The genus Plagiothecium (Plagiotheciaceae) in Europe - current state of knowledge, checklist and key to taxa.

Abstract

This manuscript presents current knowledge of the taxonomy, variability and distribution of taxa of the genus Plagiothecium in Europe. Currently the genus comprises 31 taxa: 17 species and 14 varieties. In this study I designated 10 lectotypes and proposes six new synonyms for the described taxa, in addition five new nomenclatural combinations: P.denticulatumvar.pseudosylvaticum, P.denticulatumvar.pungens, P.laetumvar.hercinicum, P.succulentumvar.cryptarum, and P.sylvaticumvar.immersum. Detailed descriptions and distribution data for each taxon, illustrations highlighting key taxonomic features and a diagnostic key are also provided to facilitate the identification of individual taxa.