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Ring-cupped Oak🌳
Quercus glauca
アラカシ
An evergreen tree of the Fagaceae family and one of the representative species of laurel forests. The upper half of the leaf margin has coarse serrations, which is the origin of its Japanese name 'ara-kashi' (rough oak).
Identification Points
- ✓葉の上半部に粗い鋸歯
- ✓葉裏は灰緑色〜粉白
- ✓どんぐりは横縞模様の殻斗
Habitat
本州（宮城・新潟以西）・四国・九州・沖縄の照葉樹林
Season
4〜5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