B. Papp szerk.: Studia Botanica Hungarica 37. 2006 (Budapest, 2006)

Bauer, Norbert: Open sandy grasslands of the Bakony region

Table 3 (continued) 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Hypericum perforatum - - + + + Trifolium arvense + ------ + ---- - + ----Draba nemorosa - + ---------- - - - + - - Erysimum diffusum --------- + -- + - ----Veronica prostrata ______ _____ + _ _ _ _ _ - - 1 + Other taxa: 21: Arrhenatherum elatius 1, Robinia pseudoacacia (juv.) +, Achillea collina +, Carex micheli +, Hieracium echioides +, Linaria genistij'oiia +, Quercus cerris Quv.) +; 22: Pseudolysimachion spicatum +, Allium scorodoprasum +, Galium verum +; 23: Senecio jacobea +; 24: Pinns sylvestris (juv.) 1, Erigeron animus +, Viola hirta +, Calamagrostis epigeios 1 ; 25: Allium flavum +; 26: Senecio jacobea +; 27: Hieracium pilosella agg. +; 28: Achillea collina +, Taraxacum erythrospermum +; 32: Omithogalum umbellatum +, Poa angustifolia +, Cynodon dactylon +, Vicia angustifolia +; 33: Poa angustifolia 1, Minuartia verna +, Sedum hillebrandtii +; 34: Pseudolysimachion spicatum 1; 35: Saxifraga bulbifera +, Valerianella locusta +, Hieracium bauhini +, Hieracium pilosella agg. 1, Clinopodium vulgare +, Carex micheli +; 36: Asparagus officinalis 1, Centaurea micranthos +, Calamagrostis epigeios +, Dactylis glomerata +, Melica transsilvannica +; 37: Minuartia verna +, Arabidopsis thaliana +; 38: Festucapseudovina 1, Luzula campestris +; 39: Orchis morio +, Hieracium bauhini 1, Cruciata pedemontana +, Muscari comosum +, Luzula campestris +, Crataegus monogyna (juv.) +, Seseli annuum 1; 40: Chrysopogon gryllus 1, Saxifraga bulbifera +, Cruciata pedemontana +, Myosotis arvensis +, Arabis glabra +, Seseli annuum + 2) on the basis of the standardised PCoA of cover value. The PCA ordination based on presence-absence matrix (Fig. 3) showed that the isolation of the FvS group cannot be verified, because of the lack of major differences of species composition. The subassociation level of separation - Festucetum vaginatae stipetosum pennatae - is reasonable for the Stipa pennata grasslands of the Bakonyalja, which is parallel to the subassociation type of maintenance of grasslands dominated by Stipa borysthenica Klokov in the stands on the area of the Danube-Tisza Interfluve (see BORHIDI 2003). During our samplings in the area of "Fenyőfői Osfenyves", Corynephorus canescens seemed to be a rarer element as opposed to the earlier samplings (BORHIDI 1956, MAJER 1988). The stands matching the description of Festuco-Corynephoretum (see BORHIDI 1956, 1958, 1996) can be found mainly on the recently disturbed patches, in glades, on road slopes of regenerating vegetation adjoining forests, and on sandy surfaces formed by bauxite pit recultivation. The actual patch-like occurrences of Corynephorus and the appearance partly as a co-grassland establisher with Festuca vaginata seems secondary in the region of Fenyőfő (BORHIDI (2003) also mentions that it can appear secondarily). The frequent occurrence of Calamagrostis epigeios (L.) Roth, Euphorbia cyparissias L., Ambrosia artemisiifolia L. also refers to this fact. This vegetation type is not typical - and