Zs. P. Komáromy szerk.: Studia Botanica Hungarica 13. 1979 (Budapest, 1979)

Bohus, Gábor: Some results of systematical and ecological research on Agaricales, VII.

STUDl A BOTANICA HUNGARICA Antea: Fragmenta Botanica p. 19-27 1979 Tom. XIII Some results of systematical and ecological research on Agaricales, VII. Gábor BOHUS ABSTRACT: Experimental investigations were carried out to study the flesh disrupting on surface of fruit bodies. Further data are given to the ammonium-nitrogen utilization of Agaricus macrosporoides

. Description of two new taxa: Lepista irinoides sp.n.

, Leucopaxillus paradoxus (COST.-DUFOUR) BOURS. f. subaerugineus f. n. Taxonomical notes on Lepista luscina (FR.) SING. var. irinoides BOH. New type specimen has been chosen for Agaricus macrosporoides BOH. Experimental investigation of the phenomenon of the flesh disrupting on the surface of fruit bodies In part of the Agaricus species growing in grasslands, sunshine and dry air are considered to cause the finely, or coarsely areolate structure, and the coarsely squamulate one of pileus, in certain cases causing even radial disruption. It is especially characteristic of certain species (

A. bernardii

, A. maskae

) that hardly any specimens with smooth pileus can be found. The experimental investigation of this phenomenon became possible because two different strains of A. macrosporoides were available for us. In one of them (No. 14/74.), disrupting ensued easily, while in the other (No. 14/3.) it only occurred rarely. Quelques résultats des recherches systématiques et oecologiques relatives aux Agaricales I-II-III-IV-V.: Bot. Közlem. 1954, 45:59-62, 231-233; 1958, 47: 273-276; 1960, 48: 232-234; 1962, 49: 246-250. Ergebnisse der auf Agaricales bezüglichen systematischen und ökologischen Forschungen VI. : Bot. Köziem. , 1970, 57: 13-22.