Stipa pennata subsp. pennata

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 : 248

(d) Subsp. pennata :

Lemma usually 18-19 mm, with prominent auricles at the insertion of the awn, the ventral line of hairs ending up to 4 mm below the base of the awn, often interrupted; awn usually 23-28 cm, the column glabrous and smooth. • France and Germany.