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Ascomycete.org - Volume 9
Cette section propose la liste des articles du volume courant, avec le résumé anglais. Pour télécharger ces articles, il faut être membre d'Ascomycete.org, sauf pour les articles proposés en Open Access Open Access

Fascicule 1 - Janvier 2017 (en ligne 07/01/2017)

puce Barssia peyronelii comb. nov. (Pezizales) for the old Mattirolo’s species Stephensia peyronelii PDF
  Agnello C., Kaounas V. 1-5
Abstract: Thanks to the study of the original material of Stephensia peyronelii Mattir., recently discovered in the herbarium of the university of Turin, we propose a new combination in the genus Barssia. The work is accompanied by micrographs, an old plate by O. Mattirolo and an updated key to the genus Barssia.
puce Hydropisphaera foliicola, a new species from Martinique PDF
  Lechat C., Fournier J. 6-8
Abstract: A detailed description of Hydropisphaera foliicola sp. nov. is presented, based on a collection on dead leaf of Pouteria pallida (C.F. Gaertn.) Baehni (Sapotaceae) in Martinique (French West Indies). The fungus was cultured and sequenced; no asexual morph was obtained in culture but fertile ascomata occurred after five weeks. This species resembles H. erubescens (Roberge ex Desm.) Rossman & Samuels but differs from it in having significantly smaller ascospores.
puce Combinaisons nouvelles de Pezizales PDF
  Van Vooren N. 9-10
Abstract: Proposal of new combinations of some pezizalean species. Galactinia hypoleuca is combined in the genus Peziza Fr. s. lato, and illustrated microscopically after the revision of the holotype; Pachyphloeus oleiferus is combined in the genus Pachyphlodes Zobel; Pulvinula ovalispora is combined in the genus Boubovia Svrcek; and Aleuria latispora is combined in the genus Melastiza Boud. Comments are provided for each species..
puce Four new species of Ijuhya (Bionectriaceae) from Belgium, metropolitan France and French Guiana PDF
  Lechat C., Fournier J. 11-18
Abstract: Four new species of Ijuhya are described and illustrated based on material collected in Belgium, metropolitan France and French Guiana. The four new species described herein were sequenced and one of them was successfully cultured. They are placed in the Bionectriaceae based on ascomata not changing colour in 3% KOH or lactic acid, acremonium-like asexual morph and phylogenetic affinities of LSU sequences with five morphologically related genera of the Bionectriaceae. Their placement in Ijuhya is based on morphological and phylogenetic comparison with the most similar genera including Lasionectria and Lasionectriella. An updated dichotomous key to Ijuhya is presented.

Fascicule 2 - Février 2017 (en ligne 25/02/2017)

puce Typification of Gyromitra perlata, type-species of the subgenus Discina (Discinaceae) PDF
  Van Vooren N. 19-22
Abstract: Peziza perlata Fr., basionym of Gyromitra perlata, is the type-species of the subgenus Discina. As many old names attached to supposed well-known species, its type is not clearly defined. Based on a sample from Fries’ herbarium, we propose the neotypification of this name to fix the main morphological and microscopic characters of the species
puce First report of a lichenicolous species of Hypomyces (Hypocreaceae), H. peltigericola sp. nov. PDF
  Lechat C., Gardiennet A., Fournier J. 23-26
Abstract: Hypomyces peltigericola sp. nov. is described and illustrated based on material collected in France on thalli of the lichen Peltigera canina. In culture the ascospores yielded a cladobotryum-like asexual morph that was sequenced. The placement of this new species in the aurofusarin-group of the genus Hypomyces is based on the combination of morphological characters of sexual and asexual morphs as well as the comparison of its ITS rDNA sequence with those of this group available in GenBank.
puce Apports à la connaissance de Peziza lilacinoalba, une espèce subalpine PDF
  Dougoud R. 27-31
Abstract: The macroscopic and microscopic characters of Peziza lilacinoalba, an uncommon subalpine species, only known from the original collections, are described and illustrated from fresh material found in Switzerland
puce Additional reports on coprophilous Lasiosphaeriaceae from tropical climates PDF
  Doveri F. 32-58
Abstract: Following a recent work on coprophilous Cercophora species from tropical climates, this paper deals with more species of Lasiosphaeriaceae from the same climates. Coprophilous Lasiosphaeriaceae are divided into groups according to their regularity of growing on dung. Three additional Cercophora species and two Podospora, some of which are vey rare or even never recorded since the original finding, are described in detail and compared with similar taxa. A key is provided to the complex of Cercophora species with a palisade or tufts of swollen and agglutinated neck hairs.

Fascicule 3 - Avril 2017 (en ligne 30/04/2017)

puce Hydropisphaera heliconiae, a new species from Martinique (French West Indies) PDF
  Lechat C., Fournier J. 59-62
Abstract: A detailed description of Hydropisphaera heliconiae sp. nov. is presented based on two collections on dead leaves of Heliconia caribea (Heliconiaceae) in Martinique (FWI). The fungus was cultured and sequenced and its placement in the genus Hydropisphaera confirmed by analysis of LSU sequences. This species primarily differs from all known species in having ascomata nearly black when mature and deeply cupulate when dry. The new combination Ijuhya boothii is proposed for a taxon examined during this study that was formerly placed in Hydropisphaera.
puce Beiträge zur Erforschung der Pilzflora Äthiopiens. Operculate Discomyceten, Teil 2: Tricharina aethiopica sp. nov. PDF
  Lindemann U. 63-66
Abstract: Tricharina aethiopica is described as a new species. The morphological features are compared with the hitherto known species of Tricharina.
puce The genus Biscogniauxia (Xylariaceae) in Guadeloupe and Martinique (French West Indies) PDF
  Fournier J., Lechat C., Courtecuisse R. 67-99
Abstract: This survey deals with the Biscogniauxia taxa collected in the French West Indies in the course of an ongoing inventorial work on the mycobiota of these islands initiated in 2003. Based on the evaluation and comparison of their morphological characters, fourteen taxa are described, illustrated and discussed, including four new taxa, viz.: B. breviappendiculata, B. martinicensis, B. nigropapillata and B. sinuosa var. macrospora and a collection of uncertain taxonomic position tentatively regarded as related to B. uniapiculata. The nine known taxa that we recorded include B. capnodes, B. capnodes var. limoniispora, B. capnodes var. theissenii, B. citriformis, B. citriformis var. macrospora, B. grenadensis, B. philippinensis, B. uniapiculata and B. viscosicentra. Only three of the taxa that we report here were already known from the Caribbean, viz.: B. grenadensis, B. uniapiculata and B. cf. uniapiculata, and all are new to the French West Indies, except the latter which was collected in Guadeloupe. A dichotomous identification key and a synoptical table of ascospores are presented as well.
puce Revue bibliographique: Les Terfess et les Truffes du Maroc  Open Access PDF
  Van Vooren N. 100

Fascicule 4 - Juillet 2017 (en ligne 19/07/2017)

puce Emendation of the genus Tricharina (Pezizales) based on phylogenetic, morphological and ecological data PDF
  Van Vooren N., Lindemann U., Healy R. 101-123
Abstract: Tricharina is one of the most difficult genera of Pezizales because it is hard to distinguish morphologically among species. To provide a more robust taxonomy, new investigations on the genus were conducted, both morphologically and phylogenetically. This study focuses on the four key species of the genus: T. ascophanoides, T. gilva, T. ochroleuca and T. praecox. The type material of these species was reviewed. In the literature, T. gilva is considered to be close or even identical to T. ochroleuca. The phylogenetic analysis shows that all recent collections identified as T. ochroleuca appear to be T. gilva. Furthermore, the morphological study of the type material of T. ochroleuca leads to the conclusion that the name is a nomen dubium. The presence of several endophytes sequences in the Tricharina-core clade suggests that this genus has an endophytic lifecycle. The confusion between T. gilva and T. praecox, both considered as pyrophilous species, is now resolved thanks to phylogenetic analyses and new data based on vital taxonomy. In contrast to T. gilva, which can occasionally grow on burnt places, T. praecox is a strictly pyrophilous taxon and belongs genetically to a different clade than T. gilva. In agreement with art. 59 of ICN, the anamorphic genus Ascorhizoctonia is used to accommodate the species belonging to the “T. praecox clade”. T. ascophanoides, an extra-limital species, is excluded from the genus Tricharina and combined in the genus Cupulina based on the phylogenetic results. The genetic exploration of some other tricharinoid species, i.e. Leucoscypha semi-immersa and L. patavina, confirms they do not belong to the genus Leucoscypha in its original sense, and deserve their own genus. The name Sepultariella is validated to accommodate the latter.
puce Further interesting lichens and lichenicolous fungi from Fuerteventura, Canary Islands (Spain), with three new species and notes on Mixtoconidium PDF
  Van den Boom P.P.G., Etayo J. 124-134
Abstract: Fifty-two taxa of lichens and lichenicolous fungi from Fuerteventura (Canary Islands) are presented as a result of recent fieldwork. For each taxon, information about habitat and substrata is given. Forty-seven species are newly recorded from the island, including the rare lichenicolous fungi Arthonia follmanniana and Stigmidium epistigmellum, the latter previously only known from America, and three new species described here: Lecania euphorbiae, Staurothele alboterrestris and Stigmidium seirophorae. The new combination Variospora fuerteventurae is proposed for Caloplaca fuerteventurae. In a revision of the genus Mixtoconidium the new combinations Mixtoconidium insidens and M. nashii are proposed.
puce Pseudotricharina lanigera (Pezizales), a new species from the Patagonian region of Argentina PDF
  Healy R., Pfister D.H., Mujic A.B., Torres D., Nouhra E., Furci G., Smith M.E. 135-138
Abstract: A species of Pseudotricharina, similar in sequence and morphology to the type species P. intermedia, is described from a soil bank in a Nothofagus forest of the Andes Mountains of Argentina. This is only the second species of Pseudotricharina to be described and the first known from the Southern Hemisphere.

Fascicule 5 - Septembre 2017 (en ligne 27/09/2017)

puce Lamprospora pseudoarvensis sp. nov. (Pezizales) – a lookalike tracked down PDF
  Vega M., Eckstein J., Friebes G., Tena Lahoz R., Gube M. 139-148
Abstract: Lamprospora pseudoarvensis is described as a new species based on ecology, morphology and phylogenetic analyses. Differences from other bryophilous Pezizales occuring on species of Pleuridium are discussed as well as differences from morphologically similar bryophilous Pezizales. New statements on L. dicranellae are reported. A dichotomous key to L. pseudoarvensis and similar species is given.
puce A new species of Ijuhya (Bionectriaceae) from Tenerife (Spain) PDF
  Lechat C., Fournier J., Negrin R. 149-152
Abstract: A new species of Ijuhya is described and illustrated based on material collected in the Canary Island of Tenerife (Spain). The new species described herein was sequenced. Based on ascomata not changing colour in 3% KOH or lactic acid and phylogenetic analysis, this species is placed in the Bionectriaceae as defined by Rossman et al. (1999). Its placement in Ijuhya is based on morphological and phylogenetic comparison with the most similar genera including Lasionectria (Sacc.) Cooke and Lasionectriella Lechat & J. Fourn. Ijuhya aurantiaca differs from other Ijuhya species by bright orange ascomata and 3–5-septate, conspicuously striate ascospores. An updated dichotomous key to Ijuhya is presented.
puce A new species of Striatibotrys from Asturias (Spain), S. asturiensis PDF
  Lechat C., Hairaud M., Rubio E. 153-155
Abstract: A detailed description of Striatibotrys asturiensis sp. nov. is presented, based on a collection on dead stems of Veratrum album (Melanthiaceae) in Asturias (Spain). The fungus was cultured and sequenced; no asexual morph was obtained in culture but molecular data place this species in Striatibotrys Lombard & Crous (Lombard et al., 2016). This species resembles S. oleronensis (Lechat, Hairaud & Lesage-Meessen) Lombard & Crous but differs from it in having glabrous ascomata and larger ascospores surrounded by a wide gelatinous sheath.
puce The first record of Urnula mediterranea (Pezizales) in Continental Europe PDF
  Milosavljević N. 156-163
Abstract: All previous collections of the rare fungus Urnula mediterranea were recorded on the Mediterranean coast or Atlantic coast of Europe. Our discovery in Serbia represents the first ever recorded in continental part of Europe. We present herein photographs made on this new locality, along with microscopic and macroscopic descriptions.
puce Two new species of Podosordaria (Xylariales): P. cynomys and P. cypraea PDF
  Bell A., Mahoney D. 164-170
Abstract: Two new species of the infrequently seen genus Podosordaria, P. cynomys on dung and P. cypraea on decaying wood, are described and illustrated. Both species are among the seldom reported Podosordaria species characterized by uniperitheciate sessile stromata. In each the orange white/orange grey stromatic tissue envelops a single dark perithecium except for the blackish perithecial ostiolar region which barely emerges above the stromatic tissue. Ascus apices are prominently J+ and ascospore longitudinal germ slits extend the entire length, or nearly so. Podosordaria species are generally coprophilous but P. cypraea on a woody substrate is unique. No anamorph was observed in either case and attempts to culture were unsuccessful.
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Tous les éléments | 03 nov. 2016 - Par Senn-Irlet B., Peter M.
Sclerotinia cirsii-spinosissimi is described as a new species from bracts of Cirsium spinosissimum based on morphological, cultural and molecular studies. Ascospore size and absence of small lipid bodies inside the spores are distinctive, medium sized sclerotia are typically produced on solid media in cultures. This description includes earlier molecular studies showing a close relationship to S. borealis. A key is added to Sclerotinia species from arctic-alpine habitats
Tous les éléments | 03 nov. 2016 - Par Van Vooren N.
A Trichophaea species collected in Alpine zone in France, with characters close to those of T. woolhopeia, offers the opportunity to confirm — after a morphological and phylogenetic analysis — that the latter represents a complex of mycorrhizal species difficult to split morphologically. The morphological differences seen on this collection, in particular the size and shape of the ascospores, associated to its alpine ecology, and a probable relationship with Bistorta vivipara, are confirmed by molecular data. We propose it as a new species under the name T. dougoudii
Tous les éléments | 03 nov. 2016 - Par Fournier J., Delgado M.A., Castillo J.
Xylaria xylarioides is reported for the first time from Europe based on two recent collections from Catalonia and Galicia in Spain, and three previous unpublished records including one from Corfu (Greece) and two from Tenerife (Canary Islands) made by Dr. Walter Jaklitsch. An illustrated description of the material collected in Galicia is provided together with comments on the morphological variations encountered in X. xylarioides, its known distribution worldwide, ecology and taxonomic affinities
Tous les éléments | 03 nov. 2016 - Par Doveri F.
Elephant dung, when compared with other dungs from mammalian herbivores, was regarded as an ideal substrate for cellulolytic fungi. One sample of Indian elephant dung, examined for detecting coprophilous ascomycetes, was found to have developed three different Cercophora species. Cercophora elephantina, Cercophora sp. of the complex-sordarioides, and a new species, C. cephalothecoidea, were classified based on morphological characteristics. C. elephantina was described in detail and compared with species having the so called “pseudobombardioid” peridium. Cercophora sp. and C. cephalothecoidea were described, compared and placed in keys with species having a membraneous or carbonaceous peridium, respectively. Bombardia mutabilis and B. rostrata were recombined in Cercophora. Following recent phylogenetic analyses, the morphological and physiological features of family Lasiosphaeriaceae, Cercophora and related genera were re-examined and discussed
Tous les éléments | 03 nov. 2016 - Par Doveri F.
Chaetomium convolutum, newly isolated from herbivore dung in a survey of coprophilous ascomycetes and basidiomycetes, is first described from Italy and compared with other species of the so called “group-bostrychodes”. The taxonomic uncertainty, still present in this group despite a recent comparative, morphological and molecular study, led the author to revise all Italian collections of species related to C. convolutum, and to prove that also the very rare C. hexagonosporum is present in Italy. The morphological features of C. hexagonosporum are described in detail and particularly compared with those of C. convolutum. The results of this review confirm the existence of several intermediates in the group-bostrychodes, for which a much more extended revision is hoped
Tous les éléments | 03 nov. 2016 - Par Van Vooren N.
Report of the Ascomycota Alpine Zone 2015 Foray, organized by Ascomycete.org in the National Park of Vanoise (French Alps), from 23 to 30 August 2015. The list of the 98 collected and studied taxa is also provided
Tous les éléments | 08 juil. 2016 - Par Lechat C., Fournier J., Moreau P.-A.
A new genus, Xanthonectria, is proposed for the enigmatic taxon Nectria pseudopeziza. Xanthonectria is characterized by nonstromatic, soft-textured, superficial, glabrous, pale yellow to bright orange nectria-like ascomata, not changing color in 3% KOH or lactic acid, long fusiform, multiseptate ascospores and an acremonium-like asexual morph. Its placement in the Bionectriaceae and its relationship to other members of this family are based on morphological, cultural and molecular data
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