Ariocarpus is a remarkable genus of slow-growing, subterranean cacti native to Mexico and southwestern Texas, known for their fleshy, spineless, and tuberous roots that resemble stone or prehistoric fossils. Appreciated for their unique appearance and striking, fragrant flowers that bloom in the right conditions, Ariocarpus plants are highly prized by collectors. An interesting fact is that many species in this genus are endangered, making them both fascinating and environmentally significant additions to any cactus collection.