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.
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.