Euphorbia tithymaloides (Redbird cactus or Devil's backbone; syn. Pedilanthus tithymaloides) is a succulent spurge. In the wild, it grows in North America and Central America, but it is also kept as a houseplant. The cyathia bracts of Euphorbia tithymaloides are pinkish-red of colour, and resemble small birds, whence its name. It has distinctive zig-zag stems, and comes in both green and variegated forms. Leaves are pointed ovals about 2 inches long. They can grow to about 6 feet tall.