Knema elegans Warb.

Species

Angiosperms > Magnoliales > Myristicaceae > Knema

Characteristics

Trees to 20 m tall; bark grayish brown; branches spreading, slightly drooping; juvenile branches and juvenile leaves with dense rusty or grayish brown pubescence, hairs 0.2-0.5 mm, late glabrescent. Petiole 0.6-1.7 cm, pubescent; leaf blade papery to nearly leathery, oblong-lanceolate to linear-lanceolate, 12-25(-32) × 3-6(-8) cm, margins nearly parallel, apex acute or shortly acuminate, base broadly cuneate or nearly rounded, abaxially with dense rusty or grayish brown stalked stellate pubescence; midvein sunken adaxially, lateral veins 15-32(-36) pairs, prominent on both surfaces. Male inflorescences axillary or arising from axils of deciduous leaves, with 4-8 flowers; peduncles 3-4 mm, pubescent. Male flower buds 3-5 mm, obovoid or subglobose; pedicel 5-9 mm; bracteole inserted at middle (or higher) of pedicel; perianth lobes 3(or 4), with hairs 0.2-0.5 mm; staminate disk flat or ± concave; anthers 8-13. Female flowers 3-8(-10)-clustered; peduncle short, cylindrical, 3-4 mm, pubescent; ovary ovate, ca. 3 mm; style half as long as ovary; stigma bifid, each lobe again shallowly 2-lobulate. Infructescences of 1 or 2 fruits; fruiting pedicel 0.5-1 cm, pubescent with hairs ca. 1 mm, glabrescent. Fruit ovoid or ellipsoid, 2.5-3.2 × 1.8-2 cm; perianth sometimes persistent; pericarp ca. 1 mm thick. Seeds ovoid-ellipsoid, 2-2.8 × 1.3-1.6 cm; aril orange-red to deep red, completely entire or at apex slightly open. Fl. Aug-Sep, fr. Apr-May.
Life form -
Growth form tree
Growth support free-standing
Foliage retention
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 18.0 - 20.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Mountain slopes, low hills, ravines; at elevations from 500-1,700 metres.
Light -
Soil humidity 1-3
Soil texture 7-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Knema elegans world distribution map, present in China, Cambodia, Lao People's Democratic Republic, Thailand, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:585854-1
WFO ID wfo-0001285888
COL ID 6NM8X
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Myristica elegans Knema siamensis Knema elegans