Alyxia royeniana Markgr.

Species

Angiosperms > Gentianales > Apocynaceae > Alyxia

Characteristics

Erect shrub, ground creeper or climber. Branchlets weakly angled, sparsely lenticellate, densely and minutely puberulent. Leaves in whorls of 3 or 4; petiole 0.1-0.3 cm long, pubescent; blade coriaceous or thickly coriaceous, elliptic or broadly elliptic, 0.4-2 by 0.3-1 cm, 1.1-2.3 times as long as wide, apex rounded, obtuse or apiculate, not mucronate, slightly reflexed at apex or flat, base obtuse or acute, margin not undulate, glabrous beneath, glabrous or puberulent only on midrib above, not punctate beneath, secondary veins weakly distinguishable or indistinct above, obscure beneath. Inflorescence axillary, flowers in a simple unbranched pleiochasium (possibly only one remaining in fruit), sparsely puberulent all over or densely puberulent, c. 1 cm long; peduncle c. 0.2 cm by 1 mm; bracts persistent, linear, c. 2.3 by 1 mm; bracteoles present, immediately beneath calyx or on pedicel; flowers c. 4; pedicels 2.1-3 mm long. Sepals narrowly ovate, 2.5-2.6 by 1.5 mm, c. 1.7 times as long as wide, apex acute, ciliate, glabrous or sparsely puberulent outside. Corolla tube cylindrical, c. 8 mm long, 3.2 times as long as sepals, 3.2 times as long as lobes, glabrous outside, sparsely pubescent around stamens and more densely in a band beneath them inside; lobes ovate, c. 2.5 by 2.1 mm, 1.2 times as long as wide, apex acute, base auriculate, glabrous outside and inside, not ciliate. Stamens inserted at c. 5.5 mm from corolla base which is 0.69 of tube length; filaments 0.6 mm long; anther apex 0.7 mm from corolla mouth, anthers 1.5 by 0.5 mm. Ovaries 1 mm high, pubescent around base only; style 3.1 mm long; style head 0.8 mm long. Fruit black or yellow turning black, stalks 1.7-3 mm long, with 1 or 2 articles in each string, 0.2 mm between articles, glabrous or sparsely puberulent at ends; articles with thin flesh, 7.8-12.5 by 5.6-9.5 mm, ellipsoid or sub globose, symmetrical, apex rounded or acuminate. Seeds elliptic, c. 5 by 3.6 by 2.8 mm.
Life form perennial
Growth form shrub
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
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Environment

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Usage

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Edible -
Therapeutic use -
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Cultivation

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Distribution

Alyxia royeniana world distribution map, present in Papua New Guinea

Identifiers

LSID urn:lsid:ipni.org:names:76780-1
WFO ID wfo-0000956191
COL ID CD4M
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Alyxia royeniana