Dog tea fern - Dog tea fern

Japanese: イヌチャセンシダ - いぬちゃせんしだ
Dog tea fern - Dog tea fern

…When the leaves wither, the pinnae fall off, but the petiole and rachis remain, looking like a tea whisk, hence the Japanese name. Chasenshida has wings on both sides of the rachis, but the closely related Inuchaseshida has wings on the underside as well, making it three-winged, and is not found as far north as Chasenshida. [Iwatsuki Kunio]. …

*Some of the terminology explanations that mention "Inuchasenzida" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…葉が枯れると羽片は落ちるが,葉柄と羽軸がいつまでも残って茶筅(ちやせん)のようにみえるので,この和名がつけられた。チャセンシダは羽軸の両側に翼がつくが,近縁のイヌチャセンシダではさらに裏面にも翼がついて3翼性となり,チャセンシダほど北には分布しない。【岩槻 邦男】。…

※「イヌチャセンシダ」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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