Elymus trachycaulus subsp. major (Vasey) Tzvelev
Elymus trachycaulus subsp. major (Vasey) Tzvelev 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.