Boros István (szerk.): A Magyar Természettudományi Múzeum évkönyve 52. (Budapest 1960)

Bohus, G. ; Babos, M.: Notes on the occurrence in Hungary of Russula species, with regard to their range in Europe

Russula lactea (Pers.) Fr. ss. Sing. We list this very rare species, known to literature from a few localities only, under the authorship of Singer, though Singer himself refers to Pers o o n and Fries. However, R. lactea, treated by Persoon and Fries, does not correspond to Singe r's species ; they are, in reality, R. lepida forms. For instance, some characteristics of F r i e s's description are indicative of this conclusion, as, e. g.: „pileus compactus" ,,stipes licet valde durus". On the oilier hand, Singe r's R. lactea is a rather fragile fungus. R. lactea was found in two localities of a Luzulo-Quercetum subcarpaticum fagetosum stock on the Mt. Samassahegy in the Mts. Bükk (2,4 July 1956, leg. Babos), besides in the Mts. Bakony : in Luzulo-Quercetum subcarpaticum fagetosum, 4. august 1960, around Farkasgyepu, leg. Bohus & Babos. The following description wholly agrees with S i n g e r's (Ann. Myc., 33, 1935, p. 318—319). Cap whitish, lightly flushed with pale yellow, pinkish to fleshy, depressed in middle also initially, viscid yet soon dry and shineless, with minute flocci and granules, visible under magnification especially in middle of cap, margin pectinately striate, 2,5—5 cm, without cuticular cystids and elements turning blue with sulphovanillin. Gills white, 4—6 mm broad, attenuating at stem or on both ends, sometimes also decurrent. Spore powder white. Spores warty, partly with connecting lines : 5c, 4a (S c h a e f f e r's spore table, 1952) ; 7,5—9x6—8 p. Cystids somewhat protuberant, rather broad. Stem white, moderately elongato-striate, compact, then spongy-hollow, rind somewhat harder, more or less equally thick, 25—40x6—10 mm ; no eosine color reaction wdth sulphovanilline (without reaction of brilliant carmine red). Flesh white, fragile, mild, odorless. This species is rather nearly related to R. lilacea ; it is also similar to R. rosea (this resemblance was Kühner & R o m a g n e s i's starting point when examining Singer's type specimen). Herb, and mycocoenological survey data : as above data. Russula lepida Fr. One of the most frequent Russula species in Hungary. It ranges over Europe, and is frequent in also other areas. According to our coenological surveys, it is association-indifferent. Herb. : 24 data from the areas of the Central Mountains and the Transdanubium. Lit.: Bohus (1943, 1952), Konecsni (1954—55), Moesz (1930, 1942), Szemere (1926), Ubrizsy (1940, 1941, 1956, 1959). Mycocoenological survey data (Bohus&Babos 1958) : In the course of coenological surveys, it was found in the following associations, that is, forest types, in the Western Transdanubium : Pineto-Quercetum, Luzulo-Quercetum myrtületosum ; in the area of the Hungarian Central Mountains : Luzulo-Quercetum subcarpaticum Dicranum facies, Luzulo-Quercetum subcarpaticum myrtilletosum, Luzulo-Quercetum subcarpaticum fagetosum, Genisto pilosae-Quercetum petraeae matricum, Potentillo-Quercetum (petraea, cerris) pannonicum, Querceto petraeae-Carpinetum pannonicum caricetosum pilosae and in a transitional beech stock. Russula lilacea Quel. This rare species, never found in large areas of Europe, is rare also in Hungary, though we succeeded to collect it on some occasions in recent years. From a coenological point of view, it transpires from the meagre data at our disposal