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''Discocactus'' is a genus of tropical cactus. The name comes from the ancient Greek "diskos" (=disc) because of its shape. ''Discocactus'' plants are endemic to southern Brazil, eastern Bolivia, and northern Paraguay. These species are in the risk of extinction in the wild. The plants have a slightly flattened spherical shape. Areoles bear sharp spines. At the apex of the adult plants, appeared a woolish cephalium white ot z little bit yellow or grey. On the sides of the cephalium appear white nocturnous flowers. Fruits are pink or red. They contains black seeds. Image:Discocactus horstii.jpg|''Discocactus horstii'' Image:Discocactus araneispinus habit.jpg|''Discocactus zehntneri'' Image:Discocactus placentiformis.jpg|''Discocactus placentiformis'' == Bibliography == * Edward F. Anderson : ''The Cactus Family''. Timber Press: Portland (Oregon), 2001, p. 218-221 ISBN 0-88192-498-9 * N. L. Britton, J. N. Rose: ''The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family''. Washington, 1920 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「Discocactus」の詳細全文を読む スポンサード リンク
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