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East Asian Yellow Water-lily
Nuphar japonicum
コウホネ
A perennial herb of the Nymphaeaceae family that grows in ponds and slow-flowing water, sending thick rhizomes into the mud. In summer it produces yellow cup-shaped flowers above the water surface.
Identification Points
- ✓花は鮮黄色で径4〜5cm
- ✓葉は楕円形で水面に浮くか抽水
- ✓地下茎は太く白色
Habitat
本州・四国・九州の池沼・水路
Season
6〜9月（花）
3D Specimen Model
Kyushu University, Shikano Lab (CC0)
View on Sketchfab→Morphological TraitsAI-estimated, needs verification
Growth form
Herb
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Palmate
Leaf dissection
Undivided
Flower symmetry
Actinomorphic
Plant sex
Hermaphrodite
Latex
Present
Phylogenetic Positionスイレン科 →
Phylogenetic Position
Angiosperms > Basal angiosperms > Nymphaeales > Nymphaeaceae
Divergence Era
Early Cretaceous (ca. 110 Ma onwards)
Sources & References
🤖Claude AI
AI-generated, needs verification