B. Papp szerk.: Studia Botanica Hungarica 33. 2002 (Budapest, 2002)

Erzberger, Peter: Minor contribution to the bryoflora of the Cserhát Mts (Hungary)

Three species seem to be new to the Cserhát Mts according to the standard works of Hungarian bryology (BOROS 1968, ORBÁN and VAJDA 1983). Bryum alpinum, growing on soil in open siliceous grassland at the western slope of Bézma hill, has not been reported from Cserhát Mts before; it occurs, however, in the neighbouring Börzsöny Mts and Mátra Mts (BOROS 1968). Tortula latifolia had been found only at the base of trees or on thatched roofs in the inundation area of the rivers of Danube and Tisza. The occurrence on top of a stone in Zsúnyi-patak is the first record from a hilly district in Hungary. Perhaps it has been overlooked in this type of habitat, or it has been extending its range within the last decades. It seems likely that it can be found also along other creeks in andesitic hills. The distribution of Fissidens arnoldii in Hungary has been recorded in great detail by BOROS (1951,1968). Although Boros considers this plant to be a characteristic species of springs and small flushes in calcareous districts, he found it only in the vicinity of water mills. All known sites of occurrence of Fissidens arnoldii have recently been checked, but apart from a newly discovered locality the plant could be refound in two places only (PAPP et al. 2000, with distribution map). Therefore, Fissidens arnoldii, a rare species in Europe (ECCB 1995), is now considered to be endangered in Hungary (PAPP et al. 2000). The record from Cserhátszentiván, on a flat stone in the creek Cserkúti-patak, together with Amblystegium tenax (teste B. Papp and M. Ahrens), extends the area of Fissidens arnoldii to the east of the river Danube. Another new record from the Cserhát Mts concerns the moss Hedwigia stellata, a species described only recently (HEDENÄS 1994). The occurrence of this plant in Hungary has been demonstrated in a study of herbarium specimens (ERZBERGER 1996), and the three known localities (Sukoró in the Velence Mts, Berceli-hegy in the Cserhát Mts, and Gyöngyössolymos in the Mátra Mts) have been checked recently by the author. Hedwigia stellata could be refound only in the Mátra Mts, but a new locality has been detected in Cserhát Mts in 2000: Hungary, Nógrád county, Szanda hill south of the village Szanda, on andesitic boulder facing south near the path leading to the castle ruin (leg: P. Erzberger, 23 April 2000). * * * Acknowledgements - Many thanks to Zsuzsa Hayek and Heinz Eisterer for their hospitality and guidance in the field, and for drawing attention to some of the sites visited, and to Beáta Papp, Budapest, and Matthias Ahrens, Ettlingen, Germany, for examining the specimen of Fissidens arnoldii.