pigeon's-foot

…The leaves are opposite and divided into three lobes, each of which is further divided into pinnate lobes, 3-10cm long and 2-5cm wide. Due to this shape, it is called frog's-foot or pigeon's-foot. From June to September, it produces slender, sparse spikes at the ends of the branches, and bears small, pale purple flowers. …

*Some of the terminology that mentions "pigeon's foot" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…葉は対生して3裂し，裂片はさらに羽状に分かれ，長さ3～10cm，幅2～5cm。この形からfrog’s‐footやpigeon’s‐footの英名がある。6～9月ころ，枝先に細長いまばらな穂状花序を作って，小さい淡紫色の花をつける。…

※「pigeon's-foot」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