Lamium moluccellifolium, Fries

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 : 148

12. L. moluccellifolium Fries , Nov. FI. Suec. 72 (1819)

( L. hybridum subsp. intermedium Gams ).

Pubescent annual up to 40 cm. Leaves 10-50 x 10-60 mm, ovate-orbicular, crenate or crenate-dentate. Lower bracts about as long as wide, distinctly petiolate. Calyx 8-12 mm, the teeth slightly longer than tube. Corolla 14-20 mm, pinkish-purple; tube 10—15 mm, straight, slightly exceeding the calyx; upper lip 4-5-5 mm, entire; lateral lobes minute, linear; lower lip c. 4 mm, obcordate. Anthers hairy. 2zz = 36. Cultivated ground. N. Europe to c. 67° A. in Fennoscandia, and extending southwards to c. 52° 30' in Germany. Br D a Fa Fe Ge Hb No Rs (N, B) Su [Is Lu].

This appears to be an allopolyploid derived from 10 and 13 (Bernström, 1955).

■' 13. L. amplexicaule L. , Sp. Pl. 579 (1753). Sparsely to densely pubescent annual up to 30(-40) cm. Leaves 7-25 x 7-25 mm, orbicular or ovate-orbicular, crenate or lobed with obtuse lobes. Bracts up to 30 x 40 mm, usually wider than long, shallowly lobed, sessile or subsessile, cordate and somewhat amplexicaul. Calyx 5-7 mm, the teeth shorter or longer than tube. Corolla 14-20(-25) mm, pinkish-purple; tube 10-14 mm, straight, distinctly exceeding calyx; upper lip 3-5 mm, entire; lateral lobes minute or absent; lower lip 1-5-2-5 mm, obcordate. Anthers hairy. Cultivated ground. Almost throughout Europe. All except Fa Sb, but only naturalized in Is.