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Japanese Chinquapin🌳
Castanopsis sieboldii
スダジイ
An evergreen tree of the Fagaceae family and a representative species of warm-temperate laurel forests. It produces slender acorns in autumn that can be eaten raw.
Identification Points
- ✓葉裏は銀白色〜金褐色の鱗片に覆われる
- ✓葉縁の上半部にゆるい鋸歯
- ✓細長いどんぐりは殻斗に完全に包まれる
Habitat
本州（福島以西）・四国・九州・沖縄の照葉樹林
Season
5〜6月（花）／10〜11月（果実）
3D Specimen Model
Kyushu University, Shikano Lab (CC0)
View on Sketchfab→Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Pinnate
Leaf margin
Entire
Petal count
4 petals
Stipules
Present
Ovary position
Inferior
Stamen count
3-4
Phylogenetic Positionブナ科 →
Phylogenetic Position
Angiosperms > Eudicots > Fagales > Fagaceae
Divergence Era
Late Cretaceous (approx. 90 million years ago onward)
Sources & References
🤖Claude AI
AI-generated, needs verification