Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 81. (Budapest 1989)
Bohus, G.: Agaricus studies, X. (Basidiomycetes, Agaricaceae)
ANNALES HISTORICO-NATURALES MUSEI NATIONALIS HUNGARICI Tomus81. Budapest, 1990 p. 37-44. Agaricus Studies, X. (Basidiomycetes, Agaricaceae) by G. BOHUS, Budapest G. BOHUS: Agaricus Studies, X. (Basidiomycetes, Agaricaceae). -Annls hist-nat Mus. natn. hung. 1989,81: 37-44. Abstract - A new species (A. babosi sp.n.), a new name and combination (/1. arvensis var. subarvensis), two new combinations (A. arvensis ssp. macrolepis, A. macrosporus var. exceüens), further data on two rare species (A. cappellii, A. xantholepis) and a supplementary description of A. cupreobrunneus are presented. With 4 figures. Agaricus babosi sp.n. (Fig.1) It was necessary to separated, babosi as a new species, because it differs mainly in three features from the most resembling member of the Langd -group: A. langei (MOELL.) MOELL, A. langei is not of slender stature, the width of the cap and the length of the stem are about the same. A. babosi sp.n., howewer, is of slender stature: the stem is longer than the width of the cap, can be twice as long as the cap diameter. The stem of A. babosi sp.n. is under the ring strikingly and rather darkly fibrinöse, squamose, also in zones up to the base. The stem of babosi sp.n. is relatively slender, in the gathering of Bükk mountain the characteristic values are: 14-23 x 1.5-2.5 cm; in the Torna Karst (Aggtelek National Park) material 8-13 x 1-1.2 cm. However, A. langei has a relatively thicker stem as compared to the length: 7-12 x 1.5-3 cm. PlLAT (1951 a, p.71) separates a variety ofA. haemorrhoidariusss.PiL (=A. langei), with the name var. silvaticoides (nomen nudum): yy A typo differt: A silvaticae similis sed sporis sicut in typo usque 9(-10) x 4-5 um. „This variety is validly published by BON (1985, p. 28) with the name A langei var. silvaticoides (PIL.) BON. Although PlLÁT does not mention either the measurement or the shape or the surface of the stem, it might be possible that he saw this fungus. Pileus 10-13 cm in diam.; e prope sphaerico-explanatus; brunneus; fibrillososquamulis squamisque in fundo clariore obtectus, centro nudus vel adpresse fibrillosus. Lamellae 5-10 mm latae; roseae, deinde roseolo-chololatario-brunneae, demum nigrofuscae. Stipes 14-19-23 cm longus, 1.5-2.5 cm crassus; cylindricus, vel basim versus attenuatus; albus; infra annulum conspicue et obscuriore fibrillosus-squamosus, etiam in zonis; tact u intente rubescens. Annulus superus; duplex, inferne squamosus radiatim dispositus; albus. Caro * In honour of the distinguished mycologist Margit Babos, collector of the type material.
