…Glossopteris are simple leaves with secondary veins that become fine veins and form a net pattern. The Gigantopteridales of the Cathaysian flora in the Northern Hemisphere correspond to the Glossopteris of the Southern Hemisphere, which also have simple leaves with tertiary and quaternary veins that become fine veins and form a net pattern. In the Cathaysian flora, it is known that the tripinnate compound Emplectopteris evolved into the bipinnate compound Gigantonoclea , the monopinnate compound Bicoemplectopteris , and then the simple leaf Tricoemplectopteris . … *Some of the terminology that mentions "Gigantopteridales" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…グロッソプテリス類は単葉で2次脈が細脈となり網目をつくる。南半球のグロッソプテリス類に対応するのは北半球のカタイシア植物群のギガントプテリス類Gigantopteridalesで,同じく単葉で3次脈,4次脈が細脈となり網目をつくるのが特徴である。カタイシア植物群では,3回羽状複葉のエンプレクトプテリスが,2回羽状複葉のギガントノクレアGigantonoclea,1回羽状複葉のビコエンプレクトプテリスBicoemplectopterisへ,ついで単葉のトリコエンプレクトプテリスTricoemplectopterisへと進化したことが判明している。… ※「Gigantopteridales」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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