
Image: Wikimedia Commons (See link for license)
Brown Mustard🌼
Brassica juncea
カラシナ
A winter annual in the cabbage family. The seeds are the main source of mustard. The leaves are also eaten as a vegetable. Seiyō-karashina (naturalized after the Meiji era) forms vast yellow carpets on riverbanks in spring. Cultivated forms include takana, zha-cai, and nozawana.
Identification Points
- ✓Large pinnately lobed leaves forming a basal rosette
- ✓Bright yellow 4-petaled flowers in racemes
- ✓Long slender siliques
Habitat
Riverbanks, fields, roadsides (cultivated and naturalized)
Season
March to May (flowers)
Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Simple
Growth form
Herb
Petal count
4 petals
Flower color
Yellow
Flowering season
Spring
Habitat
Grassland
Phylogenetic Positionアブラナ科 →
Phylogenetic Position
Angiosperms > Eudicots > Core eudicots > Brassicales > Brassicaceae
Divergence Era
Late Cretaceous to Paleogene
Sources & References
📖Wikipedia 日本語版↗
🤖Claude AI生成(未確認)Wikipediaリードを根拠に生成。要確認。
AI-generated, needs verification