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''Obregonia'', the artichoke cactus, is a genus of cacti with a single species, ''Obregonia denegrii''. The genus ''Obregonia'' is named after Álvaro Obregón,〔Eggli, Urs ''et al.'' (2004). 〕 while the species is named after Ramon P. De Negri, who was the Minister of Agriculture of Mexico when the cacti was first discovered. This rare species resembles an inverted green pine cone with a woolly center. It grows slowly in culture and requires little water. It benefits from full sun and is multiplied by seed. The Nahuatl Indians call the plant ''peyotl'', and it is said to have hallucinogenic alkaloids.〔 It is one of the closest living relatives of the genus ''Lophophora''. File:Obregonia denigrii 9.JPG|''Obregonia denigrii'' in flower File:Obregonia denegrii 4.JPG|''Obregonia denigrii'' seen from above File:Obregonia denigrii 11.JPG|The flower of ''obregonia denigrii'' ==References== * Database entry includes justification for why this species is vulnerable 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「Obregonia」の詳細全文を読む スポンサード リンク
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