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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 Pterygophora californica ： ウィキペディア英語版 Pterygophora californica ''Pterygophora californica'' is a large species of kelp, commonly known as stalked kelp. It is the only species in its genus ''Pterygophora'' (Ruprecht, 1852).〔(''Pterygophora'' Ruprecht, 1852 ) World Register of Marine Species. Retrieved 2011-09-11.〕 It grows in shallow water on the Pacific coast of North America where it forms part of a biodiverse community in a "kelp forest". ==Description== ''P. californica'' is a large brown seaweed and may grow to about three metres in height. It is attached to a rocky substrate by its holdfast and has a single, tough, woody stipe or stem up to two metres long and 2cm (0.8in) in diameter. It is a long-lived perennial plant which may survive for twenty-five years,〔Lobban, Christopher S. and Michael J. Wynne (1981). The Biology of Seaweeds. Botanical Monographs Volume 17. Blackwell Scientific Publications. Oxford, UK.〕 and annual growth rings can be seen in the stipe. There are a number of smooth blades arranged on either side of the top half of the stipe. These are sporophylls and bear reproductive organs called sporangia in which the spores are formed. The terminal blade is linear, has a midrib and is larger than the others, growing up to 90cm (33in) long.〔(''Pterygophora californica'' (Ruprecht) ) RaceRocks.com. Retrieved 2011-09-11.〕 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「Pterygophora californica」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.