Stachys germanica subsp. germanica

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 : 153

(a) Subsp. germanica :

Lowest bracts cuneate at base, widest above the base. Calyx-teeth c. J as long as tube. Almost throughout the range o f the species.