Any of numerous plants of the genus Asclepias,having milky juice,usually opposite leaves,variously colored flowers grouped in umbels,and pods that split open to release seeds with downy tufts.

• 马利筋属植物一种马利筋属植物，有乳白色汁液，通常叶对生、花色各异且聚成伞状，果荚绽裂后落出带绒毛的种子