Melissa 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 : 162

23. Melissa L. 2

Perennial herbs. Verticillasters few- to many-flowered. Calyx campanulate, 2-lipped, 13-veined; upper lip flattened, 3-toothed; lower lip 2-toothed. Corolla 2-lipped, the tube curved and dilated above the middle, without a ring of hairs inside; upper lip erect or deflexed, sometimes slightly hooded, emarginate; lower lip 3-lobed. Stamens didynamous, included, convergent; anther-cells divergent. Style-branches subequal.