Hedeoma dentatum Torr.
A species much like the more common Hedeoma oblongifolium with but sharply toothed leaves. Found in the U.S. in southeastern Arizona & southwestern New Mexico.
A verticil in Clanton Draw, Peloncillo Mountains, Hidalgo County, New Mexico, 26 Aug 2007.
A cauline leaf in Clanton Draw, 26 Aug 2007.