Ibervillea sonorae is a tuberous perennial plant in the Cucurbitaceae family known by the common names wereke, wareque, guarequi, and coyote melon. It is a highly variable species characterized by a large, succulent tuberous root, which in the dry sand of its native habitat resembles a gray, dust-covered boulder. Emerging from the root yearly are long, flexible liana-like shoots, which reach a length of three or more meters. This species is native to northwestern Mexico, being found in the states of Baja California, Baja California Sur, Sonora and Sinaloa.

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