L. Lőkös szerk.: Studia Botanica Hungarica 27-28. 1996-97 (Budapest, 1978)

Szerdahelyi, Tibor, Penksza, Károly, Dobolyi, Konstantin Z., Szollát, György, Kapocsi, Judit; Figeczky, Gábor: Vegetation and point-mapping survey in the strictly protected areas of the landscape protection area of the Pilis Mts (Hungary)

the range 12 in the canopy of the little fragment of Tilio-Fraxinetum stand beside the dominant Fagus sylvatica and Tilia cordata - Carpinus betulus, Tilia platyphyllos, Fraxinus excelsior, Acer pseudoplatanus, Acer campestre, Acer platanoides are typical. (Otherwise these tree species can be found scattered on the steep slopes with northern exposure where the rate of Quereus petraea is low in the Querco petraeae-Carpinetum association). Along the central line of the above mentioned ridges grass spots, and on the eastern ridge and slope, partly because of the low regeneration rate of the forest, shrub forests (Corylus avellana) and degraded fragments of Corno-Quercetum pubescenti-petraeae can be found (Quereus pubescens, Fraxinus ornus, Acer campestre, Cornus mas, Viburnum lantana, Melica uniflora, Oryzopsis virescens, Lithospermum purpureo-coeruleum etc.). On the eastern side of the eminence close to the eastern border of the range Pinus sylvestris plantation is present. In the northern edge of the range 21 on the plateau of the hill Fekete-hegy Melica uniflora-type Querco petraeae-Carpinetum stand can be found in a very narrow, dry zone which has no importance in forestry. Here the rate of Quereus petraea and Quereus cerris is larger than in the nearby stands. The select-cutting of Pinus sylvestris from the above mentioned area during forest management practice is recommended. The successive clear cuts in the ranges 12 and 20 should be carried out carefully in order to protect the rocky and shallow soil and to make sure the proper regeneration of the forest with late thinnings and only in the case of sufficient number of new shoots. It results tolerable, moderate disturbance of the habitat and also drives back the growth rate of Tilia species, while in the case of clear-felling the opposite happens, the deleterious effects become stronger. Kesztölc Range 2: The very dense and young Querco petraeae-Carpinetum stand on the top of the hill Borostás-hegy is Asperula odorata-type. In some places Melica uniflora-lype, stands occur as well. Range 6: The patch of Corno-Quercetum pubescenti-petraeae shows the characteristics of associations living on smaller rock-ridges. The habitat is very rocky and covered with little, shallow soil which can dry out easily. The low oak forest is full of trees with low growing rate (Quereus cerris, Quereus petraea, Quereus cerris x pubescens). There are a lot of Fraxinus ornus, the shrub layer is rich (Cornus mas, Crataegus monogyna, Fraxinus ornus) and the herb layer is scattered (Melica uniflora, Brachypodium pinnatum, Oryzopsis virescens, Lithospermum purpureo-coeruleum, Carex michelii, Primula veris). South of the fragment of Corno-Quercetum pubescenti-petraeae an altered Quercetum petraeaecerris forest can be found with a herb layer rich in disturbance tolerator species