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Geji-geji Fern
Phegopteris decursivepinnata
ゲジゲジシダ
A summer-green fern of the Thelypteridaceae family named because the small pinnae along its rachis resemble the legs of a house centipede (gejigeji). It forms colonies on forest floors.
Identification Points
- ✓葉軸に羽片が翼状に流れる
- ✓葉は2回羽状深裂
- ✓夏緑性で冬は枯れる
Habitat
本州・四国・九州の山地の林床
Season
5〜10月（葉）
3D Specimen Model
Kyushu University, Shikano Lab (CC0)
View on Sketchfab→Phylogenetic Positionヒメシダ科 →
Phylogenetic Position
Vascular plants > Polypodiophyta > Polypodiopsida > Polypodiales > Thelypteridaceae
Divergence Era
Cretaceous (ca. 90 million years ago–)
Sources & References
🤖Claude AI
AI-generated, needs verification