…This group flourished from the Paleozoic to the Mesozoic eras, and today there are 9 to 10 genera and about 100 species. Ginkgophyta The stems are well-branched tall trees with hard wood. The sporangia are found in the axils of the short branches, and the gametophytes develop within the ovules. … *Some of the terminology that refers to the "Ginkgophyta" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…古生代から中生代にかけて繁栄した群で,現生は9~10属約100種。イチョウ植物門 茎はよく分枝する高木となり,材は硬木質。胞子囊は短枝の葉腋(ようえき)につき,配偶体は胚珠内で発達する。… ※「イチョウ植物門」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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