a plant (Spigelia marilandica) of the logania family, with tufted stems and red flowers with yellow throats, native to the SE U.S.
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. Also called wormgrass.
(usually uncountable, plural pinkroots)