Teucrium scordium subsp. scordium

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 : 132

(a) Subsp. scordium

( T. scordium subsp. palustre P. Foum. ):

Stolons usually with normal foliage-leaves. Leaves of the main stem narrowed to the base; leaves of lateral branches cuneate at base and toothed in the upper part. From N. Spain, N. Italy and Bulgaria northwards.