Heteromorphic spores

…Akinete are specialized cells for asexual reproduction that resemble spores. When all the cells produced are the same shape, they are called homospores, and when there are two types of spores based on size, they are called heterospores. The larger spores are called megaspores, and the smaller spores are called microspores. Heterospores are not only different in size, but also in sex, and megaspores grow into female gametophytes and microspores into male gametophytes. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…アキネートakineteは胞子に似た無性生殖のための特殊な細胞である。つくられる細胞がすべて同形のものを同形胞子homospore，大きさによって2種類ある胞子を異形胞子heterosporeといい，大きい方の胞子を大胞子megaspore，小さい方の胞子を小胞子microsporeという。異形胞子は単に形の大小だけでなく，性のちがいとも一致しており，大胞子は生長して雌性配偶体に，小胞子は雄性配偶体になる。…

※「異形胞子」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