B. Papp szerk.: Studia Botanica Hungarica 32. 2001 (Budapest, 2001)

Dobolyi, Konstantin: Phytosociological and ecological evaluation of selected habitats of Telekia speciosa (Schreb.) Baumg. (Asteraceae)

characters, respectively (Figs 5-6). This method is also particularly useful at separating groups for statistical analyses. The blocks differenciate those few variables, which characterize the groups of relevés. Block clustering of "matrix A" shows that 141 accident plant species occur in the relevés (60%). This extremely high proportion causes difficulties at habitat evaluation based on the floral composition. In the block diagram of the "matrix B" it is remarkable that the Indifferent group is a determining factor in all relevé blocks (Fig. 6). Results of statistical analyses Four groups of relevés have been separated on the basis of a consensus among the results of classifications, ordinations and block clustering methods. These groups represent the different vegetation types where Telekia speciosa occurs, but the relevés (representing the habitats) do not create clearly discrete groups that could be identified with well defined plant communities. Most relevés or their groups represent mixed or disturbed vegetation types. Group I Relevés: 1, 9, 54, 56, 61, 67, 69, 70. Highest proportion of Balkan floral elements (Table 3) and FilipenduloPetasition species, high proportion of indifferent species (Table 4), many Hydatohelophyta, few trees (Table 2) and many halflight plants (Table 10) are significant. Table 2. Distribution of life forms (ranking according to HORVÁTH et al. (1995)) (expressed in percentage). Groups of relevés Life form I II III IV Total Mega-mesophancrophyta 5.3 11.9 24.2 19.0 14.4 Microphanerophyta 4.1 2.7 1.6 2.6 2.5 Nanophanerophyta 2,1 L.8 1.6 0.5 1.2 Chamaephyta 0.4 0.7 0.9 0.5 Gcophyta 12.6 7.5 12.1 13.7 1 1.5 Hydato-helophyta 2.9 0,1 0.5 0.7 Hemicryptophyta 70.7 71.1 54.6 59.4 63.7 Hemitherophyta 0.6 0.6 Therophyta 1.6 4.0 5.2 3.3 3.9