Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 65. (Budapest 1973)
Bohus, G.: Soil acidity and the occurrence of fungi in deciduous forests
Table 10. Acidophilous species I. — Regulation of fruitbodies — (Abbreviations see on pages 75, 78) Species Locality of collecting Alteration in pH value of unbuffered solutions about 6 pH Amanita muscaria M .Nagy lápaf ő 6.2 5.2 Amanita muscaria Murarátka 6.2 5.0 Boletus aereus V.Lomhegy 6.1 4.4 Boletus edulis V.Apátkutivalley 6.0 4.8 Boletus edulis V.Lomhegy 6.0 4.5 Boletus edulis B.Tökhegy 6.2 5.0 Boletus pinicola M.Nagylápafő 6.2 5.0 Dermocybe phoenicea B.Tökhegy 6.2 4.8 Leccinum aurantiacum v. quercinum B.Tökhegy 6.2 4.1 Ramaria botrytis quercinum V.Lomhegy 6.1 5.1 Ramaria flava M.Nagylápafő 6.2 4.7 Ramaria f ormosa V.Apátkutivalley 6.0 4.7 Ramaria f ormosa V.Apátkutivalley 6.0 4.5 Rozites caperata M.Nagylápafő 6.2 5.2 Rozites caperata M.Nagylápafő 6.2 5.3 Russula emetica Murarátka 6.2 5.2 Russula emetica M. Nagylápafő 6.2 5.1 Xerocomus chrysenteron v . acidophilus Murarátka 6.2 4.6 aggregates primarily in subacidophilous forests). Por some species assignable to this group (e.g. Gantharellus cibarius f. neglectus, or Rhodophyllus rhodopolius, at present stiU assigned to the mesophilous species), further observations are needed, hence this grade cannot as yet be established. R&: (Species preferring slightly acidic to alkaline soils). Species indicated by us as mesophilous (Table 14) belong to this group on the basis of characterization. Their occurrence is between 5.0-7.5 pH. R5: (Species occuring mainly on alkaline to neutral subtrates). Only a few socalled basophilous fungus species, relegable to this group, are known at present (Table 15) ; a part of them regulates solutions with pH 4 - 5 to above pH 6. R§: (Species indifferent to soil reactions.) The number of species constituting this group decreased since the pubhcation BOHTJS & BABOS 1967 of our list (Table 16), because it was found with respect to some that they do not occur in the alkaline pH interval and were thus transferred to grade R2. 4. ODTJM'S (1971) statement, among others, that "species with wide geographical ranges almost always develop locally adapted populations called ecotypes that have optima and hmits of tolerance adjusted to local conditions" may partly be referred to certain fungus species occurring in a wide pH interval. As is known, some ecotypes, preferring certain soil acidities, may develop with or without morphological manifestations. Examples relegable here are: ROMAGNESI separated from the mesophilous Russula delica the var. trachyspora Which fructifies regularly in deciduous forests on strongly alkaline soils in Hungary. BOHUS separated from the mesophilous Xerocomus chrysenteron the var. acidophilus, with a darker pileus and also more vividly coloured and hitherto observed only in strongly acidophilous forests, etc.
