Elymus (plant)
Elymus is a genus of perennial plants with approximately 150 species in the grass family, related to rye, wheat, and other widely grown cereal grains. "Elymus" is a cosmopolitan genus, represented by species across all continents of the world. Common names include couch grass, wildrye and wheatgrass. Many species once considered members of "Elymus" are now regarded as better suited to other genera: "Agropyron", "Anthosachne", "Brachypodium", "Cenchrus", "Crithopsis", "Heteranthelium", "Jouvea", "Kengyilia", "Leymus", "Psathyrostachys", "Stenostachys", "Taeniatherum", "Thinopyrum" etc. Species accepted by the Plants of the World Online as of 2021: