There is about 100 taxa of Echinocereus. The different species have a large range of colors from green to yellow, pink, orange, and red.
As is often the case in cactus genera, the bigger species will take full sun while the smaller species like some shade.
Species:
Echinocereus acifer
Echinocereus adustus
Echinocereus albispinus
Echinocereus engelmannii
Echinocereus fitchii
Echinocereus morricalii
Echinocereus pentalophus
Echinocereus polyacanthus
Echinocereus reichenbachii
Echinocereus subinermis
Echinocereus viridiflorus
Similar plants: