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Kitaibelia vol. 6 – no. 1. (2001) p.157-165.
Felhagyott homokbányák florisztikai vizsgálata II.
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Rare species occuring in abandoned sand-pits are listed in this paper. In the shallow sand-pits there are only dry sandy soil, so the species of it came from the surrounding sandy grasslands, but they are important to the preservation of species like Festuca vaginata, Corispermum nitidum, Polygonum arenarium etc. The deeper sand-pits, with wet parts are quite different from the original vegetation. In the moist parts of some sand-pits appears an interesting assotiation, similar to the Pseudolysimachio spicatae ñ Salicetum rosmarinifoliae, which is an endangered assotiation in Hungary. Another strange association dominated by shrubby willows (Salix purpurea and S. cinerea) restricted along the brooks in large sand-pits near Esztergom and Tatab·nya. Further rare species characteristic of meadows or forests are shown. Some of theese had been unknown in the natural vegetation of certain areas, e. g. Dactylorhyza majalis occur in the Gerecse mts only in a sand-pit, Sphagnum fimbriatum in the Pilis mts or Orchis tridentata in the flood-basin of River Dr·va be found only in an other sand-pit.