Ferocactus fordii

From Cactopedia

Ferocactus fordii
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Caryophyllales Family: Cactaceae Genus: Ferocactus Species: F. fordii
Binomial name
Ferocactus fordii Britton & Rose

Ferocactus fordii is also classified as Echinocactus fordii.

Wikipedia has an article on Ferocactus.