Leonurus 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 : 149

13. Leonurus L. 1

Biennial or perennial herbs. Verticillasters many-flowered, crowded or more or less distant. Calyx campanulate, 5- or 10- veined, with 5 subequal spinose teeth. Corolla 2-lipped; tube shorter than calyx, not dilated at throat; upper lip hooded; lower lip 3-lobed. Nutlets trigonous, truncate and hairy at apex.

Literature: J. Holub, Nov. Bot. Horti Bot. Univ. Carol. Prag. 2: 24-25 (1961). E. Jo p a, Studii Cere. §ti. Cluj 3-4: 1-10 (1951).

Leaves digitately 3- to 7-lobed; corolla 8-12 mm, distinctly exceeding calyx 1. cardiaca Leaves entire, coarsely and irregularly crenate or toothed; corolla

5-7 mm, not or scarcely exceeding calyx 2. marrubiastrum