Calamagrostis canescens subsp. canescens

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1980, Flora Europaea. Volume 5. Alismataceae to Orchidaceae (Monocotyledones), Cambridge: Cambridge University Press : 237

(a) Subsp. canescens :

Awn slender, very short, arising from or near the notch in apex of lemma. Rhachilla-prolongation absent or minute. Throughout the range of the species.