Wild Coffee (psychotria nervosa) is a native shrub here in Florida. It is such a lovely addition to nature as it acts as a natural butterfly and honeybee habitat as well as berry-eating bird food. Though the berries do not contain caffeine, they can be roasted and brewed. Medicinally, wild coffee has been used to treat animal and insect bites (anti inflammatory, antibacterial, and antihemorrhagic) as well as ulcers and food poisoning. It is also rumored to contain a mild hallucinogenic.
I tasted a few of the berries and they are surprisingly edible! Mildly sweet and pulpy.