Cladophora (Cladgrass) - Cladophora

Japanese: シオグサ(汐草) - シオグサ（英語表記）Cladophora

A genus of green algae in the Cladophoraceae family that grows in both marine and freshwater environments, it is characterized by a single filamentous, branched body and cells with many nuclei and a reticulated chloroplast. It has been confirmed that this genus undergoes alternation of generations between gametophytes, which form and release gametes with two flagella, and sporophytes, which have the same external appearance but form and release zoospores with four flagella. This life cycle of homotypic alternation of generations is specifically called the Cladophora type.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

海にも淡水にも生育する緑藻シオグサ科の1属で，体は単列糸状で分枝をもつこと，および細胞は多数の核と網目状の葉緑体をもつことで特徴づけられる。この属では，2本の鞭毛をもつ配偶子を形成･放出する配偶体と，これと外形が同じであるが，4本の鞭毛をもつ遊走子を形成･放出する胞子体の間で世代交代を行うことが確かめられている。この同型世代交代の生活史の様式はとくにシオグサ型Cladophora typeと呼ばれる。

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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