Monographs Details: Agrostis hyemalis var. scabra (Willd.) H.L.Blomq.
Authority: Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Description:Variety Description - Blooming later, June to November; spikelets more loosely arranged, the pedicels 0.5–5 (avg 2) mm; glumes 2–3 mm; Lab. to Alas., s. to Ga., Tex., and Mex. (A. scabra; A. h. var. tenuis)