New combinations in six genera of the British flora

The adoption of a molecular basis for the classification of the flora of the British Isles introduces the need for numerous new combinations. Many of these have been made by other authors for their particular purposes, but the following appear so far to be lacking. 1. Roemeria Medik. (Papaveraceae) It was shown by Morales et al. (1988) that our two prickly-fruited poppies have the pollen-type of the genus Roemeria rather than that of Papaver L., and molecular studies have confirmed this relationship. Morales et al.made the combination for Papaver argemone L. under Roemeria, but that for P. hybridum L. appears to be still wanting. The epithet hybrida is already taken in Roemeria, so the next earliest specific name has to be used as the basionym. Roemeria hispida (Lam.) Stace, comb. nov. Basionym: Papaver hispidum Lam., Fl. Franç. (Lamarck) 3: 174 (1779) Synonym: Papaver hybridum L. 2. Eythranthe Spach (Phrymaceae) Molecular data show that Mimulus L. should be split in order to maintain monophyletic genera (Barker et al., 2012; Nesom, 2012). All our taxa now belong to the genus Erythranthe, in which the following new combinations are required. Erythranthe x burnetii (S. Arn.) Silverside, comb. nov. Basionym: Mimulus x burnetii S. Arn., Gard. Chron., ser. 3, August 1