Cooksonia

Japanese: Cooksonia
Cooksonia

…Some scholars believe that the larger Mayor species is the sporophyte and the smaller Gimbonii species is the gametophyte. Cooksonia , reported from Wales in the UK, is older than Rhynia (late Silurian) and is the oldest land plant. It is smaller than Rhynia, about 10 cm long, and has broad sporangia at the tips of bare, bifurcated branches. …

*Some of the terminology that mentions "Cooksonia" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…大型のマヨール種が造胞体で,小型のギンボニイ種が配偶体であると考える学者もある。イギリスのウェールズから報告されたクックソニアCooksoniaはライニアより古く(シルル紀末),最古の陸上植物である。これはライニアより小型で10cmくらい,二叉分枝する裸枝の先端に幅広の胞子囊をもっている。…

※「Cooksonia」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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