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''Alluaudia'' is a genus of flowering plants in the family Didiereaceae. There are six species, all endemic to Madagascar.〔(''Alluaudia''. ) Madagascar Catalogue. eFloras.〕 Most occur in the southwestern subarid forest-thicket vegetation of the island.〔Schatz, G., et al. (Modeling of endemic plant species of Madagascar under climate change. ) In: Assessing the Impact of Climate Change on Madagascar's Livelihoods and Biodiversity. Conference. Antananarivo, Madagascar, 28 January 2008.〕 Spines are arranged around the leaves as a defense against herbivores. The spines are several meters above the ground, and probably evolved in response to herbivory by now-extinct lemurs, such as ''Hadropithecus''. Several lemur species living today feed heavily on ''Alluaudia'', such as the ring-tailed lemur (''Lemur catta'') and the white-footed sportive lemur (''Lepilemur leucopus'').〔Crowley, B. E. and L. R. Godfrey. (2013). (Why all those spines?: Anachronistic defences in the Didiereoideae against now extinct lemurs. ) ''South African Journal of Science'' 109(1-2), 1-7.〕 == Species == *''Alluaudia ascendens'' *''Alluaudia comosa'' *''Alluaudia dumosa'' *''Alluaudia humbertii'' *''Alluaudia montagnacii'' *''Alluaudia procera'' 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「Alluaudia」の詳細全文を読む スポンサード リンク
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