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''Pachycereus'' is a genus of 9–12 species of large cacti native to Mexico and just into southern Arizona, USA. They form large shrubs or small trees up to 15 m or more tall, with stout stems up to 1 m in diameter. ''Pachycereus'' comes from the ancient Greek ''pakhus'' meaning "thick" and the Latin ''cereus'' meaning "torch". ;Selected species *''Pachycereus gatesii'' *''Pachycereus gaumeri'' *''Pachycereus grandis'' *''Pachycereus hollianus'' *''Pachycereus marginatus'' *''Pachycereus militaris'' *''Pachycereus pectin-aboriginum'' *''Pachycereus pringlei'' - cardón cactus *''Pachycereus schottii'' - totem cactus, senita cactus *''Pachycereus weberi'' ''P. pringlei'' is the tallest cactus species in the world, with a maximum recorded height of 19.2 m. 〔Salak, M. (2000). In search of the tallest cactus. ''Cactus and Succulent Journal'' 72 (3).〕 ;Synonymy These genera have been brought into synonymy with ''Pachycereus'': *''Backebergia'' Bravo *''Lemaireocereus'' Britton & Rose *''Lophocereus'' (A.Berger) Britton & Rose *''Marginatocereus'' (Backeb.) Backeb. *''Mitrocereus'' (Backeb.) Backeb. *''Pterocereus'' T.MacDoug. & Miranda ==References== 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「Pachycereus」の詳細全文を読む スポンサード リンク
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