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Sawtooth Oak🌳
Quercus acutissima
クヌギ
A representative deciduous tall tree of satoyama landscapes. Produces large acorns. Famous for its sap flow, which attracts rhinoceros beetles and stag beetles. Together with Q. serrata, it has been used for charcoal and firewood production.
Identification Points
- ✓Narrow leaves with sharp spine-tipped serrations along the margins
- ✓Large round acorns with recurved cupule scales
- ✓Sap oozes from the bark
- ✓Attracts rhinoceros beetles and stag beetles
Habitat
Secondary woodlands, satoyama
Season
Year-round (yellow autumn foliage in October to November)
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
Serrate
Leaf shape
Linear
Growth form
Tree
Evergreen/Deciduous
Deciduous
Petal fusion
No petals
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
AI-generated, needs verification