Knema oblongata Merr.

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Shrub or tree 4-20 m. Twigs sometimes faintly angular, 2-5(-8) mm diameter, at first with rusty hairs 0.2-0.6 mm long, glabrescent; bark (finely) striate, not cracking or flaking. Leaves chartaceous or coriaceous, elliptic to (oblong-)lanceolate, 11-45 by 2.5-14 cm, base subattenuate, rounded, or shallowly cordate, apex acute(-acuminate); drying greenish brown, ± glossy above, with scattered hair scars (lens!), lower surface greyish, finely papillate, with yellow-brown to rusty hairs of variable size, persistent or partially late glabrescent; dots absent; midrib raised above; nerves (10-) 18-26 pairs, sunken or raised above; venation fine, distinct; petiole late glabrescent, 10-25 by 2-6 mm. Inflorescences: peduncle up to 4 mm (see the subspecies), brachyblast simple or forked, to 5 mm long, in male 5-25-flowered, female 1-5-flowered; flowers with rusty hairs 0.1-1 (-2) mm long; perianth 3-(or 4-)lobed, yellow (?) or red inside. Male flowers: pedicel 2-8 mm long, bracteole caducous, median to subapical; buds depressed broadly obovoid, tapering in the lower half, grooved when dry, 2.5-5 by 2.5-5 mm, cleft l/2-2/3(-3/4, see note under subsp. oblongata), lobes 0.5-1 mm thick; staminal disc circular or faintly triangular, flat or slightly concave, 1.5-3 mm diameter; anthers 7-9 (subsp. parviflora and pedunculata), or 13—18(—21), ± half-sessile to just stiped, ± oblique or suberect, (0.3-)0.5-0.7 mm, not or but slightly touching; androphore tapering or not, 1-2 mm long. Female flowers: pedicel 2.5-10 mm long, bracteole at or above the middle; buds ellipsoid to obovoid, 6-7.5 by 4-6 mm, cleft c. 1/2, lobes 0.5-1 mm thick; ovary sub-globose, 3-3.5 mm diameter; style 1-1.5 mm; stigma 2-lobed and each lobe again 3-5-lobulate. Fruits 1-3 per infructescence, subovoid or obovoid, apex subacute to obtuse, base attenuate to rounded, 2-3.8 by 1.5-2 cm, with rusty hairs 1-1.5 mm long, easily rubbed off; dry pericarp 2-4 mm thick; fruiting pedicel 3-10 mm long.
Life form -
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
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Mature height (meter) 4.0 - 20.0
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Photosynthetic pathway c3

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Hardiness (USDA) 10-12

Usage

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Cultivation

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Distribution

Knema oblongata world distribution map, present in Indonesia and Malaysia

Identifiers

LSID urn:lsid:ipni.org:names:585898-1
WFO ID wfo-0000356827
COL ID 6NM8J
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR) Link

Synonyms

Knema oblongata

Lower taxons

Knema oblongata subsp. pedunculata Knema oblongata subsp. parviflora