…Sexual reproduction is by eggs and sperm, and asexual reproduction by zoospores. The order Oedogoniales was established because of the characteristics that both swimming sperm and zoospores have numerous flagella arranged in a crown-like shape at the tip, and because they undergo a unique pattern of somatic cell division not seen in other green algae. This order includes the family Oedogoniaceae, which includes the genus Oedogonia, which has unbranched filaments, as well as two genera: Bulbochaete , which has stinging hairs on the apical cells of the branching filaments, and Oedocladium , which has no stinging hairs on the apical cells. In Japan, about 10 species of Bulbochaete are known, but only one species of Oedocladium is known. … *Some of the terminology explanations that mention "Bulbochaete" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…有性生殖は卵と精子,無性生殖は遊走子により行われるが,遊泳性の精子と遊走子がともに先端に王冠状に配列する多数の鞭毛をもつこと,および他の緑藻には見られない独特の様式の体細胞分裂を行うことの特徴により,サヤミドロ目Oedogonialesが創設されている。この目にはサヤミドロ科の1科が含まれ,それには,分枝のない糸状体のサヤミドロ属のほかに,分枝する糸状体の先端細胞に刺毛をもつブルボケーテ属Bulbochaeteと先端細胞に刺毛のないエドクラディウム属Oedocladiumの2属が所属する。日本では,ブルボケーテ属は約10種知られるが,エドクラディウム属は1種知られるに過ぎない。… ※「Bulbochaete」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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