Ageratina calaminthifolia

A shrubby Ageratina found in the Sierra Madre Occidental of Mexico.

Pseudanthia at Valle de los Monjes near Creel, Chihuahua, Mexico, 7 Sep 2009.

Side view of pseudanthia at Valle de los Monjes, 7 Sep 2009.

Cauline leaves at Valle de los Monjes, 7 Sep 2009.

Plant habit, Valle de los Monjes, 7 Sep 2009.