Folia Historico-Naturalia Musei Matraensis - A Mátra Múzeum Természetrajzi Közleményei 13. (1988)
LŐKÖS, L.: Studies in the lichens of the Tarna-vidék, NE-Hungary I. The lichen flora of Nagy-kő hill, near Bükkszenterzsébet
Studies on the lichens of the Tarna-vidék, NE-Hungary I. The lichen flora of Nagy-kő hill, near Bükkszenterzsébet LÖKÖS László Budapest, Botanical Department of the Hungarian Natural History Museum ABSTRACT: As a result of a short field trip at Nagy-kő hill, near the village Bükkszenterzsébet, taken in 1984, a total of 50 lichen species are reported. Some notes on the subtrates on which they occured are also given. Toninia diffracta (MÁSSAL.) ZAHLBR. is new to Hungary. Virtually nothing is known about the lichen flora of the so-called Tarna-vidék, a hilly area (cca 300-500 m a.s.l.) between and N of the Mátra and Bükk Mountains, surrounding the stream Tarna. Numerous plant species (higher plants, bryophytes and even a clubmoss species) of floristic interest have been reported (SUBA 1969, BAKALÁR et al. 1975, VÖRÖSS 1985, BENEDEK & ZAY 1987), although the study of its flora is not completed at all. The occurence of a special kind of sandstone makes the Tarna-vidék more interesting for the lichenologists. It has a double chemical character as substrate, since the Si-containing quartz particles are cemented by a Ca-containing matrix, consequently it is slightly calcareous in the beginning and siliceous after weathering or leaching. It seems to be supported by the presence of the saxicolous species, which usually occur on both calcareous and siliceous substrates, e. g. Aspicilia hoffinannii , Caloplaca lactea , Caloplaca velana , Lecanora muralis etc . The Nagy-kő hill, the place where the lichens were collected on 23rd September, 19B4, is located cca 2.5 km NNW of the village Bükkszenterzsébet. The south face of the hill is a large sandstone rock where three habitats were distinguished: 1. the very steep lower part of the rock (17 lichen species were found), 2. the gentle slope upper part of the rock where sandy soil is formed, covered by Festuca pallens (KOVÁCS & MÁTHÉ 1964) (18 lichen species were found), 3. the top of the rock scattered with oak trees (20 lichen species were found). Unfortunately, the frequent occurence of the epiphytic Lecanora conizaeoides and Scoliciosporum chlorococcum , the common, toxitolerant struggle zone liches in Budapest (FARKAS et al. 1985) indicates the presence of air pollution in this area. It is planned to make a further, more complate field work to find species overlooked during the first field trip, e.g. lichens of pyrenocarpous ascomata . LIST OF THE SPECIES Arthonia exilis (FLK.) ANZI - on tiny, dacaying twigs found on the ground among mosses A spicilia hoffmannii (ACH.) FLAGEY - on sandstone Aspicilia radiosa (HQFFM.) P0ELT _ LEUCKERT - on sandstone Bacidia bagliettoana (MÁSSAL. & DN0T.) 3 AT TA - on dead mosses Bacidia herharum (STIZ.) ARN. - on dead mosses Buellia punctata (H0FFM.) MASSAL. - on bark of Quercus sp. Buellia venusta (K0ERB.) LETT. - on sandstone Caloplaca lactea (MASSAL.) ZAHLBR. - on sandstone Caloplaca velana (MASSAL.) DU RIETZ - on sandstone Canrielariella surella (H0FFM.) ZAHLBR. - nn sandstone Candelariella vitellina (H0FFM.) MÜLL . ARG. - on sandstone Candelariella xanthostigma (ACH.) LETT. - on bark of Quercus sp. Cladonia coniocraea (FLK.) SPRENG. - on bark of Quercus sp. at the base of the trunk Cladonia fimbriata (L.) FR. - on sandy soil Cladonia pyxidata (L.) H0FFM. - on sandy soil Cladonia rangiformis HOFFM. - on sandy soil (it gives PD+ orange-red reaction near the youngest, apical branchlets) Cladonia subulata (L.) WEB. - on sandy soil Collema crispum (HU0S.) WEB. - on sandy soil
