Blechnum amabile; a species of hard fern
A specific fern species native to Japan; primarily used in botanical and horticultural contexts.
Blechnum amabile is a fern that grows naturally on damp rocky slopes in mountainous areas.
Kanji spelling is rare and mainly found in botanical contexts; the word is usually written in kana.
The name likely derives from the shape of the fronds resembling a reed (筬, osa) used in weaving, but the exact origin is uncertain.