Pachycereus schottii

The senita of Organ Pipe Cactus National Monument. Apart from Organ Pipe, it is limited to Mexico.

Plant habit with saguaro at Organ Pipe Cactus National Monument, Pima County, Arizona, 5 Feb 2005. The Mexican border is only a hundred meters off to the left.

Closer view of a stem at Organ Pipe, 5 Feb 2005.