Mentha x, L.

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 : 184

6. M. x verticillata L. , Syst. Nat. ed. 10, 2: 1099 (1759)

( M. sativa L. ) ( M. aquatica x arvensis ).

Like 5 but usually more robust and often hairier; calyx 2-5~3-5(-4) mm, tubular, the teeth more or less triangular, acute. 2/7 = 42, 78, 84, 90, 96, 120, 132. M ost o f Europe, but absent from many o f the islands. Au?Az Be Br Bu Cz Da Fe Ga Ge?Gr Hb He Ho Hs Hu It Ju No Po Rm Rs (B, C, W,?K,?E) Su.

Usually sterile; the occasional highly fertile plants are probably the result of back-crossing with the parents. Often confused with 5 or hairy variants of 7.