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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Sparganium eurycarpum ： ウィキペディア英語版 Sparganium eurycarpum ''Sparganium eurycarpum'' is a species of bur-reed known by the common names broadfruit bur-reed and giant bur-reed. It is native to wetlands in Eurasia and North America. It is a clonal perennial, spreading by below-ground rhizomes. The common name, bur-reed, arises from the distinctive round clusters of fruits that take the form of a mace. It can be distinguished from all other species of bur-reed by the presence of two stigmas. This species frequently occurs in areas with spring flooding, and may be emersed during periods of lower water. The buried rhizomes provide one method to survive periods of drought, fire, or ice scour.〔Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 〕 The flowers are wind pollinated, the male flower clusters being separate and more highly elevated than the female.〔Sculthorpe, C. D. 1967. The Biology of Aquatic Vascular Plants. Reprinted in 1985. London: Edward Arnold. p.282.〕 It also produces large seeds, which can accumulate in the soil as buried reserves.〔van der Valk, A. G. and C. B. Davis. 1976. The seed banks of prairie glacial marshes. Canadian Journal of Botany 54: 1832–1838.〕 It can form dense stands under the right conditions; for example, ''Sparganium'' is one of the four main vegetation types in the Ottawa River, Canada.〔Day, R. T., P. A. Keddy, J. McNeill, and T. Carleton. 1988. Fertility and disturbance gradients: a summary model for riverine marsh vegetation. Ecology 69: 1044–1054.〕 Muskrats feed on the plant, particularly its rhizomes, while the seeds are an important food source for waterfowl.() ==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「Sparganium eurycarpum」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.