Tithonia fruticosa

A shrubby plant found in the Sierra Madre Occidental, Mexico.

Plant habit in Barranca de Batopilas, Sierra Madre Occidental, 22 Mar 2007.

Pseudanthia in Barranca de Batopilas, 22 Mar 2007.

Cauline leaves & immature pseudanthium in Barranca de Batopilas, 22 Mar 2007.