L. Hably szerk.: Studia Botanica Hungarica 20. 1988 (Budapest, 1988)
Révay, Ágnes: Dematiaceous Hyphomycetes inhabiting forest debris in Hungary III.
Arthrinium morthieri Fuckel - Symb. mycol. 357, 1870. (Pl. V, Fig. 3) Colonies compact, pulvinate, dark blackish-brown. Conidiophore mother cells subspherical 5-6 x 4.2-5,/um. Conidiophores simple, straight or flexuous, cylindrical, hyaline with thick dark-brown transverse septa, smooth-walled, 50-90 x 3.5-4.5yum. Conidia flattened, irregular or oblong in face view, triangular in side view, pale-brown, smooth-walled, 12.8-16 x 6. 4-8. 5jum in face view, 6-8yum thick. Sterile cells usually spherical, almost hyaline or very pale-brown 8-9. 6yum in diameter. Arthrinium Kunze ex Fries is a genus containing many species occurring on various Carex species. Of these species only A. caricicola, A. puccinioides and A. sporophleum are known to occur in Hungary. The data of the fungus collection (BP) indicate that Arthrinium sporophleum seems to be the most common species of Arthrinium in Hungary. The present collection constitutes the first record of Arthrinium morthieri from Hungary. This species is known only from Sweden and Switzerland (ELLIS 1965). - Collected on dead leaves of Carex sp. , near Szelcepuszta in the Aggtelek National Park, 21 May, 1987. Arthrobotryum stilboideum Ces. - Hedwigia, 1: Tab. 4, Fig. 1, 1854. Synnemata erect, straight, cylindrical, black, up to lOOOjum high, 20-35/im thick, head up to 120 jam in diameter. Conidiophore threads 2-3. 2 /am thick, branching towards the apex. Conidia ellipsoidal or cylindrical, rounded at the apex, truncate at the base, pale-brown, (2-)3-septate, 12-14 x 3-4jum. This species was not previously reported from Hungary. Collected on dead wood of Fagus sylvatica , in the valley Sebesvizvölgy in the Bükk Mts, 3 December, 1985. Bactridium flavum Kunze - Mykol. Hefte 1:5, 1817. (Pl. II, Fig. 5) Sporodochia globose or hemispherical, golden-yellow, up to 700 jum in diameter. Conidiophores crowded, hyaline, cylindrical, septate, 80-140 x 8-lOjum. Conidia clavate or nearly ellipsoidal, rounded at the distal end, truncate at the base, 2-4-septate, thick walled, subhyaline or yellowish, 140-180 x 29-36jum. Bactridium flavum was reported from Hungary on three occasions by VASS (1972, 1977) and ZELLER and TÓTH (1960). - Collected on dead wood, near Ómassa in the Bükk Mts, 10 October, 1984. Bactrodesmiastrum obscurum Hoi.-Jech. - Folia geobot. phytotax. 19:103, 1984. (Pl. IV, Fig. 1) Conidiophores arising on basal hyphae, at first singly, later aggregated in groups, unbranched, cylindrical to conical, truncate at the apex, pale-brown then dark-brown, 8-14 x 4-8/im, 1.5-2jum wide at the apex. Conidia formed singly on the top of conidiophores, clavate, pyriform, 3-septate, young conidia subhyaline, mature conidia dark-brown with two distal cells darker and two proximal cells paler, 27-31 x 12-14 jum. The monotypic new genus Bactrodesmiastrum containing B. obscurum was described by HOLUBOVÁ-JECHOVÁ (1984) from dead rotten wood of Fagus sylvatica collected in Czechoslovakia. The present collection is the first record of B. obscurum from Hungary and is apparently only the second collection since the description of species. - Collected on dead wood of Fagus sylvatica, in the valley Sebesvizvölgy in the Bükk Mts, 24 June, 1987. Bactrodesmium atrum M. B. Ellis - Mycol. Pap. 72:9, 1959. (Pl. II, Fig. 1) Sporodochia scattered, punctiform, black shining. Conidiophores fasciculate, unbranched, flexuous, subhyaline, 20-30 x 2-4/im. Conidia obovoid, almost black except near the base where the cells are subhyaline or pale-brown, all septa can only be seen on young conidia as In mature conidia all except the basal cells are obscured by the black pigment in the wall, 4-7-septate, 45-70 x 24-30jUm. This is not a common species, it is represented in the BP only in two collections, including the present one from Hungary. - Collected on dead wood of Fagus sylvatica , near Rejtek in the Bükk Mts, 26 March, 1986. Brachydesmiella biseptata Arnaud ex Hughes - Can. J. Bot. 39: 1095, 1961. (Pl. II, Fig. 3) Colonies black, shining. Conidiophores simple, erect, flexuous, pale-brown, up to 50 jam long, 3-4pm wide at the base and 6-8.5yum towards the apex. Conidia solitary, limoniform, 2-septate, the central cell very large, brown or almost black, the end cells small, subhyaline, 36-43 x 16-22/jm. It is the first record of B. biseptata from Hungary. - Collected on dead twig of Fagus sylvatica , in the valley Sebesvizvölgy in the Bükk Mts, 3 December, 1985.
