Purple Berry Nightshade Family. On the edible end of the nightshade family are two of Americas most popular foods. Leaves are dark green to purple-tinged.

Solanum dulcamara Solanaceae Family. Is another small black nightshade berry sold commercially. Dulcamara climbing nightshade or European bittersweet.
Plants grow to 2 m 7 ft tall with ovate leaves 18 cm 7 in long.
The berry that a common nightshade plant produces is green but in time turns a deep black color. The mature deep blue or purple berries are sometimes used for making jams and pies. No doubt it is often confused as an adult with the S. Its ripe berries and edible leaves are cooked.