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Typhonodorum
''Typhonodorum'' is a monotypic genus of flowering plants in the family Araceae. The single species making up this genus is ''Typhonodorum lindleyanum''. The genus is native to Madagascar, the Comores, Zanzibar, and Mauritius.〔(Kew World Checklist of Selected Plant Families )〕 This genus is believed to be closely related to ''Peltandra'' even though ''Peltandra'' is only found in North America and there don't appear to exist closely related genera in the African mainland. There isn't fossil evidence to link the two genera so it has been proposed that there once was a genus in Africa from which the two genera had originated. The African mainland genus spread to North America and to Madagascar 50 million years ago before it broke off. Then the African genus went extinct and the North American and Madagascan genera remained.〔Bown, Demi (2000). ''Aroids: Plants of the Arum Family''. Timber Press. ISBN 0-88192-485-7.〕
==References==
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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