Dichotomous sympodium

Japanese: dichotomous sympodium(英語表記)dichotomoussympodium
Dichotomous sympodium

…When one branch of a bifurcation becomes stronger, and this is repeated, it becomes similar to a pseudoaxial or uniaxial branch. This is called a dichotomous sympodium. It is widely seen in ferns, including club moss and polytrichum, and the pinnate free veins of ferns also form from this branch. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…二叉分枝でも一方が強大になって,これがくり返されると仮軸分枝や単軸分枝に似てくる。これを二叉状仮軸分枝dichotomous sympodiumという。ヒカゲノカズラやクラマゴケをはじめシダ植物に広くみられ,シダ類の羽状遊離葉脈もこの分枝でできる。…

※「dichotomous sympodium」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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