L. Hably szerk.: Studia Botanica Hungarica 18. 1985 (Budapest, 1985)

Gönczöl, János: Forest litter Hyphomycetes from Hungary

Idriella lunata Nelson and Wilhelm (Pl.I, Fig. 4). G.L.BARRON: The genera of Hyphomycetes from soil, p.

210. 1972. Found only in one litter sample, on decaying leaf of Alnus glutinosa, on the bank of Morgó-stream in Börzsöny Mts, 24.9.1983. Conidiophores solitary, simple, sparsely growing on leaf-veins, 8-12 Aim long, 2-2.5 yum wide, somewhat swollen below and tapering towards denticulate apex. Conidia more or less aggregated on tip of conidiophores, hyaline, nonseptate, falcate, with acutely pointed ends, 14-16 x 1.6-1.8 Aim. Nematogonium highlei (A.L.Smith) Matsushima (Pl.II, Figs 3-4). T.MATSUSHIMA: Icones microfungorum, p.

101., PI.

6, 1-4., 1975. Collected on unidentified decaying leaf, on the bank of Morgó-stream in Börzsöny Mts, 9.2.1984. A few conidiophores were growing on the decaying leaf substrate which were simple, erect, 600-1000 Aim long, 9-14 Aim wide, thick-walled, very pale brown (almost hyaline), somewhat swollen at the base, 8-11 septate, straight, but may be geniculate when intercalary ampullae present. Number of ampullae were only two on the observed conidiophores. Ampullae (conidiogeneous cells) subsphaerical (16-20 yum diam.), or elliptical (18-24 x 16-20 yum), polyblastlc, denticulate. Conidia in acropetal chains, subhyaline or very pale yellowish-green. Primary blastoconidia ellipsoidal, obovoid or somewhat pear-shaped with truncated or pointed basal end, 20-26 x 9-13Aim. Secondary and subsequent conidia are considerably smaller (14-15 x 9-11 um), constructing straight or branched chains. Menispora caesia Preuss. M.B.ELLIS: More Dematiaceous Hyphomycetes, p.

461. 1976. On decaying fruit of Fraxinus sp. in Bükk Mts, Bányahegy, 10.8.1983. Colonies minute, greyish, irregular, velvety, composed of coniophores and scattered steril setae. Setae unbranched, straight, curved, undulate, septate, dark brown, paler near the apex, 200-400 yum long, 3-4 Aim wide below, tapering gradually towards the apex. Conidiophores usually branched, brown but paler towards the phialides, 100-200 x 3-4Aim. Conidiogenous cells monophialidic with a poorly developed collarette, hyaline or subhyaline, sometimes swollen at the apex, 20-45 x 3.5-8Aim, developing at end of main axis of conidiophores as well as on its lateral branches. Some of the phialides developing on lateral branches, sometimes bearing another (secondary) phialide instead of a conidium. Conidia in slimy heads, cylindrical to fusiform, slightly curved, non-septate, hyaline, 14-20 x 2.5-3.5 yum. Most of the matured conidia are highly vacuolised. Pseudospiropes rousselianus (Mont.) M.B.Ellis (Pl.Ill, Figs 3-4). M.B.ELLIS: More Dematiaceous Hyphomycetes, p.

221. 1976. On unidentified decaying leaf, collected on the bank of Morgóstream in Börzsöny Mts, 25.11.1983. Colonies minute, dark brown, hairy. Conidiophores solitary, erect, straight or slightly bent, mid- or dark brown, paler and gradually tapering towards the apex, 200-250Aim long, 7-8_Aim wide at the base, 8-10 septate. Apical (conidiogenous) cell very pale brown or subhyaline, with undulate side-wall. Conidia often remaining in aggregated head at the tip of conidiophore, variable in shape and size, cylindrical-fusiform with rounded or more or less pointed apical end, hyaline or subhyaline, 2-7 septate, with a distinct scar at the base. Two kinds of conidial size were seen: a thinner and longer one, 40-45 x 4-5 jum, and a fatter and shorter one, 20-30 x 7-8Aim. Spondylocladiopsis cupulicola M.B.Ellis (Pl.Ill, Figs 1-2). M.B.ELLIS: Dematiaceous Hyphomycetes, p.

295.1971. On skeletonized leaves of Acer sp.

, from the bank of Morgó-stream in the Börzsöny Mts, 24.9.1983. Conidiophores in small groups, simple or branched near the base, pale brown at the base and at the middle part, gradually paler towards the apex, 150-250 yum long, 4.56 yum wide at the base, tapering up to 1.5-2 Aim at the tip. Conidiogenous cells solitary or in pairs or verticils, subsphaerical or irregular in shape, 4-8 jum in diameter, hyaline or very pale brown. Conidia fusiform, hyaline, 2-septate, 18-22 x 2.5-3.5jum. Found on very few occasions in litter samples. Tridentaria glossopaga Drechsler (Pl.I, Fig. 3). CH.

DRECHSLER: Sydowia, Ann.MycoIogici 15,p.

17.1962. Very decayed piece of wood from the litter of a beechwood, near Hollóstető in Bükk Mts, 11.10.1984. Incubated for some days. A small group of freshly grown conidia was noticed on the surface of the wood-piece. Hyaline conidia developed in the air, consisting of a wedge-shaped basal trunk, uniseptate, 10-14 jum long, rather pointed at basal end, widening gradually up to 3-3.5 jum wide tip, from where three finger-like branches diverge. The three fusiform branches are attached to the tip of basal trunk with very narrow isthmuses as it is a well-known characteristic structure of the conidia of the species of Isthmotricladia and Tridentaria. Branches three or more often five septated, 30-40 Aim long, about 3 jum wide at middle part and gradually tapering to the very pointed tips. Amongst the numerous free conidia observed in this sample there were some with two branches, but the majority of the conidia were three-branched. None of the conidia were four-branched. Unfortunately conidiophores of this fungus could not be observed. For the generic classification of this fungus Isthmotricladia Matsushima was also considered, but the definitely