hordeum pratense

from The Collaborative International Dictionary of English v.0.48

Rie \Rie\, n.
   See {Rye}. [Obs.] --Holland.
   [1913 Webster]

   {Rie grass}. (Bot.)
   (a) A kind of wild barley ({Hordeum pratense}). --Dr. Prior.
   (b) Ray grass. --Dr. Prior.
       [1913 Webster]