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''Dracontium'' is a genus of flowering plants similar to those of ''Amorphophallus''. It is native to South America, Central America, southern Mexico, and the West Indies.〔(Kew World Checklist of Selected Plant Families )〕〔erts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew. 〕〔Forzza, R. C. 2010. Lista de espécies Flora do Brasil http://floradobrasil.jbrj.gov.br/2010. Jardim Botânico do Rio de Janeiro, Rio de Janeiro〕 ''Dracontium'' species can be distinguished from related genera by their inflorescence, which is smaller and unisexual. The plant has a large tuber similar to that of ''Amorphophallus'', but rounder, and with no central and circular scar mark. When ''Dracontium'' plants begin to flower, the tuber swells and smoothens.〔〔Zhu, G. h. & T. B. Croat. 2004. Revision of ''Dracontium'' (Araceae). Annals of the Missouri Botanical Garden 91(4): 593–667〕 ==Species== More than twenty ''Dracontium'' species have been documented: # ''Dracontium amazonense'' G.H.Zhu & Croat - Venezuela, Peru, northwestern Brazil # ''Dracontium angustispathum'' G.H.Zhu & Croat - Colombia, Peru # ''Dracontium asperispathum'' G.H.Zhu & Croat - Colombia, Peru, Ecuador # ''Dracontium asperum'' K. Koch - Puerto Rico, Dominican Republic, Trinidad, Windward Islands, Venezuela, Peru, northwestern Brazil, the Guianas # ''Dracontium bogneri'' G.H.Zhu & Croat - Brazil # ''Dracontium croatii'' G.H.Zhu - Carchi and Pichincha Provinces in Ecuador # ''Dracontium dubium'' Kunth - Venezuela, Guyana # ''Dracontium gigas'' (Seem.) Engl. - Nicaragua, Costa Rica # ''Dracontium grandispathum'' G.H.Zhu & Croat - Ecuador # ''Dracontium grayumianum'' G.H.Zhu & Croat - Panama, Colombia # ''Dracontium guianense'' G.H.Zhu & Croat - French Guiana # ''Dracontium iquitense'' E.C.Morgan & J.A.Sperling- Loreto region of eastern Peru # ''Dracontium longipes'' Engl. - Peru, Acre State of Brazil # ''Dracontium margaretae'' Bogner - Venezuela, Brazil, Bolivia, Paraguay # ''Dracontium nivosum'' (Lem.) G.H.Zhu - Pará, Maranhão # ''Dracontium peruvianum'' G.H.Zhu & Croat - Peru, northwestern Brazil # ''Dracontium pittieri'' Engl. - Costa Rica # ''Dracontium plowmanii'' G.H.Zhu & Croat - Peru # ''Dracontium polyphyllum'' L. - Pará, French Guiana, Suriname, Venezuela, Peru, Puerto Rico # ''Dracontium prancei'' G.H.Zhu & Croat - Amazonas and Roraima States of northwestern Brazil # ''Dracontium purdieanum'' (Schott) Engl. - Colombia, Venezuela # ''Dracontium soconuscum'' Matuda - Chiapas, Costa Rica, Panama # ''Dracontium spruceanum'' (Schott) G.H.Zhu - Costa Rica, Panama, Colombia, Venezuela, northwestern Brazil, Ecuador, Peru, Suriname # ''Dracontium ulei'' K.Krause - Acre State in western Brazil; Pando region of northern Bolivia 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dracontium」の詳細全文を読む スポンサード リンク
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