Beilis annua subsp. annua

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 111

(a) Subsp. annua :

Leaves not more than 25 x 15 mm; capitula not more than 15 mm in diameter. 2n = 18. Dry, open habitats. Mediterranean region, Portugal.