Stachys officinalis, (L.) Trevisan

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 : 152

3. S. officinalis (L.) Trevisan , Prosp. FI. Euganea 26 (1842)

(5. betonica Bentham, Betonica officinalis L. ; incl. S. bulgarica (Degen & Nejc.) Hayek ).

Erect, subglabrous to densely hirsute perennial 15-100 cm. Leaves 30-120 x 15-50 mm, oblong to ovate-oblong, cordate at base, coarsely crenate or crenate-dentate. Verticillasters in a dense spike, sometimes interrupted below. Calyx 5-9(-12) mm; teeth J-f as long as tube. Corolla 12-18 mm, bright reddish-purple, rarely pink or white; tube exceeding calyx; upper lip entire. 2« = 16. Most of Europe northwards to C. Scotland, S. Sweden and N. W. Russia. Al Au BeBrBuCzDaGaGeGrHbHeHoHsHuItJuLuPoRm Rs (N, B, C, W, K, E) Su Tu [Fe No].