A perennial plant(Spigelia marilandica) native to the southeast United States having flowers with a tubular corolla that is red outside and yellow inside. The rhizomes and roots were once used as a vermifuge.

• 驱虫草一种美国东南部的多年生植物（赤根驱虫草），具有带内黄外红的管状花冠的花朵。其根茎与根部曾被用来做驱虫药