Devil's Backbone, a is a succulent shrub belonging to the family Euphorbiaceae and with the botanical name Pedilanthus tithymaloides variegatus. It originates from the Americas and has alternate green leaves mottled (daang) and bordered with pale yellowish, and arranged on thick dark-green zigzag stems, that grow to about 50 centimeters in length.

Hence, it is in English also known as Zigzag Plant, among a variety of other names, while in Thai it is called sayaek daang.