Dig deeper at SERNEC, a consortium of southeastern herbaria.
This species was resurrected by J.J.N. Campbell in 2000, so botanists are now figuring out how best to tell it from E. virginicus per the Vascular Plants of North Carolina website.
Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales
Steyermark's Flora of Missouri (Yatskievych, 1999)
Elymus virginicus var. glabriflorus