Leaf primordium (English spelling)

Japanese: leaf primordium(英語表記)leafprimordium
Leaf primordium (English spelling)

...The leaves of club moss have single veins.
[Formation]
Leaves grow laterally on the stem, but the leaf primordium forms near the apex of the stem, slightly below the growing point of the stem. When the leaf primordium grows a little, the upper and lower parts become clearly defined, and the lower leaf base forms the leaf sheath and stipules, while the upper leaf forms the leaf blade and petiole.

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ヒカゲノカズラ類の葉では脈は単生する。
[形成]
 葉は茎に側生するが,茎頂付近で茎の生長点よりやや下がった位置に葉原基leaf primordiumができる。葉原基は少し大きくなると上下の二つの部分がはっきりしてきて,下部の葉基からは葉鞘(ようしよう)と托葉,上部の上葉から葉身と葉柄がつくられる。…

※「leaf primordium」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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