Melampyrum arvense, 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 : 254

3. M. arvense L. , Sp. Pl. 605 (1753)

(incl. M. argyrocomum Fischer ex Steudel ).

Stem 15-50 cm. Leaves 2-15 mm wide, lanceolate, entire or toothed. Spike cylindrical; bracts green, whitish or reddish-pink, ovate-lanceolate, erect, pinnatifid, not folded. Calyx 15-18 mm; tube uniformly and densely strigulose; teeth 9-12 mm, equal. Corolla 20-25 mm, purplish-pink, marked with yellow at the throat and sometimes on the lower bp; lower bp with upturned margins; throat closed. 2n= 18. Europe, from England and S. W. Finland southwards to N. Spain, C. Italy and Turkey. Al Au Be Br Bu Co Cz Da Fe G a Ge He Ho Hs Hu It Ju Po Rm Rs (B, C, W, E) Su Tu.

Ecotypic variants:

Autumnal: M. pseudobarbatum Schur , Verh. Mitt. Siebenb. Ver. Naturw. 4: 56 (1853).

Aestivai: M. semleri Ronniger & Poeverlein , Allgem. Bot. Zeitschr. 13: 179 (1907).

Montane: M. arvense subsp. schinzii Ronniger in Schinz & R. Keller, FI. Schweiz ed. 3, 1: 580 (1909).

Segetal: type of the species.