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Japanese Grape Fern
Botrychium japonicum
オオハナワラビ
A winter-green fern of the Ophioglossaceae family with separate sterile and fertile fronds. Leaves emerge in autumn, overwinter, and disperse spores in spring.
Identification Points
- ✓栄養葉と胞子葉が別々に伸びる
- ✓栄養葉は3〜4回羽状に裂ける
- ✓胞子葉は穂状で直立
Habitat
本州・四国・九州の林床・草地
Season
10〜4月（出葉）／3〜4月（胞子）
3D Specimen Model
Kyushu University, Shikano Lab (CC0)
View on Sketchfab→Phylogenetic Positionハナヤスリ科 →
Phylogenetic Position
Vascular plants > Polypodiophyta > Ophioglossopsida > Ophioglossales > Ophioglossaceae
Divergence Era
Devonian to Carboniferous (approx. 360 million years ago onward)
Sources & References
🤖Claude AI
AI-generated, needs verification