or not; petiole 5-15 by 3-5 mm, late glabrescent. Inflorescences: sessile, brachyblast simple or ± warted, 2-5 mm diameter; in male 5-25-flowered, female 1-5-flowered; flowers with pale brown hairs 0.5-0.7 mm long, early glabrescent in the upper half or more; perianth 3-lobed, red inside. Male flowers: pedicel 2-3 mm long, bracteole subpersistent, at or above the middle; buds ellipsoid-obovoid, 4.5-5 by 3-3.5 mm, cleft 3/4-4/5, lobes 0.5 mm thick; staminal disc circular, ± flat, 1.5 mm diameter; anthers 6-9, each 0.5 mm long, stiped for 0.5-0.7 mm, ± horizontal, not touching; androphore cylindrical, 1-1.2 mm long. Female flowers: pedicel 1-2 mm long, bracteole ± caducous, median; buds much larger than in male flowers, ovoid, 8-9 by 5-5.5 mm, cleft c. 1/2, lobes 0.5 mm thick; ovary subglobose, 4.5 by 5 mm, stigma subsessile, ± 2-lobed and each lobe again 5-or 6-lobulate or serrate. Fruits 1-3 per infructescence, subellipsoid, apex obtusish, base broadly rounded, 2.5-3 by 2 cm, with rough yellowish brown hairs 1 mm long, sometimes partly glabrescent; dry pericarp 3 mm thick; fruiting pedicel 2 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 - 10.0
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Hardiness (USDA) 10-12

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Cultivation

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Distribution

Knema psilantha world distribution map, present in Indonesia and Malaysia

Conservation status

Knema psilantha threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:585917-1
WFO ID wfo-0000356818
COL ID 6NM9Z
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Knema psilantha