…Lycopsida (also called Lycopods) is a group of ferns (seedless vascular plants) with small leaflets. There are five extant genera, including Lycopodium, Selaginella, and Monocentra, and also includes the scale trees and reed trees that flourished in the Paleozoic era. From [Central Pillar]…It has been recognized since the 19th century that the stele is an important character in considering the phylogeny of plants. In the early 20th century, EC Jeffrey divided vascular plants, which had previously been divided into cryptogams and flowering plants, into the macrophyllous plants Pteropsida and the microphyllous plants Lycopsida based on the difference between the leaves and the stele. Since then, the structure of the stele has been recognized as the most important character for the classification of vascular plants. Taking into account recent findings, the evolution of the stele can be summarized as follows. … *Some of the terminology that mentions "Lycopsida" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ヒカゲノカズラ類Lycopsida(英名lycopods),石松(せきしよう)綱などともいう。シダ植物(無種子維管束植物)のうち,小葉性の葉をもった植物群で,現生にはヒカゲノカズラ属,イワヒバ属,ミズニラ属など5属があり,古生代に繁茂した鱗木(りんぼく)や蘆木(ろぼく)なども含まれる。… 【中心柱】より…中心柱が植物の系統を考える上で重要な形質であることは,19世紀から認められていた。20世紀初頭ジェフリーE.C.Jeffreyがそれまで隠花植物と顕花植物に分けられていた維管束植物を,葉と中心柱の違いによって大葉植物Pteropsidaと小葉植物Lycopsidaに分けて以来,中心柱の構造は維管束植物の分類にとって最も重要な形質と認められるようになった。 最近の知見も加えて中心柱の進化をまとめてみると次のようになる。… ※「Lycopsida」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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