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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 Isoetes occidentalis ： ウィキペディア英語版 Isoetes occidentalis ''Isoetes occidentalis'' (western quillwort) is a species of quillwort in the Isoetaceae family. It can be found in aquatic habitats of coastal Alaska and British Columbia south to California and Colorado. It is frequently found on Vancouver Island and around the Fraser Valley region. It bears 10 to 30 or more rigid, dark green leaves, each 5 to 20 centimeters long. The velum covers one fourth to one third of the orbicular sporangium, which is 5 to 6 millimeters in diameter. The ligule is shaped like a shortened triangle. The white megaspores are 500 to 700 micrometers in diameter and bear sharp ridges and crests. The microspores are 36 to 43 micrometers long.〔 Though the leaves seem to bear resemblance to those of ''I. lacustris'', especially the occasionally occurring reddish base, ''I. occidentalis'' is a hexaploid and ''I. lacustris'' is a decaploid. ==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「Isoetes occidentalis」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.