…The systematic position of gymnosperms was established here. About half a century later, CA Arnold proposed (1948) that gymnosperms were merely a collection of heterogeneous plants with exposed ovules, and that they did not constitute a systematic taxonomic group, and that there were at least two major lineages, the cycads and the conifers. The affinities of cycads, seed ferns, and ferns had already been suggested by Oliver and Scott when they defined the seed ferns. … *Some of the terminology that mentions "Arnold, CA" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ここにおいて裸子植物の系統分類学的位置が確定した。その後,半世紀ほどして,アーノルドC.A.Arnoldは,裸子植物は胚珠が露出している異系統の植物群をまとめたものにすぎず,系統的には分類群として成立しないこと,少なくともソテツ系と球果系の二大系統があると提言した(1948)。すでにソテツ類,シダ種子類およびシダ類の類縁性は,オリバーとスコットのシダ種子類の設定のときに示唆されていた。… ※「アーノルド,C.A.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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