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Buckwheat🌸
Fagopyrum esculentum
ソバ
An annual herb that is the source of Japan's traditional soba noodles. Belonging to Polygonaceae rather than Poaceae, it is a 'pseudocereal' whose seeds are ground into flour for noodles and sobagaki. It grows well even on poor soils in mountainous areas and is deeply tied to Japanese food culture, including New Year's Eve soba and regional traditions of Shinshu and Izumo.
Identification Points
- ✓Small white to pale pink five-petaled flowers densely clustered in corymbs
- ✓Leaves are hastate (arrowhead-shaped) and alternate
- ✓Fruit is trigonous (triangular) and dark brown
- ✓Stems often have a reddish tinge
Habitat
Fields, highlands, and poor-quality farmland
Season
Spring sowing: April–May; summer sowing: July–August; harvested in 60–70 days
Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Pinnate
Leaf margin
Entire
Leaf shape
Ovate
Growth form
Herb
Petal fusion
No petals
Habitat
Cultivated
Leaf dissection
Undivided
Flower symmetry
Actinomorphic
Ovary position
Superior
Phylogenetic Positionタデ科 →
Phylogenetic Position
Angiosperms > Eudicots > Caryophyllales > Polygonaceae
Divergence Era
Late Cretaceous to Paleogene
Evolution Notes
Polygonaceae belongs to Caryophyllales and is phylogenetically distant from true cereals (Poaceae). The center of origin is considered to be Central Asia to southwestern China.
View on evolution timeline →Sources & References
AI-generated, needs verification