Alyxia rostrata

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Alyxia rostrata


Climber. Branchlets weakly angled, sparsely lenticellate, glabrous or sparsely and minutely puberulent, sometimes glabrescent. Leaves in whorls of 4 or 5; Inflorescence axillary or terminal, large lax panicles frequently branched, glabrous to puberulent, 4.3-16.5 cm long; Sepals ovate, 1.2-1.7 by 0.7-1.1 mm, 1.5-2 times as long as wide, apex rounded to acute, ciliate or not ciliate, glabrous or sparsely puberulent. Stamens inserted at 1.3-1.4 mm from corolla base which is 0.32-0.38 of tube length; Ovaries 0.6-0.7 mm high, pubescent around base only or in tufts between the carpels; Fruit orange, maturing black, stalks 1.6-3.7 mm long, with 1-7 articles in a string, 1.5-3.6 mm between articles, glabrous, articles dry smooth or with thin flesh, 5.5-9.9 by 4.3-6.5 mm, ellipsoid or cylindrical, symmetrical, apex rounded or obtuse. Seeds 5.4-8.2 by 3.9-4.8 by 3.4-4.6 mm.


Asia-Tropical: New Guinea present
Malesia: New Guinea.


The inflorescence of this species is a large terminal panicle. It is composed of a terminal cyme with axillary cymes in the axils of normal to extremely reduced leaves. These leaves are often deciduous resulting in the appearance of a robust ‘peduncle’ with a whorl of cymes at the top. In the description the inflorescence length is taken from where these cymes radiate and the peduncle length is the length from here to the first branching in the inflorescence and does not include the length of this false peduncle. There is often a pair of opposite bracteoles in some specimens but not in others. These bracteoles may be interpreted as bracts with the flowers missing in some specimens.


Markgr. 1927 – In: Bot. Jahrb. Syst.: 188
D.J. Middleton 2000 – In: Blumea: 108
Markgr. 1927 – In: Bot. Jahrb. Syst.: 187
Markgr. 2001 – In: PROSEA: 72