Anderson's thorn bush
A large, perennial shrub to bush found in the southern parts of California and beyond, Lycium andersonii A. Grey is a member of the nightshade family. Armed with true thorns, these plants are difficult to handle without injuring one's hands. The plants produce many white to lavender flowers in the spring, which mature into small, orange-red berries later in the year. Though the fruit is technically edible, getting to it is often not worth the effort (or injury).