m. M. X piperita L.citrata (Ehrh.) Briq.

Flowers in globose terminal heads, sometimes with some verticillate whorls distant from the terminal head. Leaves ovate, 2–8 cm long, serrate; petiole glabrous. Corolla dark lilac. Rhizomatous herb with characteristic lemon or eau-de-cologne scent. Coast. Escape from cultivation. Damp places. Introd. from Europe. Fl. summer–autumn. Lemon Mint, Eau-de-Cologne Min