Echinocereus Genus -- cactus family
Texas claret-cup cactus (Echinocereus coccineus var. paucispinus) -- in March -- San Xavier Mission, AZ red & pink
Texas claret-cup cactus (Echinocereus coccineus var. paucispinus -- in April -- Big Bend Ranch State Park, TX red & pink
spiny hedgehog cactus (Echinocereus dasyacanthus) -- in April -- Big Bend Ranch State Park, TX red & pink
Englemann's hedgehog cactus (Echinocereus englemannii) -- in March -- Organ Pipe Cactus National Monument, AZ red & pink
Mojave kingcup cactus (Echinocereus mojavensis) -- in May -- Canyons of the Ancients National Monument, CO red & pink
Mojave kingcup cactus (Echinocereus mojavensis) -- in May -- Yampa Bench Road, Dinosaur National Monument, CO red & pink
strawberry cactus (Echinocereus stramineus var. stramineus) -- in April -- Big Bend Ranch State Park, TX red & pink
hen-and-chickens (Echinocereus viridiflorus) -- in June -- South Valley Loop Trail, Lory State Park, CO green & brown
hen-and-chickens (Echinocereus viridiflorus) -- in May -- Pawnee National Grassland, CO
nylon hedgehog cactus (Echinocereus viridiflorus var. chloranthus) -- in April -- Chihuahuan Desert Nature Center, Tx green & brown
Correll's hedgehog (Echinocereus viridiflorus var. correllii) -- in April -- Chihuahuan Desert Nature Center, TX green & brown
small-flowered hedgehog (Echinocereus viridiflorus var. cylindricus) -- in April -- Chihuahuan Desert Nature Center, TX green & brown
rusty hedgehog cactus (Echinocereus viridiflorus var. russanthus) -- in April -- Chisos Mts., Big Bend National Park, TX red & pink