Stenocactus crispatus is now considered by the scientific community as a species which has within it a large degree of diversity, creating what Anderson called "a taxonomic nightmare." This means that it now includes a large number of former species and that the varietal status of this plant is questionable. But for the collector, a notation that this is a "long spined form" is probably helpful. Perhaps Stenocactus crispatus (long spines). But whatever you call them, they're real beauties.