Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 70. (Budapest 1978)

Bohus, G.: Hebeloma studies, II. (Basidiomycetes, Cortinariaceae)

ANNALES HISTORICO-NATURALES MUSEI NATIONALIS HUNGARICI Tomus 70. Budapest 1978. Hebeloma Studies, II. (Basidiomycetes, Cortinariaceae) by G. BOHUS, Budapest Abstract — Description of two new taxa: Hebeloma ammophilum sp. n. and H. psammocolum sp. n., furthermore, floristical-taxonomical data of four known species. With 4 figures. Further examination of Hebeloma versipelle On the basis of the H. versipelle (FR.) GILL. SS. KONRAD & MAUBLANC materials collected on several occasions, it seemed that the problem of Hebeloma versipelle needed further investigation, in spite of the previous discussion (BOHUS 1972). It could be inferred that H. versipelle with small spores which had been described by ROMAGNESI (1965) is not identical with the one described by FRIES (1836-1838*, 1874), since there are contradictions when the two diagnoses are compared with each other. For example, according to ROMAGNESI the pileus is "épais et charnu", while the fungus of FRIES is with a thin flesh — "pileus tenuis" — and a further indication of a fungus with thicker flesh is that ROMAGNESI brings the species in relation with the thicker-fleshed H. fastibile of KONRAD & MAUBLANC (1924-1930, tab. 77). Or, for example, the stipe in the ROMAGNESItype H. versipelle is "marquée en haut de floccons blancs plus ou moins persistans", while in FRIES following can be read: "apice.

.. pruinoso". In studying our H. versipelle material, no contradiction emerged in comparison with FRIES'S diagnosis. It would be better if Prof. ROMAGNESI gave a new name to his fungus. The real H. versipelle (FR.) GILL SS. KONR. & MAUBL. species with large spores are represented by KONRAD & MAUBLANC (1924-1930, tab. 78.) and COOKE (1884-1886, tab. 451/410. sub nomine H. claviceps). Further publications using the H. versipelle designation in relation with other species are as follows: 1. RICKEN (1910-1915): p. 118, tab. 33/3. There are authors who consider the quoted description and plate related to H. sarcophyllum. Apparently, the place and time of growth are in contradiction with this: "An grasigen Orten, an Wegen, fast rasig, voreilend", but this is taken from the description of A. versipellis by FRIES ("Locis graminosis, ad vias, praecox, subcaesp."). — 2. BRESADOLA (1930): tab. 711. The spores are of different form: "ovato-fusoideae, amygdaliformes", even are drawn as sublimoniform. Cheilocystidia are also different: "apice capitatae", whereas in H. versipelle, according to the characterization by KONRAD & MAUBLANC: "cylindriques, ventrues en bas", and again according to our description: "below mostly ventricose". — 3. The species in BON & CHEVASSUT (1974): p. 3-4, can be taken as H. testaceum (BATSCH ex FR.) QUEL. SS. BRUCHET. This is supported by the following statements of the description: "Spores subamygdaliformes ... odeur agréable, cacaotée ... saveur amarescente." The same characteristics in H. versipelle: spo* FRIES, E. ( 1836-1838): Epicrisis systematis mycologici (p. 179.): A. versipellis, pileo carnoso, convexo piano, glutine tenaci viscoso, discoideo, versus ambitum adglutinato-sericeo, dein glabro, stipite fistuloso, tenaci albosericeo, apiceque pruinoso, lamellis rotundatis, confertis, latis (3-5 lin.!), ex albo-carneo argillaceis. A. lubricus Aman. A. thelephor. Secr. n. 576. Clus. pern. g. XII. sp. Í. ! Sterb. t. 20. B. Locis graminosis, ad vias, praecox, subcaesp. Ex aetate et jove mire mutatur. Serico e velo fibrilloso evanido stipes fibrilloso-striatus, intus fuscescens. Pileus tenuis, subpunctatus, reguláris, crustullinus demum répandus, siccus alutaceus, opacus. Odor debilis, non ingratus. Ann. Hist.-nat. Mus. Nat. Hung., 70, 1978. 7*