Christmasberry gets its common name from the bright red, egg-shaped berries that it produces in abundance in December. It has also been referred to as Carolina desert-thorn, which is a reference to the occasional thorns borne on its branches. The nectar of the flowers attract a variety of butterflies and moths. The berries, while toxic to some animals, are a favorite food source for many birds. Christmasberry is a close relative of the Goji berry (Lycium barbarum, Lycium chinense).