Roldana hartwegii

A principally Mexican species entering the United States peripherally in southeastern Arizona and the Big Bend region of Texas. Previously included in the genus Senecio as S. carlomasonii.

Pseudanthia at Valle de los Monjes near Creel, east slope of the Sierra Madre Occidental, Chihuahua, Mexico, 7 Sep 2009. Photographed on a trip with the American Penstemon Society.

Cauline leaf at Valle de los Monjes near Creel, 7 Sep 2009.

A flowering stem at Valle de los Monjes near Creel, 7 Sep 2009.