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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 Stangeriaceae ： ウィキペディア英語版 Stangeriaceae Stangeriaceae is the smallest family of cycads, both in number of living and fossil species. The family contains only two living genera, ''Stangeria'' and ''Bowenia'', though the latter genus has been recommended for placement in a separate family by itself. The family is recognized by having vascularized stipules, and by lacking cataphylls, or producing them irregularly. These unusual characters led to the original description of ''Stangeria'' as a fern, and it was only when seeds were later produced on the plant that its true affinities were realized.〔("The Cycad Pages: Stangeria eriopus" ), Royal Botanic Gardens Sydney website〕 Though today the family occurs only in South Africa and Queensland, Australia, fossils are known from Jurassic sediments in Argentina and the British Isles.〔(Fossil record of the Cycads )〕 Recent cladistic studies suggest that the fossil taxon ''Mesodescolea'' may also have affinities with the Stangeriaceae. This highly lobed fossil leaf from the Lower Cretaceous has only been found in Argentina. ==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「Stangeriaceae」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.