A flat-topped or rounded flower cluster in which the individual flower stalks arise from about the same point,as in the geranium,milkweed,onion,and chive.

• 伞形花序单个花茎大致上总从同一个地方长出的，顶端扁平或圆的花序，如天笠葵、乳草、洋葱和细香葱。