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Asplenium onopteris : ウィキペディア英語版 | Asplenium onopteris
''Asplenium onopteris'' is known as the Irish spleenwort or Western Black Spleenwort. It is difficult to identify compared with the Black spleenwort, ''Asplenium adiantum-nigrum''. The main difference is that ''A. onopteris'' is diploid and is one of the two parents of the tetraploid ''A. adiantum-nigrum'' (the other being the diploid ''A. cuneifolium''). Armed with a microscope, the most consistent observable difference between ''A. onopteris'' and ''A. adiantum-nigrum'' is that ''A. onopteris'' spores have a mean diameter of 28 μm and are almost all smaller than 31 μm, whereas those of ''A. adiantum-nigrum'' have a mean diameter of 34 μm and are almost all larger than 31 μm. The leaflets of typical ''A. onopteris'' are narrower in relation to their length than those of typical ''A. adiantum-nigrum'', but this is not a reliable means of identification.〔(【引用サイトリンク】title= Asplenium onopteris (Irish Spleenwort) )〕 ''A. onopteris'' is found all around the Mediterranean Sea, including North Africa. There are isolated findings as far North as Ireland and Poland. ==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「Asplenium onopteris」の詳細全文を読む
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