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Nasturtium
Tropaeolum majus
ノウゼンハレン
An annual herb native to South America. Characterized by round peltate leaves and vivid orange, yellow, and red flowers; cultivated worldwide as an ornamental and edible plant. Both flowers and leaves have a peppery flavor and are used in salads.
Identification Points
- ✓Leaves round and peltate (petiole attached at center)
- ✓Flowers orange to red to yellow with a long rear spur
- ✓Both flowers and leaves have a mustard oil-like peppery flavor
Habitat
Flower beds and planters
Season
May–July, September–October (flowers)
Morphological TraitsAI-estimated, needs verification
Growth form
Herb
Flower color
Orange
Habitat
Cultivated
Venation
Palmate
Petal count
Many
Ovary position
Superior
Plant sex
Hermaphrodite
Compound type
Palmate
Stamen count
5
Phylogenetic Positionノウゼンハレン科 →
Phylogenetic Position
Angiosperms > Eudicots > Core Eudicots > Brassicales > Tropaeolaceae
Divergence Era
Late Cretaceous to Paleogene (ca. 70 million years ago)
Evolution Notes
Tropaeolaceae belongs to Brassicales; the spurred flowers demonstrate coevolution with long-tongued insects such as hawk moths.
View on evolution timeline →Sources & References
AI-generated, needs verification