A perennial herb (Caulophyllum thalictroides) of eastern North America, having a ternately compound leaf, small yellow-green or purplish flowers, and blue berrylike seeds.

• 蓝籽类叶牡丹：北美东部产的一种多年生草本植物（蓝籽红毛七红毛七属），有三出复叶、黄绿色或紫色小花和类似蓝莓的种子