Knema glaucescens Jack

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Tree 8-15 m. Twigs 1—2(—3) mm in diameter, at first with very fine rusty, scurfy hairs 0.1 mm long, glabrescent; bark finely striate, not tending to crack or flake. Leaves chartaceous or thinly coriaceous, ovate-oblong to lanceolate, 6-20(-23) by 2-6.5(-7.5) cm, apex acute-acuminate, base rounded or subattenuate; greenish or brown above; lower surface greyish, with subpersistent ± dense stellate hairs 0.1-0.2 mm long, mixed with larger stellate-dendroid hairs, when shed leaving minute hair scars; dots absent; midrib flat or raised above; nerves 13-20 pairs, raised above, venation distinct above; petiole 5-15 by 1-2 mm. Inflorescences: peduncle up to 2 mm, brachyblast simple or forked, to 5 mm long; in male 5-20-flowered, in female 1-10-flowered; flowers with persistent grey to rusty hairs 0.1-0.2 mm long, perianth 3-lobed, creamy or yellowish inside. Male flowers: pedicel 6-11 mm long; bracteole early or late caducous, median or somewhat higher up; buds globose, 2.5-3.5 mm in diameter, cleft c. 4/5, lobes 0.8-1 mm thick; staminal disc flat to low-mammillate, circular or subtriangular, 1.5-2 mm in diameter; anthers 9—13(—15?, see note 2), slightly to distinctly stiped, ± horizontal, 0.2-0.4 mm long, spaced; androphore 0.5-1 mm long. Female flowers: pedicel 3-6 mm long; bracteole ± median; buds ellipsoid-obovoid, 4-5(-5.5) by 2.5-4 mm, cleft slightly over halfway, lobes 1 mm thick; ovary ovoid, 2-2.5 mm long; stigma subsessile, ± flat, (1-or) 2-4-lobed and each lobe again few-to many-(up to 15-)lobulate or serrate. Fruits 1 or 2 per infructescence, ellipsoid or broadly obovoid, sometimes ridged, 1.8-2.2 by 1.2-1.8 cm, with mealy hairs 0.1-0.3 mm long; dry pericarp l(-2) mm thick; fruiting pedicel (3-) 4-11 mm long.
Life form -
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 10.0 - 13.5
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

An understorey tree of forests, including swamp forest; growing in sand, granitic sand, and clayey soil; at elevations from sea level to 500 metres.
Light -
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Hardiness (USDA) 10-12

Usage

Uses material medicinal wood
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
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Distribution

Knema glaucescens world distribution map, present in Indonesia, Malaysia, Singapore, and Thailand

Conservation status

Knema glaucescens threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:585862-1
WFO ID wfo-0000356981
COL ID 6NLWZ
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Knema glaucescens Palala glaucescens Palala geminata Knema geminata Myristica geminata Myristica glaucescens