Ibai Olariaga

• PhD
• Rey Juan Carlos University

Resolving species delimitation issues of European Cantharellus is crucial to correctly name chanterelles around the globe. Thirty names referring to Cantharellus s. str. have been described in Europe, some of which are used in other continents. Based on combined analyses of ITS2, LSU, RPB2 and TEF-1, merely eight species are here recognized in Euro...

Abstract – Species of Cantharellus contain carotenoid pigments, which produce yellow, orange and red colours. As microscopic characters are of limited value to separate species, colour has always been an important taxonomic character for species delimitation in Cantharellus. Entirely white Cantharellus or specimens lacking yellow pigments are occas...

The easily recognised genus Otidea is subjected to numerous problems in species identification. A number of old names have undergone various interpretations, materials from different continents have not been compared and misidentifications occur commonly. In this context, Otidea is monographed, based on our multiple gene phylogenies assessing speci...

Two new species of Hydnum, characterized by slender Hydnum rufescens-like fruiting bodies and ovoid to broadly ellipsoid basidiospores, are described from the Iberian Peninsula based on morphological and ITS molecular data. Hydnum ovoideisporum is distinguished by the pileus with deep orange tones and strong preference for calcareous ground. It is...

The identification of the conventionally accepted species of Clavulina (Cantharellales, Basidiomycota) in Europe (Clavulina amethystina, Clavulina cinerea, Clavulina cristata, and Clavulina rugosa) is often difficult and many specimens are not straightforwardly assignable to any of those four species, which is why some authors have questioned their...

Bark-dwelling fungi represent a group of ecologically highly specialized organisms. This study deals with an undescribed species of Hymenochaete characterized by specifically inhabiting the bark of Pyrenean oak (Quercus pyrenaica), and producing effuse-reflexed basidiomata and mainly globose to subglobose basidiospores. Maximum Likelihood and Bayes...

Basidiomycota is one of the major phyla in the fungal tree of life. The outline of Basidiomycota provides essential taxonomic information for researchers and workers in mycology. In this study, we present a time-framed phylogenomic tree with 487 species of Basidiomycota from 127 families, 47 orders, 14 classes and four subphyla; we update the outli...

The aim of this study is to carry out a taxonomic revision of the groups Calamistratum and Geraniodorum of the genus Inosperma sect. Inosperma in Europe. For this purpose, a multigenic phylogenetic analysis was carried out using the ITS, LSU, RPB1 and RPB2 markers, covering a total of 111 sequences, including those generated from the existing type-...

The Global Consortium for the Classification of Fungi and fungus-like taxa is an international initiative of more than 550 mycologists to develop an electronic structure for the classification of these organisms. The members of the Consortium originate from 55 countries/regions worldwide, from a wide range of disciplines, and include senior, mid-ca...

The systematics of the genus Hydnum have undergone important advances, and many new species have been described with the aid of molecular data. A revision of old names that refer to Hydnum s. str., considering the knowledge now available, might reveal prioritary names of recently described species. This study focuses on the study of names that refe...

Megasporia insularis and Porogramme principes are described as new species based on morphological and molecular data of specimens collected on the Island of Príncipe (São Tomé and Príncipe Archipelago). Megasporia insularis is characterized by the hymenophore with large regular pores, a di-trimitic hyphal system with strongly dextrinoid skeletal hy...

The taxonomy of Inocybe similis and closely allied species is addressed using morphological and molecular data (nrITS and nrLSU DNA). The holotypes of I. chondrospora and I. vulpinella and the isotype of I. immigrans were studied and sequenced. Our results suggest the synonymy between I. similis and I. vulpinella as well as that between I. chondros...

Inocybe hamadryadis sp. nov. is described and a detailed description, colour photographs, microdrawings and photographs of the microscopic features are provided. The type was found under Quercus ilex and Cistus ladanifer in Mediterranean habitat in Spain, but its distribution is throughout Europe and the West Asia. Inocybe hamadryadis is characteri...

A new genus named Dendrodacrys is proposed for a monophyletic group in Dacrymycetaceae, containing species with pulvinate to depressed basidiocarps, distinctly branched hymenial hyphidia, and up to 3-septate mature basidiospores. Four taxa in this group, occurring in Europe, are proposed as new species, viz. De. ciprense, De. concrescens, De. ellip...

Although gypsum outcrops are considered biodiversity hot-spots, soil fungal communities from these ecosystems have been scarcely studied. As with plants, it is expected that the establishment and growth of fungi is restricted by soil gypsum content, but information on the distribution of fungi in relation to gypsum content is lacking. Soil fungal c...

Psathyrella griseovelata is described as a new species, based on morphological and molecular data. Morphologically, P. griseovelata is characterized by its fascicled or subfascicled growth habit, the thick silvery veil in young basidiomata, the predominant grey colour of the pileus and the frustoconical spores. Besides ha- ving unique morphological...

Novel species of fungi described in this study include those from various countries as follows: Antartica, Cladosporium austrolitorale from coastal sea sand. Australia, Austroboletus yourkae on soil, Crepidotus innuopurpureus on dead wood, Curvularia stenotaphri from roots and leaves of Stenotaphrum secundatum and Thecaphora stajsicii from capsules...

En esta guía se estudian de una forma rigurosa, amplia y científica las principales especies de setas que pueden encontrarse comercializadas en nuestra comunidad autónoma, cultivadas o que crecen de forma natural. Para facilitar la identificación de cada una de las especies y géneros, en la mayoría de ellos se han destacado sus caracteres macroscóp...

The class Eurotiomycetes (Ascomycota, Pezizomycotina) comprises important fungi used for medical, agricultural, industrial and scientific purposes. Eurotiomycetes is a morphologically and ecologically diverse monophyletic group. Within the Eurotiomycetes, different ascoma morphologies are found including cleistothecia and perithecia but also apothe...

ABSTRACT Galerina esteveraventosii Siquier, Olariaga, Salom & Høiland sp. nov., is described based on samples collected on Eivissa and Mallorca (Balearic Islands, Spain) and on Farsund (Norway). The new species is characterized by having slender basidiomata, a stipe that becomes dark from the base, fugacious ring, as well as by the spores that are...

Lichens, as well as other organisms, should be considered important biodiversity components for the establishment of priorities in conservation biology. In this study, we report six new recent localities of the highly endangered, epiphytic macrolichen Pseudocyphellaria aurata in Spain: two in Navarra and four in A Coruña. Previous Spanish reports b...

Cantharellales constitutes a basal lineage of Agaricomycetes in which two groups can be divided: (a) Hydnaceae and Botryobasidiaceae, characterized by resupinate or more complex basidioma configurations (cantharelloid, hydnoid, clavarioid), along with stichic basidia which often are (sub-)urniform and have more than 4sterigmata, and (b) Cejpomyceta...

Hyphoderma etruriae is a very rare corticioid species, described originally from Italy and more recently reported from Macedonia, always growing on decayed wood of Juniperus spp. It was now found in Lisbon, on a stump of Cupressus lusitanica. Several authors have suggested that H. etruriae could be related to Hyphoderma capitatum and Hyphoderma orp...

Inocybe similis, a very rare smooth-spored species originally described from Italy by Bresadola, is illustrated. Based on sequence generated from the type specimen, freshly collected specimens from five sites, Grado in north-east Italy, Tolmin in Slovenia, Forchach and Rieden in Austria and Füssen in Gemany could be asigned to I. similis and a more...

The identity of Calicium corynellum (Ach.) Ach. - Volume 52 Issue 4 - Maria Prieto, Ibai Olariaga, Sergio Pérez-Ortega, Mats Wedin

Typhuloid fungi are a very poorly known group of tiny clavarioid homobasidiomycetes. The phylogenetic position and family classification of the genera targeted here, Ceratellopsis, Macrotyphula, Pterula sensu lato and Typhula, are controversial and based on unresolved phylogenies. Our six-gene phylogeny with an expanded taxon sampling shows that ty...

Typhuloid fungi are a very poorly known group of tiny clavarioid homobasidiomycetes. The phylogenetic position and family classification of the genera targeted here, Ceratellopsis, Macrotyphula, Pterula sensu lato and Typhula, are controversial and based on unresolved phylogenies. Our six-gene phylogeny with an expanded taxon sampling shows that ty...

The scientific outcome of the 2nd Meeting of the Iberian Mycological Society, held in Cerler (Huesca, Spain), is presented here. After conducting fieldwork in 8 localities 949 georeferenced records of fungi belonging to at least 545 species were generated. One hundred and four species are reported for the first time for Aragon, whereas two, Agaricu...

Novel species of fungi described in this study include those from various countries as follows: Antarctica , Apenidiella antarctica from permafrost, Cladosporium fildesense from an unidentified marine sponge. Argentina , Geastrum wrightii on humus in mixed forest. Australia , Golovinomyces glandulariae on Glandularia aristigera , Neoanungitea eucal...

Novel species of fungi described in this study include those from various countries as follows: Australia, Chaetomella pseudocircinoseta and Coniella pseudodiospyri on Eucalyptus microcorys leaves, Cladophialophora eucalypti, Teratosphaeria dunnii and Vermiculariopsiella dunnii on Eucalyptus dunnii leaves, Cylindrium grande and Hypsotheca eucalypto...

Sclerococcales encompasses a heterogeneous group of fungi, with most of the species included in the genus Sclerococcum (= Dactylospora). Species of Sclerococcum are characterized by having apothecial ascomata with asci covered by an external hemiamyloid gelatin and a thick euamyloid apical cap, while lacking an inner amyloid wall thickening. Asexua...

Pseudotricholoma metapodium is assessed as endangered (EN) on the global red list.

Here, we show that Lichinodium (Lichinaceae, Lichinomycetes, Ascomycota) constitutes a formerly unrecognized lineage within the Leotiomycetes, thus being the first lichenized lineage recognized in the superclass Sordariomyceta (Leotiomycetes, Laboulbeniomycetes and Sordariomycetes). To infer the position of Lichinodium, we constructed two multilocu...

Abstract Inocybe mixtilis constitutes a complex of species characterized by nodulose-angulose spores, absence of cortina and a more or less bulbous marginate stipe that is not darkening when desiccated. In order to elucidate species limits within the I. mixtilis complex, an ITS-RPB2 phylogeny was performed and interpreted using morphological and ec...

Nomenclatural type definitions are one of the most important concepts in biological nomenclature. Being physical objects that can be re-studied by other researchers, types permanently link taxonomy (an artificial agreement to classify biological diversity) with nomenclature (an artificial agreement to name biological diversity). Two proposals to am...

In this study, 49 species of Hydnum are recognized worldwide. Twenty-two of them are described here as new species. Epitypes are proposed for H. repandum and H. rufescens. The majority of the species are currently known only from a single continent. The barcodes produced in this study are deposited in the RefSeq database and used as a basis to name...

Novel species of fungi described in this study include those from various countries as follows: Antarctica: Cadophora antarctica from soil. Australia: Alfaria dandenongensis on Cyperaceae, Amphosoma persooniae on Persoonia sp., Anungitea nullicana on Eucalyptus sp., Bagadiella eucalypti on Eucalyptus globulus, Castanediella eucalyptigena on Eucalyp...

Cryptodicus muriformis and Schizoxylon gilenstamii (Stictidaceae, Ostropales, Lecanoromycetes, Ascomycota) are described as new to science from collections made in Europe (Sweden, Austria, Switzerland) and North America (Arizona), based on phylogenetic analyses of three loci. Both species show unique morphological characters that distinguish them f...

This paper continues the taxonomic revision of the species collected during the campaign of 2015 in the National Park of Ordesa and Monte Perdido. 409 taxa are added to the previous inventory, some of them from alpine-subalpine ecology, of which 76% correspond to phylum Basidiomycota and 22.2% to Ascomycota. They are presented in the form of a chec...

Fresh collections, type studies and molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, rpb2, tef1 and tub2 sequences were used to evaluate the boundaries of Cucurbitaria in a strict sense and of several related genera of the Cucurbitariaceae. Two species are recognised in Cucurbitaria and 19 in Neocucurbitaria. The...

Knowledge of the relationships and thus the classification of fungi, has developed rapidly with increasingly widespread use of molecular techniques, over the past 10–15 years, and continues to accelerate. Several genera have been found to be polyphyletic, and their generic concepts have subsequently been emended. New names have thus been introduced...

Cyphelloid fungi represent a polyphyletic assemblage of reduced agarics, including the brownspored family Chromocyphellaceae. In order to elucidate the phylogenetic position of Chromocyphellaceae, newly generated sequences of Chromocyphella were included in a multigene alignment of the Agaricineae and phylogenetically analyzed. The current analyses...

Elaphomyces (‘deer truffles’) is one of the most important ectomycorrhizal fungal genera in temperate and subarctic forest ecosystems, but also one of the least documented in public databases. The current systematics are mainly based on macromorphology, and is not significantly different from that proposed by Vittadini (1831). Within the 49 species...

Climacodon comprises species characterized by a hydnoid hymenophore, a monomitic hyphal system and spores without iodine reactions. Climacodon pulcherrimus is unique within Climacodon due to having multiple clamp connections. Current taxonomy of Climacodon relies exclusively on treatments based on morphological observations. In this study, we const...

Novel species of fungi described in this study include those from various countries as follows: Australia: Apiognomonia lasiopetali on Lasiopetalum sp., Blastacervulus eucalyptorum on Eucalyptus adesmophloia, Bullanockia australis (incl. Bullanockia gen. nov.) on Kingia australis, Caliciopsis eucalypti on Eucalyptus marginata, Celerioriella petroph...

The new species, Typhula suecica, is morphologically characterized by having partially sigmoid spores, projecting thick-walled stipe hairs, and by lacking clamp connections. The polygonal rind cells of the sclerotia are also diagnostic. Phylogenetic analyses of 58 new sequences of the LSU and tEF-la regions show that specimens of T. suecica form a...

Abstract – The authors discuss and illustrate several American collections of Cantharellus that are in one way or another related to species that have previously been reported or described from Wisconsin. These new collections indicate that the potential distribution area of many of these chanterelles may be much larger than generally assumed. Cant...

Abstract – This contribution on the genus Cantharellus in North America introduces three new look-alikes of already known species in the eastern United States and thereby exposes the problem of species delimitation in Cantharellus. The small, reddish pink to orange C. corallinus sp. nov. is yet another look-alike of C. cinnabarinus, while the new C...

Abstract – The authors assembled for the first time a sequence dataset representative of all 29 presently described North American Cantharellus species, including not only all six newly described North American species presented in this special issue, but very importantly, also newly obtained partial ITS and LSU sequence data from the type specimen...

A multigene analysis of a combined ITS, LSU, SSU, rpb2 and tef1 sequence data matrix was applied to infer the phylogenetic position of the genus Teichospora in the Pleosporales, based on isolates from freshly collected material of the generic type T. trabicola and several additional species. Phylogenetic analyses revealed that Misturatosphaeria and...

Species in the Inocybe praetervisa group are characterized by producing nodulose to angular basidiospores and a bulbous, marginate, white stipe devoid of any pinkish to reddish tinge. Species delimitation problems and common misinterpretations in the I. praetervisa group have not yet been resolved through type studies and analysis of molecular data...

Two new species of Thyronectria growing in Mediterranean vegetation are described from southern Spain; they are T. giennensis from Quercus ilex ssp. rotundifolia and T. pistaciae from Pistacia lentiscus. Both species are characterized by morphology of sexual and asexual morphs and by DNA data. They have olivaceous to green-brown muriform ascospores...

Mycena sect. Calodontes is a taxonomically intricate group comprising phylospecies so far not recognizable using a morphological recognition approach. In this study we re-examine and sequence Iberian material of Porpoloma aranzadii, including the type specimen. The dextrinoid lamellar trama and mycelial hyphae in the type specimen, the latter cover...

An epigeous fungus forming sequestrate basidiomata with reduced lamellae is described as new to science. A phylogeny based on ITS, LSU, and ef-1α markers demonstrate that P. secotioides nests with strong support in the Psathyrellaceae, more precisely in the Psathyrella candolleana clade, representing the first secotioid form known in the Psathyrell...

The genus Otidea is one of the more conspicuous members of the Pyronemataceae, with high species diversity in hemiboreal and boreal forests. The genus is morphologically coherent and in previous higher-level multigene analyses it formed a highly supported monophyletic group. Species delimitation within Otidea is controversial and much confusion has...

The large morphological variability of Tricholomopsis rutilans sensu lato is assessed through a detailed morphological study and analyses of the ITS-LSU regions. Our Maximum Likelihood and Bayesian analyses coding indel information show that T. rutilans is actually a species complex. Specimens of T. rutilans s.l. form five lineages, all of them cha...

To analyze the implications of exotic radiata pine (Pinus radiata D. Don) plantations for macrofungal diversity, a comparative mycocoenological survey was conducted over three consecutive years in pine plantations and native oak forests (Quercus robur L.) in the Urdaibai Biosphere Reserve. Macrofungal diversity was analyzed at species and community...

We report 40 species of fungi that have been found during our surveys in 6 different reed stands between 2012-2013. According to our bibliographical search, six new species to the Iberian Peninsula were encountered (Didymosphaeria massarioides, Gibberella cyanea, Lasiobelonium lanceolatum, Leptocorticium utribasidiatum, Orbilia septispora, Tremella...

Mycena sect. Calodontes is a taxonomically intricate group comprising phylospecies so far not recognizable using a morphological recognition approach. In this study we reexamine and sequence Iberian material of Porpoloma aranzadii, including the type specimen. The dextrinoid lamellar trama and mycelial hyphae in the type specimen, the latter covere...

This study explores species limits of a group of Clavaria species with taxonomic and nomenclatural problems and discusses the phylogeny and circumscription of the genus. The nuc 28S rDNA (28S) and internal transcribed spacer region phylogenies resolve species relationships, and the ITS is shown to be an adequate barcode marker for Clavaria. Yellow,...

DNA phylogenetic comparisons have shown that morphology-based species recognition often underestimates fungal diversity. Therefore, the need for accurate DNA sequence data, tied to both correct taxonomic names and clearly annotated specimen data, has never been greater. Furthermore, the growing number of molecular ecology and microbiome projects us...

Inventory and mapping of red-listed vascular flora in Hernani municipality (Gipuzkoa, Basque Country). Mehatxu egoeran dauden landareen inbentarioa eta kartografia Hernani udalerrian (Gipuzkoa, Euskal Autonomia Erkidegoa). ABSTRACT A total of 119 new chorological reports are given for 7 red-listed species, namely, Dryopteris aemula, Hymenophyllum t...

The revision of several families of clavarioid fungi in the Iberian Peninsula necessitated new combinations and names to be used for the Iberian fungal flora. Eight new combinations are proposed in Clavulina, Ramariopsis, and Typhula, and nomenclatural and taxonomic comments are provided in each case. Lectotypes are designated for Clavaria contorta...

Six DNA regions were evaluated as potential DNA barcodes for Fungi, the second largest kingdom of eukaryotic life, by a multinational, multilaboratory consortium. The region of the mitochondrial cytochrome c oxidase subunit 1 used as the animal barcode was excluded as a potential marker, because it is difficult to amplify in fungi, often includes l...

Otidea caeruleopruinosa is recorded for the first time outside Finland. Fur-ther morphological details are provided and a thorough comparison made to the original description. The variability of some characters is discussed and comments on species delimitation and systematic position within Otidea are given. A colour photograph is included, the fir...

Pezizomycetes are poorly known in Sweden compared to the rest of the Nordic countries. Field inventories to improve the knowledge of Pezizomycetes in Sweden were therefore carried out during 2008-2010 in selected areas. Nine new or remarkable species are included in this first contribution, among which five are new to Sweden and two to the Nordic c...