Solanum xanti, known commonly as chaparral nightshade or San Diego nightshade, is a member of the genus Solanum. It is native to the southwestern United States and Baja California, Mexico, where it grows in chaparral, woodlands, forests, and other habitat. It is a perennial herb or subshrub producing a branching hairy stem up to about 90 centimeters in maximum height. The leaves are up to 7 centimeters long and are lance-shaped to oval, mostly unlobed except for occasional lobes at the bases of the blades. It bears an umbel-shaped inflorescence with many purple-blue flowers up to 3 centimeters wide. The fruit is a green berry 1 to 1.5 centimeters wide.