This fate is shared by oats ("Avena"), which also tolerate poorer conditions, and like rye, grow as a weed alongside wheat and barley. Derived from a wild species ("Avena sterilis"), it has thus come to be a crop in its own right. Once again paralleling wheat, rye and other cereals, oats have developed tough spindles which prevent seeds from easily dropping off, and other characteristics which also help in natural dispersal have become vestigial, including the awns which allow them to self bury.