前ぜん葉よう体たい

noun

prothallium

Botanical term for the gametophyte stage of ferns and similar plants; a small, often heart-shaped structure.

• シダの前ぜん葉よう体たいは湿しめった場ば所しょでよく見みられる。

  Fern prothallia are often found in damp places.