1. (noun) perennial bushy herb of central and southern United States having white flowers with green centers and often purple crest; similar to Seneca snakeroot

• polygala alba

1. (noun) dried root of two plants of the genus Polygala containing an irritating saponin

• root

2. (noun) perennial bushy herb of central and southern United States having white flowers with green centers and often purple crest; similar to Seneca snakeroot

• milkwort