Knema stylosa (W.j.de Wilde) W.j.de Wilde

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Tree 8-20(-25) m. Twigs 2-3 mm diameter, at first with pale brown or grey-brown hairs 0.1 mm long or less, glabrescent; bark striate, not tending to crack or flake. Leaves thinly chartaceous, (elliptic-)oblong, 12-24 by 3.5-7 cm, base (subcordate or) rounded to short-attenuate, apex acute-acuminate; drying olivaceous to brown above, lower surface glabrescent or with subpersistent sparse hairs less than 0.1 mm long, mixed with scars of coarser caducous hairs 0.2 mm; dots absent; midrib convex, but (partly) sunken under surface level; nerves 15-20 pairs, flat or sunken; venation usually distinct; petiole 10-20 by 2-3 mm, late glabrescent. Inflorescences: sessile, brachyblast wart-like, simple or forked, to 4 mm long; in male and female 3-6(-10)-flowered; flowers with dense (pale) brown hairs 0.1 mm long; perianth 3-lobed, greenish (?) inside. Male flowers: pedicel 4-5 mm long, bracteole apical, persistent; buds obovoid, 3.5-4 by 3-3.5 mm, cleft c. 2/3, lobes 0.7 mm thick; staminal disc ± flat, blunt-triangular, 1.4 mm diameter; androphore tapering, 1.2 mm long, glabrous; anthers 11, half-sessile, suberect, 0.5 mm long. Female flowers: pedicel 3-5 mm long, bracteole caducous, median to apical; buds ± obovoid-ellipsoid, 4.5 by 3.5 mm, cleft c. 1/2, lobes 0.7(-l) mm thick; ovary ovoid, 1.5 by 1 mm, densely minutely pubescent, style (0.5-)1 mm long, stigma broadly 2-lobed and each lobe again 6-12-lobulate. Fruits solitary or 2 or 3 per infructescence, ovoid, 2.5-3.5 by 1.8-2.5 cm, with dense or sparse pale brown hairs 0.1 mm or less, sometimes glabrescent, style persistent or leaving a scar; dry pericarp 1.5-2.5 mm thick; fruiting pedicel 3-6 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) 8.0 - 20.0
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Hardiness (USDA) 10-12

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Cultivation

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Distribution

Knema stylosa world distribution map, present in Malaysia

Conservation status

Knema stylosa threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:943762-1
WFO ID wfo-0000356746
COL ID 6NLY3
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Knema stylosa Knema hirtella var. stylosa