Alyxia papuana D.J.Middleton

Species

Angiosperms > Gentianales > Apocynaceae > Alyxia

Characteristics

Climber. Branchlets terete or weakly angled, sparsely lenticellate or not, glabrous. Leaves in whorls of 3; petiole 0.2-0.8 cm long, glabrous; blade coriaceous or subcoriaceous, elliptic, 1.3-6.6 by 0.4-2.6 cm, 2.2-5 times as long as wide, apex acuminate, acumen obtuse, base cuneate, margin weakly undulate, glabrous beneath and above, secondary veins 23-42 pairs, 65-70° from midrib. Inflorescence axillary, a simple unbranched pleiochasium, or a compound pleiochasium with clear internodes, or with 1 or 2 internodes and unbranched side branches, delicate, glabrous or sparsely puberulent all over, 1.1-3 cm long; peduncle 0.3-1.3 cm by 1-1.1 mm; bracts caducous or persistent, deltoid, 0.9-1.3 by 0.7-1.3 mm; bracteoles present, one immediately beneath calyx; flowers 4-12; pedicels 1.7-5 mm long. Sepals ovate, 1-1.2 by 0.8-1.4 mm, 0.9-1.3 times as long as wide, apex rounded or obtuse, ciliate, glabrous. Corolla cream or tube yellowish and lobes white; bud head ovate, apex obtuse or acute; tube cylindrical or slightly inflated, 2.7-3 by 0.9-1 mm, 2.2-3 times as long as sepals, 2.5-3.3 times as long as lobes, glabrous outside, pubescent in a band below the stamens inside or sparsely pubescent around stamens and more densely in a band beneath them; lobes ovate or orbicular, 0.9-1.1 by 0.7-1 mm, 1.1-1.3 times as long as wide, apex obtuse, base auriculate, glabrous outside and inside, not ciliate. Stamens inserted at 1.5-1.6 mm from corolla base which is 0.53-0.56 of tube length; filaments 0.8-1 mm long; anther apex 0.2-0.3 mm from corolla mouth, anthers c. 0.8 by 0.3 mm. Ovaries 0.5-1 mm high, pubescent around base only or in a tuft between the carpels; style 0.8-1.1 mm long; style head 0.5 mm long. Fruit black or yellowish green, stalks 2.3-3.2 mm long, with 1 or 2 articles in each string, 2.5 mm between articles, glabrous, dry smooth, 10.7-12.6 by 6.6-7.5 mm, ellipsoid or subglobose, symmetrical, apex acuminate or apiculate. Seeds not seen.
Life form perennial
Growth form shrub
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
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Environment

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Usage

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Edible -
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Cultivation

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Distribution

Alyxia papuana world distribution map, present in Papua New Guinea

Identifiers

LSID urn:lsid:ipni.org:names:1015392-1
WFO ID wfo-0000955834
COL ID CD3Q
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Alyxia papuana