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Synechanthus
''Synechanthus'' is a monoecious genus of flowering plant in the palm family found in Mexico, Central and South America. Commonly called bola, palmilla, or jelly bean palm, they are closely related to members of ''Chamaedorea'', only distinguished by their flower and fruit form.〔Uhl, Natalie W. and Dransfield, John (1987) ''Genera Palmarum - A classification of palms based on the work of Harold E. Moore''. Lawrence, Kansas: Allen Press. ISBN 0-935868-30-5 / ISBN 978-0-935868-30-2〕 The Greek genus name is a combination of "united" and "flower".〔Riffle, Robert L. and Craft, Paul (2003) ''An Encyclopedia of Cultivated Palms''. Portland: Timber Press. ISBN 0-88192-558-6 / ISBN 978-0-88192-558-6〕
==Description==
''S. fibrosus'' is solitary while ''S. warscewiczianus'' is clustering. The trunks of both are slender, rarely more than 2.5 cm wide, growing to 4.5 m tall; usually dark green, they are ringed by white leaf scars. ''S. warscewiczianus'' will usually have a dominant main stem with smaller clustering units surrounding it. The pinnate leaf is over a meter long, borne on a 30 cm petiole; the rachis is angled above and rounded below, the leaflets are slightly offset, occasionally twisting, the apical set being widest.〔
The inflorescence emerges in the leaf crown but sags pendent in fruit, once or twice branched and solitary. The peduncle is long and the prophyll short and tubular, disintegrating into a fibrous mass at the base. There are four to five peduncular bracts, longer than the prophyll, with the distalmost exceeding the peduncle. The rachis is elongated bearing slender rachillae with slender, spinelike tips. The flowers are arranged on the rachillae such that the pistillate members are proximal, with 5 - 13 staminate flowers at the distal end.
The staminate flowers mature from green to yellow, triangular in bud, with three sepals fused into a lobed cupule and three valvate petals. They carry three or six stamens on short, recurved filaments with basifixed, latrose anthers with elliptic, monosulcate pollen and scabrate, tectate exine. The pistillode, when present, is small, ovoid and three lobed. The pistillate flowers are also yellow with three cupped sepals and three longer, imbricate petals. When staminodes are present there are three, joined in a ring; the gynoecum is ovoid, triocular and triovulate. The three stigmas are recurved with elongated, laterally attached ovules. The large fruit is round or slightly egg shaped, maturing to bright red or orange in color, with a fleshy mesocarp and a membranous endocarp. The single seed has homogeneous endosperm and a centrally placed embryo.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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