Next up on our list of planted species alphabetically is Ageratina altissima, or white snakeroot. … I feel a bit intimidated tackling this one, as it’s the first member of the Asteraceae family that I’ve written about. Asteraceae is an enormous and complex family – but we’ll get to that. By the Numbers Species: Ageratina altissima (formerly Eupatorium rugosum) Common name(s): white snakeroot, richweed, white sanicle Family: Asteraceae Seed source(s):