Linaria glauca subsp. glauca

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 235

(a) Subsp. glauca ;

Glabrous annual. Pedicels shorter than bracts. Seeds 1 -2-1-5 mm; disc smooth or very slightly tuberculate; wing c. 0-2 mm wide, black. C. Spain.