All Species in Ferocactus
- California Barrel Cactus (Ferocactus acanthodes subsp. acanthodes)
- California Barrel Cactus (Ferocactus acanthodes subsp. eastwoodiae)
- Candy Barrelcactus (Ferocactus wislizeni)
- Chihuahuan Fishhook Cactus (Ferocactus uncinatus)
- Emory's Barrel Cactus (Ferocactus emoryi)
- San Diego Barrelcactus (Ferocactus viridescens)