For example : Amaranthus retroflexus L. or Passer domesticus ( Linnaeus , 1758 ) - the latter was originally described as member of the genus Fringilla , hence the parentheses . For example : ( plant ) Amaranthus retroflexus L. , and ( animal ) Passer domesticus ( Linnaeus , 1758 ) â `` the latter was described by Linnaeus as Fringilla domestica .