L. Hably szerk.: Studia Botanica Hungarica 21. 1989 (Budapest, 1989)

Mészáros, Sándor: Comparison and relations of the Hungarian and the Mongolian flora

(13 species), Apart from the above mentioned taxa, the genera of Carex (81 species), Salix (40 species), Pedicularis (33 species) and Allium (31 species) are represented in great specific diversity; the genera Carex and Allium are also very rich in Hungary as well. It is already apparent from the comparison of the genera which are most abundant in species, and even more prominent after a detailed study that the genera of Central Asian origin tend to be more abundant in species in Mongolia, while those of a Mediterranean distribution centre are more rich in species in Hungary. This tendency is reflected on Table 2. where the genera of fairly clear origin (evolutional centre, gene centre) were presented (Table 2.). The number of species which are equally found in Mongolia and Hungary are 388*, comprising 17.3% of the Mongolian plant species (enumerated in the Appendix). The taxonomical distribution of the common species is fairly even within the different families. Only four of the 16 more important families can be mentioned as exceptions: 52% of the Mongolian species of the family of Orchidaceae, 39% of the Polypodiaceae can be found in Hungary as well, but only 7.3% of Leguminosae. From another aspect; 39% of the species of the family of Chenopodiaceae found in Hungary can be spotted in Mongolia as well. Even more characteristic, we can observe a high ratio of common species within certain genera; in the extremes, we can meet 100% agreement as well - e.g., in ancient genera like Lycopodium, dissected lately into several genera. The most characteristic genera, from this point of view, are listed below. THE SPECIES IN COMMON Number of common species In percentage of Mongolian species In percentage of Hungarian species Rumex Potamogeton Polygonum Chenopodium Juncus Poa Bromus Calamagrostis Orchis 9 9 8 9 6 5 4 3 3 69.2 64.3 33.3 56.2 42.8 21.7 57.1 23.1 75.0 50.0 60.0 61.5 50.0 37.5 50.0 30.8 50.0 20.0 * native and subspontaneous species, together with recently extincted species