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Image: Wikimedia Commons (See link for license)
Rapeseed🌼
Brassica napus
セイヨウアブラナ（菜の花）
A crop of European origin, important as the source of canola (rapeseed) oil. Produces bright yellow flowers in spring that blanket fields. Known in Japan as 'nanohana,' this introduced plant creates iconic spring landscapes along riverbanks and farmland.
Identification Points
- ✓Bright yellow 4-petaled flowers
- ✓Flowers arranged in a cruciform pattern (characteristic of Brassicaceae)
- ✓Cauline leaves clasp the stem
- ✓Fruits are long narrow pods (siliques)
Habitat
Farmland, riverbanks, fields
Season
March to May (flowers)
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
Herb
Petal count
4 petals
Petal fusion
Free
Flower color
Yellow
Flowering season
Spring
Phylogenetic Positionアブラナ科 →
Phylogenetic Position
Angiosperms > Eudicots > Core eudicots > Brassicales > Brassicaceae
Divergence Era
Late Cretaceous to Paleogene
Sources & References
AI-generated, needs verification