1) Buckwheat 2) Dicot genus 3) Genus fagopyrum 4) Magnoliopsid genus 
Fagopyrum contains 15 to 16 species of plants, including two important crop plants, Buckwheat or Fagopyrum esculentum, and Tartary buckwheat or Fagopyrum tataricum. They have similar uses, and are classed as pseudocereals, because they are used in the same way as cereals but do not belong to the grass family Poaceae. Within Fagopyrum, the cultivat...
[n] - buckwheat
genus Fagopyrum noun buckwheat; in some classifications included in the genus Polygonum