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''Crinum'' is a genus of about 180 species of perennial plants that have large showy flowers on leafless stems, and develop from bulbs. They are found in seasonally moist areas, including marshes, swamps, depressions and along the sides of streams and lakes in tropical and subtropical areas worldwide. ''Crinum'' leaves are basal, typically long and strap-shaped, with colors ranging from light green to green. Several species are used in aquariums. Cytological studies have shown some 27 species of Crinum to be diploid with a normal chromosome count of 2n = 22. Abilio Fernandes found that the Orange River ''Crinum bulbispermum'' had a count of 2n = 66, and some desert ''Crinum macowanii'' 2n = 44. These polyploid species produce seeds that are often parthenogenetic triploid or diploids, lack vigour and seldom grow to mature plants.〔http://www.crinum.org/review.html〕 ==Species== , the World Checklist of Selected Plant Families lists 105 species of ''Crinum''. Amongst these are: *''Crinum americanum'' L. – Southern Swamplily, Seven Sisters *''Crinum asiaticum'' L. – Poisonbulb *''Crinum bulbispermum'' (Burm.f.) Milne-Redh. & Schweick. – Hardy Swamplily *''Crinum latifolium'' L. *''Crinum moorei'' Hook.f. *''Crinum pedunculatum'' R.Br., syn. ''C. asiaticum'' var. ''pedunculatum'' – Swamplily, River Lily or Spider Lily *''Crinum thaianum'' Schulze – Onion plant 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「Crinum」の詳細全文を読む スポンサード リンク
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