フィールド日記

2021.01.12

オオバノイノモトソウ

裏道でオオバノイノモトソウを見つけました。近縁種のイノモトソウに似ていますが、より大型です。葉は胞子をつける胞子葉と胞子をつけない栄養葉の2種類があり、胞子葉の羽片は栄養葉の羽片に比べ、幅が狭くなっています。


胞子のう群は、葉のふちに沿ってついています。


I found this fern called "Oobano-inomotosou (オオバノイノモトソウ)" on the back road. They are similar to their close relative species called "Inomotosou (イノモトソウ)", but are larger. They have two types of leaves. One is a fertile leaf, which has spores. The other is a sterile leaf, which doesn't have spores. Their fertile leaves are narrower than their sterile leaves. You can see their sori are along the edge of the leaves.