Cryptic speciation revealed in Scandinavian Racomitrium lanuginosum (Hedw.) Brid. (Grimmiaceae)

Introduction. Within Racomitrium Sect. Racomitrium, several species are distinguished in the Southern Hemisphere, but only the variable R. lanuginosum (Hedw.) Brid. exists in the north. Plants deviating from the common R. lanuginosum phenotype in leaf orientation and in almost entire or weakly dentate hair-point margins suggest that more than one species may exist in this region.Methods. Sixty-five specimens of R. lanuginosum, including eleven...