[Regnum Vegetabile] L. (1753), nom. inval. - plant kingdom see Kingdom Plantae Haeckel (1866)
   Class Diandria L. (1753), nom. inval.
     Order Diandria Monogynia L. (1753), nom. inval.
       Genus Circaea L. (1753)
         1 Circaea lutetiana L. (1753) - broadleaf enchanter's nightshade
         2 Circaea alpina L. (1753) - alpine circaea