ferocactus genus --- cactus family

California barrel cactus (Ferocactus cylindraceus) -- in March --  Organ Pipe Cactus National Monument, AZ       yellow & orange  AZ-SRN

glaucous barrel cactus (Ferocactus glauescens) -- in April -- Chihuahuan Desert Nature Center, TX   yellow & orange    TX-W

Mexican lime cactus (Ferocactus pilosus) -- in April -- Chihuahuan Desert Nature Center, TX    yellow & orange  TX-W

fishhook barrel cactus (Ferocactus wislizenii) -- in July -- Bosque del Apache National Wildlife Refuge, NM      yellow & orange   NM-S