A native raspberry? Yes, and it tastes great! The fruit of Rubus leucodermis is 1?1.2 cm diameter, reddish-purple, and dark blue to nearly black when ripe, and can be confused with blackberries.
It is closely related to Datura, belonging to the same nightshade family, solanaceae. Brugmansia blooms dangle like great trumpets or bells while Datura blooms stand erect.