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Ceratolobus
''Ceratolobus'' is a dioecious genus of flowering plant in the palm family found in Southeast Asia, commonly called rotan. They are only differentiated from close relatives like ''Korthalsia'', ''Calamus'', and ''Daemonorops'' by leaf sheath appendages or inflorescence variations.〔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 combines "horn" and "capsule".〔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==
Among rattans they are relatively delicate and vinelike, very spiny and densely clustering, stems eventually becoming bare and covered in leaf scars. The leaves, rachises, and petioles (when present) may be equipped with simple climbing adaptations like barbs, cirrus, and grapnel spines but the climbing habit mostly relies on stem spines, and their leaning, sprawling nature.
With the most reduced inflorescence in the Calaminae,〔 the large panicle remains enclosed within a tough, woody, occasionally armed bract. Nearing antithesis the beaked end develops splits, exposing the flowers; the bract usually remains persistent, later developing another longitudinal split in fruit, or rarely falling away. Pistillate and staminate members are indistinguishable without opening the protective prophyll. The former is branched to two orders, the latter to three; male flowers are borne distant and solitary, female's are larger and develop next to similar, but distorted, sterile male flowers. The globose or egg-shaped fruit is scaly and has one seed.〔
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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