Irrwurz
The Irrwurz (German: [ˈɪʁˌvʊʁts]), Irrwurzel (both "astray root"; pl. Irrwurzen or Irrwurzeln) or Irrkraut ("astray herb"; pl. Irrkräuter) is a legendary plant from German-speaking countries. In France it is known as herbe d'égarement ("herb of befuddlement"; pl. herbes d'égarement) among other names. A Celtic equivalent is the stray sod.