B. Papp szerk.: Studia Botanica Hungarica 30-31. 1999-2000 (Budapest, 2000)
Vasas, Gizella: Contributions to the knowledge of macrofungi of the forests along the Fekete-Körös, SE Hungary
ti ve tree species like Robinia pseudo-acacia, Juglans nigra, Populus sp. Some of the remnants of these old, semi-natural stands proved to be excellent habitats for cryptogams. A map of the localities is given in PAPP and R.AJCZY (2000). THE MACROFUNGI OF THE STUDIED AREA No former scientific mycological research is known from the forests along the Fekete-Körös. The only five common fungus species, reported recently (RIMÓCZI 1994) from these areas, were incorporated in our paper as well. From this region, we had even no preserved specimens in the Macrofungi Collection of the Botanical Department of the Hungarian Natural History Museum (Budapest), thus our mycological investigations in 1998 were really the first steps of a gap-filling activity. Our exploration of the area has resulted in the record of altogether 90 macrofungi species, among them 54 terricolous, saprophytic, 26 xylophagous and 10 mycorrhizal species. On the basis of our investigations the Mályvád forest proved to be the richest in macrofungi species. The record of macrofungi from these riparian forests is remarkably different from those of the montane (often called "acidic") forests, where mostly mycorrhizal species are dominant (BOHUS and BABOS 1960, 1967, 1978). Among the Hungarian areas, investigated mycologically so far, the species composition of the macrofungi of our study area is quite similar to that of the Szigetköz area. Both riverine forest areas are characterised by the dominance of saprophytic species, and the subordination of mycorrhizal species. No species of Amanita or Cortinarius was found at in the Fekete-Körös area, and, similarly, no Cortinarius species and only two Amanita species were collected in the Szigetköz during our 3-year research period. Among the mycorrhizal species of the Fekete-Körös area, we recorded 7 species of the genus Russula. The Boletales order is represented by only two species. The number of saprophytic, nitrofrequent species is high in both areas (some species, present in both areas: Agaricus praeclaresquamosus, Coprinus micaceus, C. plicatilis, Leucoagaricus serenus, Melanoleuca melaleuca, Tubaria furfuracea). The abundance of the saprophytic Lepiota s. 1. species was conspicuous. The presence of Agaricus was also remarkable in our study area. So far, 10 species (A. annulospecialis, A. arvensis, A. bohusii, A. bresadolianus, A. essettei, A. lanipes, A. phaeolepidotus , A. praeclaresquamosus, A. semotus, A. squamuliferus, A. xanthoderma) were observed, but further investigation should obviously reveal more species. A. praeclaresquamosus, known to be a rare species in Hungary,
