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

Papp, Beáta, Ódor, Péter; Erzberger, Peter: Preliminary data about the present Hungarian local populations of rare European bryophytes

Taxiphyllum densifolium (Lindb. ex Broth.) Reim, is a pontic, montane species. It lives in humid habitats, on shaded rocks. Rare species according to the RDB. New occurrence: Borsod-Abaúj-Zemplén county, Aggtelek karst, Lófej-valley at Jósvafő, on shaded calcareous rocks, ca 350 m a. s. 1., 25.05.1989, leg. Rajczy, M., det. Papp, B. Tortula brevissima Schiffn. is a continental moss growing in open desert-like habitats like gypsum soils or vertical loess cliffs. Its only known Hungarian population was discovered in 1997 (ERZBERGER 1998). It is rare according to the RDB. New occurrence: Borsod- Abauj-Zemplén county, southern limit of Bükk Mts, ca 3 km north of the village Cserépfalu, roadside composed of rhyolite tuff in southeast exposure, ca 250 m a. s. [., 06.07.1997, leg. and det. Erzberger, P. It forms a patch of ca 200 cm

2

. It occurs together with Bryum argenteum Hedw. and a Pottia species. A case study for estimating population size and IUCN status of the bryophyte Fissidens arnoldii Ruthe There is one species, Fissidens arnoldii Ruthe, of which all known localities in Hungary have been checked recently (Fig. 4). This species typically lived near Fig. 4. Hungarian distribution of Fissidens arnoldii (for symbols see Fig. 1).