cup plant

cup-plant的词性：
n.（名词）

1. A coarse perennial herb (Silphium perfoliatum) in the composite family, native to the central and southeast United States and having showy radiate flower heads of yellow flowers and opposite leaves whose bases fuse to form a cup around the stem.
杯形草：一种菊科多纤维的多年生草本植物（杯形草） ，原产于美国中部和东南部，它开有黄色花朵并具有绚丽的辐射状头状花序，其对生叶的基部结合起来环绕茎干形成杯状