L. Hably szerk.: Studia Botanica Hungarica 19. 1986 (Budapest, 1986)
Szerdahelyi, Tibor: Rare ferns of Hungary IV. Woodsia ilvensis in the Bükk National Park
Hemikrypto Phyton Cham.ephyton Geophyton Mikropliyton Nanophanerophyton Therophyton Hemitherophyton Megaphanerophylon Asplenio-Festucion Featuco - Brometea Festucetalla valesiacae Querco-Fagea Indifferent species Quercetea Festucion vaginatae Aceri-Quercion Pino-Ouercetea, etc. (altogether 88.5 %). The indifferent species were present in low abundance. According to cenological character grassy elements predominate. We can see in Fig. 2 that the R 0 value is high, indicating that several species have no special soil requirements. The majority of the species are indifferent to the type of soil. The T value is lower than that of R 0 , but it is nevertheless rather high. The sizes of the T3 and T^ elements show the groups of the xerothermic species. The F 0 value is very low, indicating that most of the species have definite water requirements. The F Q value is connected with only one species: Luzula campestris . The Fj and F2 values show the groups of the xerophilous species. Similarly to F , the N 0 value is very low. The distribution of the N values is almost • the same as that of the F values. There are some indifferent species, but the number of nitrophilous species is low. Despite the silicate basement rock the acidiphilous species do not dominate over the basiphilous species. The explanation for this lies in the basic content of the gabbro, the large quantity of Ca ++ and Mg ++ . Besides the moss and lichen synusia, the most important pioneer species in the Fig. 1. Distribution of life-forms, cenological characters and phytogeographical spectrum Méditer renean and tubmedit. Eurasian Pannonian Circumpolar Central European Carpathian South and South-East European Pontian Balkan European Cosmopolitan Sarmatian Eaat-Alplna Euro-Iberian, atlantlc, continental, etc.
