Dig deeper at SERNEC, a consortium of southeastern herbaria.
Our annual species of Festuca are by some authors placed in the genus Vulpia; they have a single stamen (vs. perennial with 3 stamens) per the Vascular Plants of North Carolina website.
Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales
Flora of North America
Vulpia octoflora var. octoflora
Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Festuca octoflora var. octoflora
Southern Six-weeks Fescue
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Terry Holdsclaw tdh_v_octoflora_oct_0671b
May Lincoln County NC
Lemma awns 0.3-6(9)mm long; spikelets w 5-11(-more) closely imbricate florets, per Weakley's Flora.