A tall dioecious plant (Aruncus dioicus) native to the eastern United States,having bipinnately compound leaves and a large panicle of small white flowers

• 假升麻；绣线菊属植物（假升麻属）的一高大雌雄异株的植物，产于美国东部，二次羽状复叶，由小白花构成的复总状花序