B. Papp szerk.: Studia Botanica Hungarica 39. 2008 (Budapest, 2008)

Erzberger, P.; Schröder, W.: The genus Schistidium (Grimmiaceae, Musci) in Hungary

new locations, and maybe even new taxa. It would also be necessary to re-visit the sites of old records and check if the species are still there. Some future field research should also aim at population dynamics, not only of rare or less frequent species, but also of species of intermediate frequency viz. S. elegantulum and S. belveticum, because we do not yet understand, why they are not much more widespread, given the many additional potential growth sites in the calcareous parts of Hungary. Thus S. elegantulum has most of its records in the Bükk Mts, but strikingly few in the other limestone and dolomite areas, none at all in the Pilis Mts. Does this reflect a preference for limestone vs. dolomite, or are there climatic reasons, or is it just an artefact of insufficient mapping? Similarly, it is not clear, why S. belveticum has not (yet?) been found in the Bakony Mts or the Balaton Uplands. Many of the Scbistidium growth sites mapped during this revision lie already in protected areas like the Bükk National park, the Aggtelek National Park and the Duna-Ipoly National Park. However, since this protected status does not prevent the sometimes negative consequences to habitat quality of forestry management, it is important to make the localities of important populations known to the authorities concerned. In this context, we would like to draw attention to the sites of S. flaccidum (Bükk Mts, Visegrád Mts) and the two only sites of S. confertum (Mátra and Börzöny Mts). The status of S. confertum is uncertain. A short search at the surroundings of Holló-kő (Börzsöny Mts) by the first author was unsuccessful; no search has been made at Disznó-kő (Mátra Mts) for this species. It is hoped that this survey of Scbistidium in Hungary, where this genus is well represented, has outlined some of its interesting taxonomic, floristical and ecological features, and that it will help and stimulate future research. Acknowledgements - The authors are grateful to Dr H. H. Blom for examining a critical specimen, to the curators and directors of the public herbaria and the owners of private herbaria mentioned in the Introduction for the loan of specimens, to Dr L. Lőkös for the preparation of maps, to PD Dr H. Kürschner for the opportunity to use a Leitz drawing apparatus, to R. McF. Craig for correcting the English and to Mag. H. Köckinger for helpful comments. Special thanks are due to Prof. emer. Dr T. Pöcs for his genuine interest in this work and his active participation in the search for interesting potential growth sites of Scbistidium in the Bükk Mts.