S. Orbán szerk.: Studia Botanica Hungarica 11. 1976 (Budapest, 1976)
Babosné Greskovits, Margit: A magyarországi homokterületek ritka és érdekes gombafajai. II.
BABOS, M.: Rare and interesting fungus species of the Hungarian sandy areas. II. The Szentendre Island, some 30 km long in the Visegrád - Budapest reach of the Danube, proved to be very interesting mycologically. The original vegetation exists now in small spots, and the afforested areas are also small. The examined park forest near Szigetmonostor - Horány covers 308 hectares, with the following rate of participation of tree species: Robinia pseudoacacia 40,7 %, Quercus robur 14 %, Pinus silvestris 13,6 %, Pinus nigra 11,2 %, Populus alba - canescens and other poplar species 8,8 %, Quercus cerris 6, 7 %, and other tree species 5 %. The neutral or weakly basic calcareous sandy soil strongly influences the appearance of the fungi. Besides some psammophilous specie s , mainly litter and decaying wood habiting fungi appear in great numbers. The rate of soil inhabiting micorrhizal fungi is low, to be found mainly in the poplar woods. The proliferation of saprophitic fungi is greatly induced also by anthropogeneous effects. The present paper submits a discussion of further rare species. The herbarial specimens are deposited in the Botanical Department of the Hungarian Natural History Museum, Budapest. Coprinus spilosporus ROMAGN. (Fig. 1. ) Appearing regularly in every year from spring to late summer in mixed sandy woods ( Populus alba - canescens , Pinus silvestris, Quercus robur, Robinia pseudo-acacia ) on litter and also on bare sand. The initially white then ochreous-brownish cap is ornamented concentrically by spots. The velar cells are ramifying like an antler. The base of the stem is more or less bulbous; the bulb and the mycelial tuft at its base is wholly covered by sand. Coprinus micaceus (BULL, ex FR. ) FR. var, mammosus var, nova (Fig. 2.) The colour, size and microscopic characteristics agree with those of C. micaceus , but the shape differs by a characteristic, conspicuous, hump like mamilla in the middle of each cap, resembling that of var, acuminatus separated from C. atramentarius ROMAGNESI (1951). I found it on two occasions on disturbed sandy soil in a forest settlement.
