B. Papp szerk.: Studia Botanica Hungarica 30-31. 1999-2000 (Budapest, 2000)

Szurdoki, Erzsébet, Tóth, Zoltán; Pelles, Gábor: The Sphagnum populations of the Zemplén Mts, NE Hungary

The following works, collections and other sources have been consulted during this study: publications of VAJDA (1969), BOROS (1964, 1968), SIMON (1971, 1977a, b), floristical notes of BOROS (1947, 1948, 1949) and VAJDA (1948, 1951, 1953, 1956, 1957) (preserved at BP) and the bryological collections at BP and the Bryophyte Collection of EKTF Botanical Department (EGR). The collecting diaries, especially a hand drawn map of Vajda (that was found among his floristical notes), provided an important role in the localisation of Sphagnum occurrences. Some new peatmoss populations, to be described in the present study, were found and partly reported by other botanist colleagues. The revision of the Sphagnum specimens from the Zemplén Mts were confined to the collections at BP and EGR - since these institutes are holding most material available regarding this group. During the fieldwork between 1997 and 1999, the occurrences were located as exactly as possible, they were marked on maps (scale 1 : 10,000), their size was estimated and both Sphagna and the associating bryophytes were collected. Also forestry maps (scale 1 : 25,000) were used to identify locations and record local names of forest compartments (containing the town name combined with numbers of the specific compartment and subcompartment). These collections will also be part of the herbaria at BP and at the Bryophyte Herbarium of Z. Tóth. Since the field trips were mostly conducted in early spring and autumn, lists of vascular plants were not assembled. The occurrences were grouped on the basis of habitat conditions and by Sphagnum species. RESULTS Nine Sphagnum locations were described from the mountains earlier, of which 6 occurrence still exist, and 10 new occurrences were identified recently (see Tables 1-3). Earlier, 5 species of peatmoss were collected from this area but recent studies have proven the presence of 14 species (10 are new for the Zemplén Mts, see Tables 1-3). Four groups of habitats were established according to decreasing moisture: peat accumulating fens, Sphagnum occurrences along springs, streams and in other wet habitat, Sphagnum occurrences on moist roadside embankments and in temporarily wet places with occasional runoff, and Sphagnum occurrences in forests. All 19 occurrences known to date have been marked on the map (Fig. 1).