Solanum nigrum aka Black Nightshade

Solanum nigrum, also known as European black nightshade or blackberry nightshade, is a flowering plant native to Eurasia but has been introduced in various regions including the Americas, Australasia, and South Africa. It is often mistakenly referred to as other "black nightshade" species. This fast-growing annual or biennial plant can be found in woodlands or areas with disturbed soil. Its leaves are broadly ovate with wavy edges, and its small white star-shaped flowers have five petals and yellow anthers. After flowering, clusters of round dark green berries appear, turning matt black when ripe. In some areas, the ripe berries and cooked leaves of certain edible strains are used as food, and various parts of the plant are utilized in traditional medicine. Black nightshade has a long history, being mentioned by Pliny the Elder and other herbalists, and has been recorded in deposits from the Paleolithic and Mesolithic era in ancient Britain. Carl Linnaeus described six varieties of Solanum nigrum in 1753. While it is native to most of England, it becomes rarer in the north and is localized in Wales. It is a troublesome weed in agriculture and horticulture, growing on a wide range of soils but favoring nitrogen-rich soil. Black nightshade is known for its variability, and certain populations have even developed resistance to the herbicide atrazine.