B. Papp szerk.: Studia Botanica Hungarica 33. 2002 (Budapest, 2002)

Vasas, Gizella: Interesting macrofungi in Hungary, IV. Three rare Russula species (Basidiomycetes, Russulales)

sometimes also olivaceous green-brown. The surface of the cap of both species is shiny, and somewhat slimy when damp. No real difference in the colour of gills of the entirely developed fungi: it is pale cream for both. However, the gills of R. viscida are never pure white when young, and they have brownish yellow patches later. The stem of R. viscida usually widens towards the base, stout, and flecked with yellowish brown with age or if pressed. The stem of R. atropurpurea is very rarely widens towards the base, becoming slightly greyish with age, and sometimes ochre or rust-coloured patches might appear mostly at the base. Macroscopically the two species can be distinguished on the basis of the colour changing of the flesh: R. viscida turns to be yellowish brown, brown when cut or with age, while R. atropurpurea turns to slightly greyish with age. The microscopic characters of the spores are also very similar at the two species: granularity, the pattern of the network seems to be the same. Spores of R. viscida are somewhat larger (7.5-11 X 7-9.5 urn) than those of R. atropurpurea (6.5-9 x 6-7.5 urn). Cap: 8-14 cm in diam. At first spherical, convex, later expanded and finally depressed at the centre. The skin and the flesh are in a firm connection and so it is difficult to peal it off. The surface is shiny, glistening when dry, sticky when damp. Its colour is variable, lilac-wine-red, blackish red or purple-olive, darker in the centre, often flecked with ochre. Gills: brittle, crowded, rounded at the stem. At first whitish, pale cream, later flecked with brown. Stem: 2-3 cm wide, stout, widened towards the base, clavate or bulbous, covered by a rust-coloured granulöse pattern which more dense towards the base. Flecked with rust-colour in older specimens. Flesh: firm, solid, turns yellow-brown when cut or with age. Scented like fruit or honey. Its taste is mild in the cap, but hot in the gills and the stem. Spores: wide elliptic, 7.5-11 x 7-9.5 urn, ornamented by large confluent warts. Spore powder pale cream. Herbarium specimens (BP): Buda Mts: Normafa, in Fageto. Leg., det.: L. Albert, 28.08.1987. Aggtelek karst: Varbóc, Szén-völgy-tető, in Querceto. Leg., det.: Cs. Locsmándi and G. Vasas, 10.09.1988. - Visegrád Mts: Tahi, in Fageto. Leg: L. Albert, G. Bohus, Cs. Locsmándi and G. Vasas, 30.09.1994, det.: G. Vasas. - Mátra Mts: Mátraháza, in Fageto. Leg., det.: Cs. Locsmándi and G. Vasas, 01. 08. 2001. Russula paludosa Britzelmayr 1891 This species favours definitely acidic soils. It usually grows in damp, mossy spruce and fir forests (with Vaccinium) and in peaty coniferous forests (with Sphagnum), rarely it occurs in beech woods (with Luzula). Fresh, damp, peaty soils of poor in nutrients, and podsolizated brown forest soils (KRIEGLSTEINER 2001). According to ElNHELLINGER (1985) it can be twice frequent on soils with