One observer calls this highly variable species a “taxonomic nightmare,” and that starts with current attempts to lump it into the genus Stenocactus. Echinofossulocactus guerreanus is supposed to be the same as E. crispatus which is supposed to be the same as Stenocactus crispatus. Whatever. This is from northern and central Mexico, generally east of the Sierra Madre. The globose stem has wavy ridges in the body. The flowers are purplish white. We have seedlings in 4-inch pots.
