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Himanthalia elongata : ウィキペディア英語版 | Himanthalia elongata
''Himanthalia elongata'' is a brown alga in the order Fucales, also known by the common names thongweed, sea thong and sea spaghetti. It is found in the north east Atlantic Ocean and the North Sea.〔 According to the World Register of Marine Species, ''Himanthalia elongata'' is the only member of its genus, ''Himanthalia'' Lyngbye, 1819 〔(''Himanthalia'' ) World Register of Marine Species. Retrieved 2011-09-23.〕 and the only member of its family, Himanthaliaceae (Kjellman) De Toni, 1891.〔(Himanthaliaceae ) World Register of Marine Species. Retrieved 2011-09-23.〕 ==Description==
''H. elongata'' is a common brown alga of the lower shore. The thallus is at first a small flattened or saucer-shaped disc up to three centimetres wide with a short stalk. In the autumn or winter, long thongs grows from the centre of this, branching dichotomously a number of times. They grow fast and can reach up to two metres by the following summer when they become mature. They bear the conceptacles, the reproductive organs, and begin to decay when the gametes have been released into the water. The discs live for two or three years.〔(Thongweed - ''Himanthalia elongata'' ) Marine Life Information Network. Retrieved 2011-09-23.〕〔(''Himanthalia elongata'' (Linnaeus) S.F. Gray ) The Seaweed Site. Retrieved 2011-09-23.〕
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「Himanthalia elongata」の詳細全文を読む
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