Agropyron caninum var. hornemannii (W.D.J. Koch) Pease & A.H. Moore

Agropyron caninum var. hornemannii (W.D.J. Koch) Pease & A.H. Moore is a synonym sensu FNA Ed. Comm., 2007 of:

Elymus trachycaulus (Link) Gould ex Shinners subsp. trachycaulus, an accepted subspecies name sensu FNA Ed. Comm., 2007.