Observation of the month: Fish-Hook Cactus

Graham's Fishhook Cactus, Mammillaria grahamii var. grahamii

Fish-hook Cactus - Colorado National Monument (U.S. National Park Service)

Barrel (Fishhook) Cactus - Grown By You

The Complete Common Fishhook Cactus Plant Care Guide: Water, Light & Beyond

Arizona Fishhook Pincushion, Often overlooked, the Arizona …

Fishhook Barrel Cactus Seeds – Gene's Greens & Aquatics

The Complete Common Fishhook Cactus Plant Care Guide: Water, Light & Beyond

Vegetation Around Las Vegas, Common Fishhook Cactus (Mammillaria tetrancistra)

Clover's Fishhook Cactus (Sclerocactus cloverae) · iNaturalist

Mammillaria thornberi Orcutt, Cluster fishhook cactus (World flora) - Pl@ntNet identify

Sclerocactus polyancistrus (Engelm. & J.M.Bigelow) Britton & Rose, Mohave fishhook cactus (World flora) - Pl@ntNet identify