|Enchanter's Nightshade - Circaea lutetiana|
Despite it's common name, it's not actually in the Nightshade family (Solanaceae), which contains many famous and infamous plants (tomato, potato, belladonna, and tobacco to name a few). It's a member of the Evening Primrose family(Onagraceae) which is a family of plants that in general are not very famous or infamous.
This plant was supposedly one used by the sorceress Circe of Greek mythology to perform magic. Both the common name, Enchanter's Nightshade, and the genus name, Circaea, come from this association. One thing Circe was known for was turning men into animals.