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
WEAKLEY'S FLORA (2/8/20):
Elymus glabriflorus +
FAMILY
Poaceae
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Elymus glabriflorus
FAMILY
Poaceae
INCLUDED WITHIN
Steyermark's Flora of Missouri (Yatskievych, 1999)
Elymus virginicus var. glabriflorus
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 029-25-002?:
Elymus virginicus
FAMILY
Poaceae
COMMON NAME:
Southeastern Wild-rye
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_elau2_001_lvd
Elymus glabriflorus var. australis