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)

Ranges 3 and 4: On the southern part of the ranges, on the gentle slopes of the steep southwest side of the hill Borostás-hegy the shrub layer of the CornoQuercetum pubescenti-petraeae is dense (Cornus mas, Crataegus monogyna, Ligustrum vulgare, etc.), the herb layer is scattered, exclusively with Oryzopsis virescens, Lithospermum purpureo-coeruleum and only a small amount of Melica uniflora. At some sites the stand is more similar to Quercetum petraeae-cerris in the respect of growth of trees and the species composition of the tree layer, but at these sites Fraxinus ornus, Quereus cerris x pubescens grow to the size of a tree and the typical species of Quercetum petraeae-cerris are missing from the herb layer. Kétágú-hegy Ranges 34 and 35: In the plateau of the hill a Melica uniflora-type Quercetum petraeae-cerris stand extends with dense shrub layer. South to this association Orno-Quercetum pubescenti-cerris is present, on the steep slopes it turns into a complex of Cotino-Quercetum pubescentis and rocky grasslands (range 1 of Kesztölc). On the northern slopes and on the hillsides of the valley Melica uniflora-type Querco petraeae-Carpinetum is found. Kis-hegy Range 36: On the plateau of the hill Kis-hegy an Asperula odorata-type Quercetum petraeae-cerris association stretches, but some elements of the herb layer (e.g. Asarum europaeum, Puimonaria officinalis) show the former presence of Querco petraeae-Carpinetum on this territory. On the southwestern side OrnoQuercetum pubescenti-cerris can be found with some patches of dry steppe, where elements typical of rocky grasslands are also abundantly present (Sempevivum hirtum, Sedum species). These steppe stands has significant botanical importance not only because of the large number of protected species (Amygdalus nana, Sempervivum hirtum, Adonis vernalis, iris variegata, Iris graminea, Dictamnus albus and Stipapulcherrima), but also by their high diversity. This OrnoQuercetum pubescenti-cerris stand requires considerate management, because of the fragile balance of its coenological structure. At the lower part of the hill and in the valley a Melica uniflora-type Querco petraeae-Carpinetum association extends. Range 37: In the surroundings of the cliff Fehér-szirt situated in part C Tilio-Fraxinetum can be found. On the top of the ledge a smaller rocky grassland patch is present. In part A and B mainly an Asperula odorata-type, in part D and E a Melica uniflora-type Querco petraeae-Carpinetum stand and Melitti-Fagetum can be found. Under the ledge the area is colonized by weeds. Range 38: In this range Asperula odorata and Melica uniflora-type Querco petraeae-Carpinetum stands and Melitti-Fagetum stands are present. The two