Barnacle geese (Branta leucopsis) were assumed to be developed from goose barnacles (Pedunculata) by spontaneous generation, as nests were never found in temperate Europe. Additionally, goose barnacles were thought to be attached to branches before falling in the water because goose barnacles were often found on driftwood. Wood engraving depicting a “goose-tree” from John Gerard’s (1597) Herball or Generall Historie of Plantes.