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''Gymnocalycium'', commonly called chin cactus, is a genus of about 70 South American species of cacti. The genus name ''Gymnocalycium'' (from Greek, "naked calyx") refers to the flower buds bearing no hair or spines. Their main area of distribution is Argentina, part of Uruguay, Paraguay, southern Bolivia and part of Brazil. Most species are rather small varying from 4 to 15 centimetres in size. In cultivation they are popular for their easy flowering habits, and the flowers are generally brightly coloured. Where temperatures fall below they must be cultivated under glass with heat. ==References== File:Gymnocalycium Liberec 1.jpg|''Gymnocalycium'' species from Liberec botanical garden File:Gymnocalycium Liberec 2.jpg|''Gymnocalycium'' species from Liberec botanical garden File:Gymnocalycium Liberec 3.jpg|''Gymnocalycium'' species from Liberec botanical garden File:Gymnocalcium Oneanthemum.JPG|''Gymnocalcium oneanthemum'' from the Brooklyn Botanic Garden File:Gymnocalycium mihanovichii 2.JPG|''Gymnocalycium mihanovichii'' in flower File:Gymnocalycium horstii 3.JPG|The flower of ''Gymnocalycium horstii'' File:Gymnocalycium eurypleurum 3.JPG|''Gymnocalycium eurypleurum'' File:Gymnocalycium baldianum 1.JPG|''Gymnocalycium baldianum'' in flower File:Gymnocalycium denudatum 1.JPG|''Gymnocalycium denudatum'' File:Gymnocalycium leeanum.JPG|''Gymnocalycium leeanum'' File:Gymnocalycium ragonesii 2.JPG|''Gymnocalycium ragonesei'' File:Gymnocalycium stellatum 1.JPG|''Gymnocalycium stellatum'' File:Gymnocalycium multiflorum.JPG|''Gymnocalycium monvillei'' File:Gymnocalycium bruchii 1.JPG|''Gymnocalycium bruchii'' File:Gymnocalycium uruguayense 1.JPG|''Gymnocalycium uruguayense'' File:Gymnocalycium quehlianum 2.JPG|''Gymnocalycium quehlianum'' File:Gymnocalycium spegazzinii 11.JPG|''Gymnocalycium spegazzinii'' Image:Succulent close-up.JPG|The Ruby Ball or Moon Cactus, ''Gymnocalycium mihanovichii'' 'Hibotan', is a mutant that lacks chlorophyll 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「Gymnocalycium」の詳細全文を読む スポンサード リンク
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