red darnel
Webster's Dictionary (GCIDE)
Ray grass \Ray" grass`\ (r[=a]" gr[.a]s`). [Etymol. of ray is uncertain.] (Bot.) A perennial European grass (Lolium perenne); -- called also rye grass, and red darnel. See Darnel, and Grass. [1913 Webster]
Italian ray grass or Italian rye grass. See Darnel, and Grass. [1913 Webster]