Zs. P. Komáromy szerk.: Studia Botanica Hungarica 14. 1980 (Budapest, 1980)

Szolláth, György: Data to the flora and vegetation of the Gerecse Mountains I.

STUDIA BOTANICA HUNGARICA (Antea: Fragmenta Botanica) XIV. 1980 p. 83-105 Data to the flora and vegetation of the Gerecse Mountains I. By Gy. SZOLLÁTH (Received February 10, 1980) Abstract: On the basis of literature, author gives a brief survey of the ordinary geographical conditions then takes the plant communities of the examined territory referring to 40 coenological samples. Stress is laid on the floristically significant species and the entire flora list is appended. Introduction The Gete group of hills is a block area of a relatively small extention on the eastern margin of the Gerecse Mts. (Map. 1). Its natural border is the Eastern Gerecse on the west, terrace of river Danube on the north, hills of Zsámbék-Bajna villages on the south and its eastern border is the Dorogi-ârok with the Pilis Mts. behind. Formerly the Gerecse itself was treated not as a separate mountain but sometimes as part of the Pilis and sometimes of the Vértes Mts. (Kerner, Hunfalvy, Hantken cf., Redl 1926) so the same situation with the Gete group today is understandable. In his paper on the Pilis and Vértes Mts., Á. Boros spoke about this uncertainty and he treated the floristical data of Gete together with the Pilis (Boros 1953 a). Further, also floristical source are the two very good papers of Feichtinger (1864, 1899); more detailed /description of this area can not be found up to the present. In the fifties the coenological examinations also had been started. Data on the Gete were published by M. Járai.Komlódi (1958) and M. Járai-KomlódiFekete (1962). The first one gives only a brief account of the vegetation of this small territory while the latter deals only with a single community. The relative independence of the Gete hills and the fact that there were few vegetation examinations and there were no mapping in this area so far, understandably require closer investigations. It was all the more necessary to do these works because botanically it is a valuable region, well worth protecting; it is badly endangered by the accumulation of secondary products (spoils-banks, slug-dumps) of coal mining for 100 years and the joining industries. Effects of growing (plant cultivation, grazing) and wrong forestry activities (formerly the acacia, nowdays the black pine plantations) also take part in transforming the face of this area. Description of the geomorphological and geological characters The Gete - which geographically belongs to the Gerecse Mts. - is a hilly country with vivid relief. The Gerecse itself is a block mountain unaffected by folding, considerably fragmented by tectonic motions (Cholnoky 1937, Láng 1955, Bulla 1926). Besides the three north-south and the 8:Í