bat's wing fern; water fern
Refers to the fern species Histiopteris incisa, known as bat's wing fern or water fern. Botanical term.
The bat's wing fern is a fern that grows in damp places.
Katakana spelling is standard for this plant name; usually written in kana.
Rarely used kanji form.
The name likely derives from 湯ノ峰 (Yunomine, a place name) and 羊歯 (shida, fern), but the exact origin is uncertain.