A new species of Infundibulicybe (viz. I. mediterranea sp. nov.) is described from Sardinia based both on morphological and molecular ITS data. The species, a close ally of I. gibba, differs from the latter in the darker tinges of the basidiomata, the stipe, which is nearly concolorous with the pileus, and smaller basidiospores. Drawings of the main micromorphological features as well as a color photograph of fresh basidiomata in situ are provided.

Trichocybe, a new genus of Agaricales, is described to accommodate the rare species Clitocybe puberula characterized by an isolated phylogenetic position. Trichocybe is distinguished from its allied clitocyboid genera by a unique combination of macro-and micromorphological characters, including a Gymnopus-like habitus, a pubescent pileus with squamulose flocci, an eccentric stipe growing on wood debris, a putrescent non-reviviscent context, a strongly farinaceous odour, rare but clearlydifferentiated cheilocystidia, an unusual, strongly differentiated pileipellis, a subpellis with vesiculose-physaloid elements, a stipitipellis with diverticulate hyphae, and smooth, acyanophilous, inamyloid basidiospores. Trichocybe is so far known only from northwestern Europe. Based on a LSU-and 5.8S-rDNA Bayesian phylogenetic analysis, Trichocybe clusters within the Tricholomatoid clade, where it occupies an isolate position. Furthermore, according to the present analysis, also Clitocybe phaeophthalma seems to represent an independent evolutive line in the clitocyboid fungi, which suggests adopting the genus Singerocybe Harmaja for this taxon as well as similar ones.

No abstract

-"Laccaria tortilis" sensu Clémençon 1984 is described as the new form, Laccaria tortilis f. clemenconii, based on material from Kamchatka (Asiatic Russia), Switzerland, Austria, and Italy. ITS rDNA analysis indicates that the new form is molecularly identical to Laccaria tortilis, although smaller spores with shorter spines distinguish it morphologically. Scanning electronic micrographs of the spores and a dichotomous key to European Laccaria species with mono-bisporic basidia, are provided.

The new species Gamundia nivea is described from an Abies alba wood in France. The main features of the new species are: small size, white colour of the whole basidioma, broadly ellipsoid to ellipso-ovoid, echinulate basidiospores and very wide cystidia. A full macro-and micromorphological description, a photograph of fresh basidiomata and line-drawings of relevant micromorphological features are presented, together with a taxonomical discussion on the differences between the new species and its closest allies.The small genus Gamundia Raithelh., segregated from Fayodia Kühner sensu Singer (1975) by Raithelhuber (1979) and typified by Rhodocybe striatulaKühner (1928), belongs to the fayodioid clade sensu Moncalvo et al. (2002) of the Agaricales, together with Fayodia, Caulorhiza Lennox, Conchomyces Overeem and Myxomphalia Hora. The genus, rather homogeneous and with a distribution mostly in Europe, encompasses white-spored, lamellate saprotrophic fungi with thinwalled, non-amyloid, echinulate spores, large cheilo-and pleurocystidia and a pileipellis made up of a cutis that may have a gelatinized suprapellis (Antonín and Noordeloos 2004). The very closely related genus Fayodia is distinguished by the two-layered spore wall consisting of a non-amyloid, echinulate-verruculose epispore and a smooth amyloid perispore, and by a never gelatinised pileipellis (Bigelow 1979, 1983, Antonín and Noordeloos 2004.While exploring the mycologically still poorly known site of Liebenweiler, in northern France, in a conifer wood dominated by Abies alba Mill., a striking acicolous species belonging to Gamundia was collected, for which, owing to its very peculiar macro-and micro-morphological features, no name turned out to be available. Below, the species is described as new to science. Material and methodsThe description of macro-and micro-scopical features are drawn from notes taken on fresh material. The observations of microscopic features were made on fresh material mounted in 3% KOH, Melzer's reagent and Cresyl blue; Toludine blue and Congo red were utilized to highlight gelatinized hyphae. Spore size is expressed both as a range and a mean value based on 90 randomly chosen spores from three basidiomes. In the microscopic descriptions, Qm denotes the average ratio of length and width of the spores. Author citations follow the 'IPNI Authors' website and the 'Index Fungorum Authors' of 'Fungal Names' website . All the material examined is housed at TO. The description of the new species was deposited in MycoBank with the number MB 516526.Gamundia nivea Musumeci, Vizzini et Contu sp. nov. (Fig. 1-2)