Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 66. (Budapest 1974)

Babos, M.: Studies on Hungarian Lepiota s. l. species, IV.

quent day. Spores projectile-shaped, measuring 7—-9,3—(10) x 3,2—3,9 p. Basidia club-shaped, measuring 20—30x6,5—8,5 p. Cheilocystidia clavate, 18—31 x 7,8—11—(14) p. The hyphae of the cuticle of the pileus are elongately cylindriform, coloured yellowish-brown to brown by a vacuolar pigment, and discoloure from ammonia. L. castanea QUEL, is similar to L. fulvella and according to the literature more frequent (RBID 1972). Both fungi occur at Mende and on Csúcshegy (Buda Hills), but L. castanea, was also collected — besides above places —• on Szarvashegy, Hársbokorhegy (Buda Hills) and on Murarátka. It grew in oak-forests, pineplantations (Pinus nigra), mixed forests, in locust-tree woods, however, it has not been found so far. It is easy to distinguish it from L. fulvella, because the hyphae of the cuticle on the pileus are coloured by membrane pigments which do not discolour from ammonia, and also the size of its spores is greater. This is a Europe-wide occuring, yet rather rare fungus (REA 1922, LANGE 1935, KÜHNER 1936, LEBEGYEVA 1949, KÜHNER & ROMAGNESI 1953, PILÂT 1951 and 1969, WICHANSKY 1960, MICHAEL & HENNIG 1964, etc.). Herbarial data: Hortobágy, Com. Hajdú-Bihar, on pasture, on the skirts of oak forest, 3 Sept. 1970, leg. BABOS-VÉSSEY. - Mátra Mountains: near Párád, in meadow, 2 Sept. 1969, leg. BABOS-BOHÜS-VÉSSEY. The coenological, ecological and climatic conditions in the two habitats differ completely. The two habitats have only one thing in common, that, namely, both are grasslands. The fact, however, that in spite of above differences L. oreadiformis occurs in both places, suggests that this species is more frequent in Hungary than has been experienced hitherto. Lepiota oreadiformis VEL. (Fig. 5) [syn. L. laevigata LANGE; L. pratensis (FR.) REA] Fig. 5. Lepiota oreadiformis (natural size) and spores (1000 x)