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Seimatosporium vitis was recently described based on the collection of its coelomycetous asexual morph on Vitis vinifera in Italy. In this study Seimatosporium vitis is introduced for the first time from grapevine in Iran. The sexual morph is illustrated and a full description is provided. The connection between two different morphs was proved in culture and based on ITS sequence data.
A new species of Kirschsteiniothelia from dead branches of sessile oak, K. arasbaranica, is described from Arasbaran forests of Iran, using morphological and molecular data. Kirschsteiniothelia arasbaranica, lacking an anamorph, is characterized by possessing eight-spored, cylindrical-clavate, bitunicate, fissitunicate asci, 120-180 × 30-40 µm, with an apical ocular chamber 5–8 µm wide, and ascospores narrowly to broadly ellipsoidal, 1-septate, verrucose to finely spinulose, (30-)34-42(-44) × (12-)13-16(-18) µm, with a distinct mucilaginous sheath. Phylogenetic analysis of a combined sequence dataset of the ITS, LSU and SSU rDNA also supports the recognition of this fungus as a new species. We hereby propose an emendation of the family Kirschsteiniotheliaceae. A dichotomous key for identification of 20 sufficiently documented Kirschsteiniothelia species is also provided.
The diversity of lignicolous freshwater fungi along a north-south latitudinal gradient are currently being studied in Asia. In this paper, we report on 18 collections of asexual morphs of Tubeufiaceae from submerged wood in rivers, streams and a lake in Yunnan Province, China. Taxa are characterized based on morphological characters and analyses of ITS, LSU and TEF1α sequence data. The new genera, Muripulchra with a single species, M. aquatica and Neohelicomyces with three new taxa (N. aquaticus, N. grandisporus, N. submersus) are introduced. Muripulchra is characterized by micronematous conidiophores and obpyriform, septate to muriform conidia. Neohelicomyces is characterized macronematous conidiophores and multi-septate, helicoid conidia. Tubeufia aquatica is introduced as a new species and its phylogenetic relationships with other taxa is discussed. The phylogenetic analyses of a concatenated ITS, LSU and TEF1α dataset place all collections in the family Tubeufiaceae (Tubeufiales) and provide evidence to support the establishment of our new taxa. The asexual morph of Tubeufia cylindrothecia, the type species of Helicomyces (H. roseus) are described herein, phylogenetic relationships assessed and reference specimens are given for these two species. Descriptions and illustrations for the new genera and species are provided with notes on their taxonomy and phylogeny.
Water-filled tree holes (dendrotelmata) are mostly ephemeral micro-ecosystems characterized by high level of heterotrophic microbial activity sustained by allochthonous organic matter. In this paper, description of a five-year long observation of fungal consortia in a Norway maple tree-hole is presented. Overall, 139 fungal taxa were detected. Among them, Excipularia fusispora, Ellisembia leptospora, Rebentischia unicaudata, Tricladium castaneicola, Thielavia terricola and Alternaria spp. occurred most frequently. Our observations suggest that even an individual dendrotelma represents an exceptional microhabitat, forming a hot-spot for microfungi due to its role as a natural spore trap and its (temporarily) aquatic environment. Our results show that this aquatic micro-ecosystem supports highly diverse mycobiota with continuous temporal dynamics, with an important fraction of sporadic taxa.
This paper contributes to studies on the lichen biota of Arctic glacier forelands. The research was carried out in the moraines of three different glaciers in Svalbard: Longyearbreen, Irenebreen and Rieperbreen. In total, 132 lichen taxa and three lichenicolous lichens were recorded. Eight species were recorded for the first time in the Svalbard archipelago: Arthonia gelidae, Buellia elegans, Caloplaca lactea, Cryptodiscus pallidus, Fuscidea kochiana, Merismatium deminutum, Physconia distorta, and Polyblastia schaereriana. One species, Staurothele arctica, was observed for the first time in Spitsbergen (previously recorded only on Hopen island). All the studied glaciers lie in Spitsbergen's warm region. However, Kaffiøyra Plain, where Irenebreen is located, is characterized by higher levels of humidity, which may explain its different lichen composition compared to that of the other two moraines. The forelands of Rieperbreen and Longyearbreen are located in the same area of Svalbard, which is also the warmest and the driest and where high species diversity is expected. This proved to be true for the Rieperbreen moraine, but not for the Longyearbreen moraine, where species diversity was lowest. The expansion of tourism along Longyearbyen appears to be a major factor behind the poor development of lichen biota on the Longyearbreen moraine.
Rhizochaete is a small genus of crust fungi that is closely related to Phanerochaete. A new species Rhizochaete belizensis is described, and three new combinations are proposed. Morphological studies and molecular sequence data from two nuclear ribosomal DNA regions (ITS and LSU) support the recognition of R. belizensis which is closely related to R. radicata. Analyses of sequence data also support the transfer of Phanerochaete flava to Rhizochaete. Phanerochaete percitrina from Cameroon and Peniophora rhizomorpho-sulphurea from India are transferred to Rhizochaete based on morphological studies of type specimens. Phanerochaete rubescens from Taiwan is placed in synonymy under R. borneensis. In addition, Phanerochaete mauiensis is redescribed and illustrated. A key to 13 accepted species of Rhizochaete and three morphologically similar species is presented.
The authors describe ten new taxa for science using mostly both morphological and molecular data. In Basidiomycota, descriptions are provided for Botryobasidium fusisporum sp. nov., B. triangulosporum sp. nov., Cantharellus hydnoides sp. nov. and Hydnum aerostatisporum sp. nov. in Cantharellales; Lactarius rahjamalensis sp. nov. and Russula pseudoaurantiophylla sp. nov. in Russulales and for Mycena paraguayensis comb. nov. in Agaricales. In Ascomycota and hyphomycetes, descriptions are provided for Colletotrichum eryngiicola sp. nov. (Glomerellales), Corynesporella indica sp. nov. (incertae sedis) and Repetophragma zygopetali sp. nov. (Microthyriales).