**2.2 Taxonomy and nomenclature of** *Elymus elongatus*

Classification and nomenclature of wheatgrass species has been the subject of much taxonomic debate (Assadi Runemark, 1995; Mizianty et al., 1999; Murphy & Jones, 1999). Consequently, representatives of this genus are known by several scientific and vernacular names. Synonyms of *Elymus elongatus* (Host) Runemark (tall wheatgrass) include: *Agropyron elongatum* (Host) Beauv., *Elytrigia elongata* (Host) Nevski, *E. pontica* (Podp.) Holub, *Elymus varnensis* (Velen.) Runemark, *Lophopyrum elongatum* (Host) A. Löve and *Thinopyrum ponticum* (Podp.) Liu & Wang.
