Agrostis congestiflora, Tutin & E. F. Warburg

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 : 235

23. A. congestiflora Tutin & E. F. Warburg , Jour. Bot. (London) 70: 43 (1932).

Slender perennial, without stolons; stems 5-35 cm, rough or smooth. Leaves flat or involute, scabridulous; ligule 0-5-5 mm. Panicle 2-6(-8-5) cm; branches erecto-patent at anthesis, suberect afterwards, aculeolate, 1-2 times branched, short and unequal; pedicels densely aculeolate. Spikelets 2-3 mm, greenish to purplish. Glumes lanceolate. Lemma c. | as long as glumes, the lateral veins more or less raised in the distal | - |; awn up to 4 mm, arising in the lower rarely absent; callus with hairs c. 0-3 mm or almost absent. Palea f - f as long as lemma. Anthers 0-6-1 mm. • Açores. Az.