Ageratina rothrockii (Rothrock's snakeroot)[3] is a North American species of plants in the family Asteraceae.

[4][5] Ageratina is derived from Greek meaning 'un-aging', in reference to the flowers keeping their color for a long time.

This name was used by Dioscorides for a number of different plants.

[6] The species is named for American botanist and forester Joseph Rothrock, 1839–1922.

[7] Data related to Ageratina rothrockii at Wikispecies