Prunella grandiflora subsp. grandiflora

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 : 162

(a) Subsp. grandiflora :

Leaves cuneate at base, not lobed; inflorescence not more than 5 cm. Calcicole. Throughout the range of the species, except S. Portugal and S. W. Spain.