Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 81. (Budapest 1989)

Bohus, G.: Agaricus studies, X. (Basidiomycetes, Agaricaceae)

in pileo 1-1.2 cm crassa, in stipite tuberculata; fracta cito sanguineorubra. Sporae ellipsoideae, 7-9 x 4-5(Um. Cystidia marginalia ovato-piriformia, 20-35 x 13-20 jim. Ty p u s : 84367 in Herbario Musei Historico-naturalis Hungarici, Budapest. Mts. Bükk: Méneslápa prope Hollóstető, in piceeto, 23 Oct. 1984, leg. M. BABOS. Pileus 10-13 cm, nearly globate initially, then expanded; brown; on the disc smooth or innate fibrinöse, outwards covered with fine or wider fibrillosquames on lighter ground. Gills 5-10 m333m; rosy, edge whitish, later rosaceous chocolate brown, finally blackish brown. Stem 14-19-23 x 1.5-2.5 cm, cylindrical or attenuated towards base; white, silky; below the ring conspicuously and darker fibrillose-squamose, also in zones; intensively reddening when touched. Ring double; on the underside towards the margin formed as cog-wheel; white. Flesh in cap 1-1.2 cm thick, in stem pithy; when cut quickly turning bloodred. Spores ellipsoid, 7-9 x 4-5 urn. Cheilocystidia balloonshaped, 20-35 x 13-20 urn. In planted wood of Picea excelsa. Further herbarial data: Torna Karst (Aggtelek National Park): Szelcepuszta, in Picea wood, 14 Sept. 1988, leg. G. VASAS, Cs. LOCSMÁNDI & A BATHÓ. Variability: Exemplars collected in other mountains (Torna Karst: Szelcepuszta, 14 Sept. 1988) show the following differences: the stem is shorter and thinner: 8-13 x 1-1.2 cm, it may be slightly bulbous and the cap is smaller: 6-9 cm. Agaricus arvensis SCHFF.: FR. var. subarvensis nom. et comb. n. (Fig. 2) Basionyme: A. cretaceus FR. ss. PIL., 1951, Acta Musei Nat. Prague VII B, 1: 80-81. (Nomen incertum). The epithet cannot be used in Agaricus in so far as the plate of A cretaceus Fr. executed by PETTERSON under directions of FRIES himself depicts a species of Leucoagaricus pudicus- group. Somewhat later PlLÁT himself (1951 a) mentions A cretaceus as: „Haec species vel varietas". The characteristics of the variety: the gills remain whitish, pale for a long time and the cap scarcely turns yellow and when it does, only slightly, stem with a small bulb or truncate at the base. Description of the gathering - Torna Karst (Aggtelek National Park): between Égerszög and Vörös-tó, in calluneto, 20 Oct. 1988. leg. E. DALNOKI -: Pileus 6-8 cm; white, not yellowing when touched, later only here and there pale brown (as at A. arvensis ); very finely fibrillose-squamulose (under lens). Gills long whitish-greyish, later pale, then slowly darkening. Stem 6-7 x 0.8-1.2 (1.5) cm, cylindrical with slightly bulbous or truncate base; white; finely fibrillose-squamulose as the pileus. Ring as at A. arvensis, double layered, the underside splitting into a cog-wheel. Spores ellipsoid, 6.5-8 x 4-5 urn.