Alyxia arfakensis Kaneh. & Hatus.

Species

Angiosperms > Gentianales > Apocynaceae > Alyxia

Characteristics

Reported as an erect shrub (see note). Branchlets weakly angled, sparsely lenticellate or not, sparsely to densely and minutely puberulent, sometimes glabrescent. Leaves in whorls of 3, coriaceous or subcoriaceous; petiole 0.1-0.4 cm long, glabrous or pubescent; blade elliptic or obovate, 1.4-5 by 0.4-2.3 cm, 2-4.2 times as long as wide, apex acute, shortly acuminate with an obtuse acumen or acuminate but notched at the apex, not mucronate, base cuneate, margin weakly or strongly undulate, glabrous beneath, glabrous or puberulent on midrib only above, secondary veins 18-41 pairs, 65-75° from midrib. Inflorescence axillary, a simple unbranched pleiochasium or with 1 or 2 internodes and unbranched side branches, delicate, sparsely to densely puberulent, 0.8-3 cm long; peduncle 0.4-1.7 cm by 0.6-0.9 mm; bracts persistent, deltoid, leafy or narrowly ovate, 0.6-1.3 by 0.4-0.9 mm; bracteoles absent or only on pedicel of terminal flower; flowers 4-8; pedicels 0.7-6.5 mm long. Sepals ovate, c. 1.1 by 0.6-0.7 mm, 1.6-1.8 times as long as wide, apex obtuse or acute, ciliate, glabrous or sparsely puberulent on centre line or all over. Corolla white; bud head 1.2 mm long which is 0.32-0.34 of bud length, ellipsoid, apex rounded; tube slightly inflated, 2.3-2.7 by 0.9-1 mm, 2.1-2.5 times as long as sepals, 1.6-2.25 times as long as lobes, glabrous outside, sparsely pubescent around stamens and more densely in a band beneath them inside; lobes elliptic or ovate, base auriculate, apex rounded or obtuse, not ciliate, 1.2-1.4 by 0.9-1 mm, 1.3-1.4 times as long as wide, glabrous outside and inside. Stamens inserted at 1.2-1.8 mm from corolla base which is 0.46-0.56 of tube length; filaments 0.5 mm long; anther apex 0.2-0.5 mm from corolla mouth, anthers 0.7-0.8 by 0.3-0.4 mm. Ovaries 0.5 mm high, glabrous or pubescent in tuft between carpels; style 0.8-0.9 mm long; style head 0.5 mm long, pubescent. Fruit stalks 1.9-2.2 mm long; articles 8.5-10.3 by 6.2-7.2 mm, ellipsoid, symmetrical, apex obtuse, glabrous. Seeds c. 8.7 by 4.8 by 4.2 mm.
Life form perennial
Growth form shrub
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
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Nitrogen fixer -
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Environment

Light -
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Hardiness (USDA) -

Usage

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

Cultivation

Mode -
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Distribution

Alyxia arfakensis world distribution map, present in Papua New Guinea

Identifiers

LSID urn:lsid:ipni.org:names:76617-1
WFO ID wfo-0000953985
COL ID CCX3
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Alyxia arfakensis