Knema andamanica subsp. nicobarica (Warb.) W.j.de Wilde

Subspecies

Angiosperms > Magnoliales > Myristicaceae > Knema > Knema andamanica

Characteristics

Tree 6-16 m. Twigs 1.5-3(-5) mm in diameter, early glabrescent, at first with dense grey or yellowish brown hairs 0.1 mm long or less; bark finely striate, not tending to crack or flake. Leaves chartaceous, oblong to lanceolate, 8-30 by 2-8.5 cm, base attenuate to rounded, apex subobtuse or acute(-acuminate); upper surface greenish brown, lower surface faintly papillate, with ± dense stellate hairs 0.1-0.4 mm (in subsp. andamanica, not in Malesia, mixed with longer dendroid hairs or not), subpersistent or late glabrescent, the coarser hairs early shed and leaving minute scars; dots absent; midrib flat or slightly raised above; nerves 12-24 pairs, thin and faint; venation (very) fine, aréoles 0.5 mm diameter or less, distinct above; petiole 8-20 by 1.5-3 mm. Inflorescences: sessile or pedunculate up to 5 mm, brachyblast wart-like, simple or forked, 2-8 mm in diameter, in male 3-15(-30)-flowered, in female 2-6-flowered; flowers with dull yellowish or (grey-)brown scurfy hairs 0.1-0.2(-0.3) mm or less, perianth 3-lobed, reddish inside. Male flowers: pedicel 3-6 mm long, bracteole subapical, subpersistent or caducous; buds obovoid, 2.5-4.5 by 2—3 mm, cleft 1/2—2/3, lobes 0.5—0.7 mm thick; staminal disc ± flat or convex, circular, 0.8-1.2 mm in diameter; anthers 6 or 7, half-sessile, suberect, 0.3-0.5 mm, nearly touching; androphore slender, 1-2 mm long. Female flowers: pedicel 5-6 mm long, bracteole subapical; buds ovoid-oblong, 6 by 2.5 mm, cleft about halfway, lobes 0.4 mm thick; ovary ovoid, 2 by 1.5 mm; style including stigma slender, 1.5 mm long, stigma ± deeply 2-lobed and each lobe shallowly 2-4-lobulate at the apex. Fruits 1 or 2 per infructescence, ellipsoid, apex rounded to faintly pointed, 1.8-2 by 1.2-1.6 cm, with rusty or rufous hairs 0.2-0.5 mm long; dry pericarp 1.5 mm thick; fruiting pedicel 7 mm long.
Life form -
Growth form tree
Growth support -
Foliage retention evergreen
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 6.0 - 16.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Knema andamanica subsp. nicobarica world distribution map, present in Indonesia, India, Malaysia, and Thailand

Conservation status

Knema andamanica subsp. nicobarica threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:886891-1
WFO ID wfo-0001364692
COL ID 5J7BF
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Knema andamanica subsp. nicobarica