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Water Chestnut
Trapa bicornis
トウビシ
A floating-leaved plant of the Lythraceae family (genus Trapa) that produces fruits larger than those of Trapa japonica with two horns. Native to China, its seeds are used as food.
Identification Points
- ✓浮葉はひし形でロゼット状
- ✓果実は両側に長い1対の角
- ✓葉柄に浮き袋状のふくらみ
Habitat
池沼・水田（中国原産、栽培）
Season
7〜9月（花）
3D Specimen Model
Kyushu University, Shikano Lab (CC0)
View on Sketchfab→Morphological TraitsAI-estimated, needs verification
Leaf type
Simple
Venation
Pinnate
Leaf margin
Entire
Petal count
3 petals
Leaf dissection
Undivided
Ovary position
Superior
Plant sex
Hermaphrodite
Phylogenetic Positionミソハギ科 →
Phylogenetic Position
Angiosperms > Eudicots > Core eudicots > Myrtales > Lythraceae
Divergence Era
Late Cretaceous to Paleogene (about 80–70 million years ago)
Sources & References
🤖Claude AI
AI-generated, needs verification