Various species: see species list

Most of the barrel cacti are of the genus Ferocactus, with the remainder belonging to genus Echinocactus.

References

• The species list is referenced in part from cactiguide.com which is in turn referenced from several books which are listed on that site. The principal book listed there is The Cactus Family by Edward F. Anderson, (2001).

Species list

• Ferocactus alamosanus
• Ferocactus chrysacanthus
• Ferocactus cylindraceus, California Barrel Cactus , Cliff Barrel, Compass Barrel, Compass Cactus, Desert Barrel, Golden-Spined Barrel, Spiny Barrel Cactus
• Ferocactus diguetii
• Ferocactus echidne, Sonora Barrel , Coville's Barrel Cactus, Emory's Barrel Cactus, Traveler's Friend
• Ferocactus emoryi, Sonora Barrel , Coville's Barrel Cactus, Emory's Barrel Cactus, Traveler's Friend
• Ferocactus fordii
• Ferocactus glaucescens
• Ferocactus gracilis, Fire Barrel Cactus
• Ferocactus hamatacanthus, Mexican Fruit Cactus , Texas Barrel Cactus, Turk's-Head Barrel Cactus
• Ferocactus herrerae, Twisted Barrel Cactus
• Ferocactus histrix, Electrode Cactus
• Ferocactus johnstonianus, Johnston's Barrel Cactus
• Ferocactus latispinus
• Ferocactus macrodiscus
• Ferocactus peninsulae
• Ferocactus pilosus, Mexican Lime Cactus , Viznaga De Lima
• Ferocactus pottsi
• Ferocactus rectispinus, Long Spined Barrel Cactus
• Ferocactus reppenhagenii
• Ferocactus robustus
• Ferocactus santa-maria, Santa-Maria Barrel Cactus
• Ferocactus schwarzii, Schwarz's Barrel Cactus
• Ferocactus townsendianus, Townsend Barrel Cactus
• Ferocactus viridescens, Coast Barrel Cactus , Keg Cactus, Green-stemmed Viznaga, San Diego Barrel Cactus, Sisal (unrelated to Sisal)
• Ferocactus wislizeni, Fishhook Barrel Cactus , Arizona Barrel Cactus , Candy Barrel Cactus, Southwestern Barrel Cactus