Phyllotaxis

Japanese: phyllotaxis
Phyllotaxis

...the leaf blade is formed in the upper leaf, and is completed by repeated marginal growth. When the leaf unfolds, the already formed and folded parts elongate as the individual cells grow to form the leaf. The arrangement of the leaves on the shoot is called phyllotaxis (Figure 4).
[evolution]
Today it is generally accepted that there are two types of leaves.

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…葉身は上葉で原型がつくられ,辺縁生長がくり返されて完成され,葉が展開するときには,すでにできて畳み込まれていたものが,個々の細胞の生長につれて伸びてきて葉の形となる。なお苗条(シュート)の上での葉の配列のしかたを葉序phyllotaxisという(図4)。
[進化]
 葉には二つの種類があるというのが今日ほぼ定説となっている見方である。…

※「phyllotaxis」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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