点头洋葱

Nodding onion is a perennial plant in the family Alliaceae.This plant grows in dry woods, rock outcroppings, and prairies.This species is cultivated for its attractive flowers.点头洋葱是菊科（Alliaceae）的多年生植物，该植物生长在干燥的木材，岩石露头和大草原中。 Allium cernuum form major has larger plants and larger flowers than the normal species.大葱葱比正常种类的植物更大，花朵更大。