Saguaro and Wislizenus' Senna aka: Shrubby Senna, Shrubby Cassia (Senna wislizeni), in full bloom, Santa Catalina Mountains, Tucson, Arizona
Blooming Saguaro Cactus (Carnegiea gigantea), Tucson, Arizona, USA
Blooming Saguaro Cactus (Carnegiea gigantea), Catalina Mountians in the distance, Tucson, Arizona, USA
