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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 Commelina welwitschii ： ウィキペディア英語版 Commelina welwitschii ''Commelina welwitschii'' is an herbaceous plant in the dayflower family found in Southern Africa from Zimbabwe to Angola. A phylogenetic study based on the nuclear ribosomal DNA region 5S NTS and the chloroplast region trnL-trnF, two commonly used gene regions for determining relationships, revealed that ''Commelina welwitschii'' forms a clade with ''Commelina purpurea'' and ''Commelina fluviatilis''. Both of these relatives are African, share an unusual leaf anatomy, and have linear leaves that are often folded. Although it has yellow flowers, this study did not find a close relationship with ''Commelina capitata'' or ''Commelina africana'', the two other African yellow-flowered species. Robert Faden, an expert on the Commelinaceae, points out that ''Commelina welwitschii'' is one of only three species in the genus to have bead-like rhizomes along with ''Commelina crassicaulis'' and ''Commelina sphaerorrhizoma''. While it is clear that the former species is most likely a close relative given its many other similarities, the latter species is unlikely closely related given major differences in other characters.〔 ==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「Commelina welwitschii」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.