Stachys swainsonii subsp. swainsonii

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 : 156

(a) Subsp. swainsonii :

Plant sericeous-pubescent or hirsute, the hairs more or less appressed. Lower leaves up to 30 mm. Verticillasters 2- to 6-flowered. 2n= 34. S.C. Greece (Parnassos).