- rattlesnake master, rattlesnake's master, button snakeroot, Eryngium yuccifolium - coarse prickly perennial eryngo of United States thought to cure rattlesnake bite
--1 is a kind of perennial
--1 is a member of Eryngium, genus Eryngium - button snakeroot, Eryngium aquaticum - coarse prickly perennial eryngo with aromatic roots; southeastern United States; often confused with rattlesnake master
--2 is a kind of herb, herbaceous plant
--2 is a member of Eryngium, genus Eryngium - blazing star, button snakeroot, gayfeather, gay-feather, snakeroot - any of various North American plants of the genus Liatris having racemes or panicles of small discoid flower heads
--3 is a kind of wildflower, wild flower
--3 is a member of Liatris, genus Liatris
--3 has particulars:dotted gayfeather, Liatris punctata; dense blazing star, Liatris pycnostachya