An annotated check-list of the Hepaticae and Anthocerotae of Europe and Macaronesia

Abstract

In Europe and Macaronesia 453 species of Hepaticae (Marchantiopsida, Liverworts) are recognized; 33 of these are confined to Macaronesia. The total species complement is assigned to 105 genera (of which four are confined to Macaronesia: Acanthocoleus R.M.Schust., Cheilolejeunea (Spruce) Schiffn., Mnioloma Herzog and Tylimanthus Mitt.). The genera are subdivided into subgenera and sections where sound natural groupings of species are recognizable. Two new subgenera and a new section for Asterella P.Beauv. are proposed. Correct author citations for a number of sectional names are given following strict interpretation of Art. 22.1, including the new combination Marsupella sect. Homocraspis (Lindb. ex Schiffn.) Grolle. Two species in the genus Lophozia and one in the genus Frullania are newly synonymized. A neotype for Jungermannia ventricosa Dicks. (Lophozia ventricosa (Dicks.) Dumort.) is designated. The five extant genera Metacalypogeia (S.Hatt.) Inoue, Nipponolejeunea S.Hatt., Notoscyphus Mitt., Spruceanthus Verd. and Trocholejeunea Schiffn. are additionally recorded in Europe as Tertiary fossils (all preserved in Baltic Amber). In the treated area, eight species of Anthocerotae (Anthocerotopsida, Hornworts) are recognized and assigned to three genera. In 373 annotations, the taxonomy, nomenclature and synonymy of many of the accepted species are discussed briefly, based primarily on recent literature sources and the authors' observations.