Lolium rigidum subsp. rigidum

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 : 154

(a) Subsp. rigidum

( L. strictum C. Presi ):

Rhachis (0-5—) 1—1-5 (-2) mm wide at lowest nodes of the inflorescence. Glumes herbaceous to somewhat indurate. Lemma 4-5-8-5 mm. 2n = 14. Almost throughout the range of the species.