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The identification and proper naming of microfungi, in particular plant, animal and human pathogens, remains challenging. Molecular identification is becoming the default approach for many fungal groups, and environmental metabarcoding is contributing an increasing amount of sequence data documenting fungal diversity on a global scale. This includes lineages represented only by sequence data. At present, these taxa cannot be formally described under the current nomenclature rules. By considering approaches used in bacterial taxonomy, we propose solutions for the nomenclature of taxa known only from sequences to facilitate consistent reporting and communication in the literature and public sequence repositories.

The cryptic lifestyle of most fungi necessitates molecular identification of the guild in environmental studies. Over the past decades, rapid development and affordability of molecular tools have tremendously improved insights of the fungal diversity in all ecosystems and habitats. Yet, in spite of the progress of molecular methods, knowledge about functional properties of the fungal taxa is vague and interpretation of environmental studies in an ecologically meaningful manner remains challenging. In order to facilitate functional assignments and ecological interpretation of environmental studies we introduce a user friendly traits and character database FungalTraits operating at genus and species hypothesis levels. Combining the information from previous efforts such as FUNGuild and FunFun together with involvement of expert knowledge, we reannotated 10,210 and 151 fungal and Stramenopila genera, respectively. This resulted in a stand-alone spreadsheet dataset covering 17 lifestyle related traits of fungal and Stramenopila genera, designed for rapid functional assignments of environmental studies. In order to assign the trait states to fungal species hypotheses, the scientific community of experts manually categorised and assigned available trait information to 697,413 fungal ITS sequences. On the basis of those sequences we were able to summarise trait and host information into 92,623 fungal species hypotheses at 1% dissimilarity threshold. Fungal traits · Trophic modes · Function · Guild · Bioinformatics · High-throughput sequencing · Community ecology

A second genus in Chlorociboriaceae is described here as Brahmaculusgen. nov. Macroscopically distinctive, all species have bright yellow apothecia with several apothecial cups held on short branches at the tip of a long stipe. The genus is widely distributed across the Southern Hemisphere; the four new species described here include two from Chile (B. magellanicussp. nov., B. osornoensissp. nov.) and one each from New Zealand (B. moonlighticussp. nov.) and Australia (B. packhamiaesp. nov.). They differ from species referred to Chlorociboria, the only other genus in Chlorociboriaceae, in their terrestrial habitat and ascomata that are noticeably more hairy than the known Chlorociboria species, most of which have apothecia with short, macroscopically indistinct hair-like elements. Based on our analyses, Chlorociboria as accepted here is paraphyletic. Additional study is needed to clarify where alternative, monophyletic generic limits should be drawn and how these genera may be recognised morphologically. Also described here are three new Chlorociboria spp. from New Zealand (C. metrosiderisp. nov., C. solandrisp. nov., C. subtilissp. nov.), distinctive in developing on dead leaves rather than wood and in two of them not forming the green pigmentation characteristic of most Chlorociboria species. New Zealand specimens previously incorrectly identified as Chlorociboria argentinensis are provided with a new name, C. novae-zelandiaesp. nov.

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 amend the International Code of Nomenclature for algae, fungi, and plants (ICN), allowing DNA sequences alone (of any region and extent) to serve as types of taxon names for voucherless fungi (mainly putative taxa from environmental DNA sequences), have been submitted to be voted on at the 11th International Mycological Congress (Puerto Rico, July 2018). We consider various genetic processes affecting the distribution of alleles among taxa and find that alleles may not consistently and uniquely represent the species within which they are contained. Should the proposals be accepted, the meaning of nomenclatural types would change in a fundamental way from physical objects as sources of data to the data themselves. Such changes are conducive to irreproducible science, the potential typification on artefactual data, and massive creation of names with low information content, ultimately causing nomenclatural instability and unnecessary work for future researchers that would stall future explorations of fungal diversity. We conclude that the acceptance of DNA sequences alone as types of names of taxa, under the terms used in the current proposals, is unnecessary and would not solve the problem of naming putative taxa known only from DNA sequences in a scientifically defensible way. As an alternative, we highlight the use of formulas for naming putative taxa (candidate taxa) that do not require any modification of the ICN. Publisher’s Note A first version of this text was prepared by the first eight authors and the last one, given here. The other listed co-authors in the article PDF support the content, and their actual contributions varied from only support to additions that substantially improved the content. The full details of all co-authors, with their affiliations, are included in Supplementary Table 1 after p.175 of the article for reasons of clarity and space. Slavomír Adamčík Institute of Botany, Plant Science and Biodiversity Centre, Slovak Academy of Sciences, Dúbravská cesta 9, 845 23 Bratislava, Slovakia Teuvo Ahti Finnish Museum of Natural History, P.O. Box 7, 00014 University of Helsinki, Finland M. Catherine Aime Purdue University, 915 W. State St., West Lafayette, Indiana 47907, U.S.A. A. Martyn Ainsworth Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, United Kingdom László Albert Hungarian Mycological Society, 1087 Könyves Kálmán krt. 40, Budapest, Hungary Edgardo Albertó Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico de Chascomús, Universidad Nacional de San Martin-Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina Alberto Altés García Facultad de Biología, Ciencias Ambientales y Química, Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain Dmitry Ageev SIGNATEC Ltd., 630090, Novosibirsk, Akademgorodok (Novosibirsk Scientific Center), Inzhenernaya str., 22, Russia Reinhard Agerer Ludwig-Maximilians-Universität München, Menzinger Str. 67, 80638 München, Germany Begona Aguirre-Hudson Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, United Kingdom Joe Ammirati University of Washington, Seattle, Washington 98195-1800, U.S.A. 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Moscoso, Apartado 21-9, Santo Domingo, Dominican Republic Vladimír Antonín Moravian Museum, Zeny trh 6, 659 37 Brno, Czech Republic Takayuki Aoki Genetic Resources Center, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan André Aptroot ABL Herbarium, G.v.d.Veenstraat 107, 3762 XK Soest, The Netherlands Didier Argaud 40 rue du Justemont, 57290 Fameck, France Blanca Imelda Arguello Sosa Instituto Tecnológico de Ciudad Victoria, Tecnológico Nacional de México, Ciudad Victoria, Tamaulipas, Mexico Arne Aronsen Torødveien 54, 3135 Torød, Norway Ulf Arup Biological Museum, Lund University, Box 117, 221 00 Lund, Sweden Bita Asgari Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization, Tehran, Iran Boris Assyov Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Str., 1113 Sofia, Bulgaria Violeta Atienza Facultad de Ciencias Biológicas, Universitat de València, C/Dr Moliner 50, 46100, Burjasot, Valencia, Spain Ditte Bandini Panoramastr 47, 69257 Wiesenbach, Germany João Luís Baptista-Ferreira Instituto de Biossistemas e Ciências Integrativas, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal Hans-Otto Baral Blaihofstr. 42, 72074 Tübingen, Germany Tim Baroni The State University of New York, 340 Bowers Hall, P.O. 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Bart Buyck Muséum National d’Histoire Naturelle, CP 39, ISYEB, UMR 7205 CNRS MNHN UPMC EPHE, 12 rue Buffon, 75005 Paris, France Ana Rosa Burgaz Facultad de Ciencias Biológicas, Universidad Complutense de Madrid, 28040 Madrid, Spain Vicent Calatayud Fundación CEAM, c/ Charles R. Darwin, 14, Parque Tecnológico, 46980 Paterna, Valencia, Spain Philippe Callac INRA, MycSA, CS 20032, 33882 Villenave d’Ornon, France Emanuele Campo Associazione Micologica Bresadola, Via Alessandro Volta 46, 38123 Trento, Italy Massimo Candusso Via Ottone Primo 90, 17021, Alassio, Savona, Italy Brigitte Capoen Queffioec, rue de Saint Gonval, 22710 Penvenan, France Joaquim Carbó Roser, 60, 17257 Torroella de Montgrí, Girona, Spain Matteo Carbone Via Don Luigi Sturzo 173 16148 Genova, Italy Rafael F. Castañeda-Ruiz Instituto de Investigaciones Fundamentales en Agricultura, Tropical ‘Alejandro de Humboldt’, OSDE, Grupo Agrícola, Calle 1 Esq. 2, Santiago de Las Vegas, C. Habana 17200, Cuba Michael A. 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Box 65, 00014 Helsinki, Finland Maria Martha Dios Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Catamarca, Av Belgrano 300, 4700 San Fernando del Valle de Catamarca, Argentina Pradeep Kumar Divakar Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain Clovis Douanla-Meli Julius Kühn-Institut, Federal Research Centre for Cultivated Plants, Institute for National and International Plant Health, Messeweg 11-12, 38104 Braunschweig, Germany Brian Douglas Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, United Kingdom Elisandro Ricardo Drechsler-Santos Universidade Federal de Santa Catarina, Campus Universitário Reitor João David Ferreira Lima, Trindade, Florianópolis, Santa Catarina CEP 88040-900, Brazil Paul S. Dyer School of Life Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom Ursula Eberhardt Abt. 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Rebriev Southern Scientific Center, Russian Academy of Sciences, 41 Chehova str., Rostov-on-Don, 344006, Russia Juan de Dios Reyes García Paseo Virgen de Linarejos 6 2 D, Linares, Jaen, Spain Miguel Ángel Ribes Ripoll Avda. Pablo Neruda 120 F, 2°D, 28018 Madrid, Spain Franck Richard CEFE UMR5175, CNRS, Université de Montpellier, Université Paul-Valéry Montpellier, EPHE, INSERM, 1919 Route de Mende, 34293 Montpellier Cédex 5, France Mike J. Richardson Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh, EH3 5LR, United Kingdom Víctor J. Rico Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain Gerardo Lucio Robledo Instituto Multidisciplinario de Biología Vegetal, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Córdoba, Casilla de Correo 495, 5000 Córdoba, Argentina Flavia Rodrigues Barbosa Universidade Federal de Mato Grosso, Av. 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Box 50007, 104 05 Stockholm, Sweden Øyvind Weholt Nord University, Nesna, 8700 Nesna, Norway Martin Westberg Museum of Evolution, Uppsala University, Norbyvägen 16, 75236 Uppsala, Sweden Eugene Yurchenko Polessky State University, Dnyaprouskai flatylii str. 23, 225710, Pinsk, Belarus Petr Zehnálek Faculty of Science, Charles University, Benátská 2, 128 01 Praha 2, Czech Republic Huang Zhang Kunming University of Science & Technology, Kunming, China Mikhail P. Zhurbenko Komarov Botanical Institute of the Russian Academy of Sciences, 2 Prof. Popov Street, St. Petersburg, 197376, Russia The following institutions are also supporting the present text (institutional support means that committees from the mentioned) Asociación Micológica Carlos Spegazzini (Argentina) Austrian Mycological Society (Austria) Croatian Mycological Society (Croatia) Committee of the Czech Scientific Society for Mycology (Czech Republic) The Netherlands Mycological Society (The Netherlands) Sociedad Española de Liquenología (Portugal/Spain) Iberian Mycological Society (which is under constitution, Portugal/Spain) Federación de Asociaciones Micológicas Andaluzas (FAMA) (Spain) Asociación Botánica y Micológica de Jaén (Spain) Asociación Micológica Hispalense Muscaria (Spain) Societat Micològica Valenciana (Spain)

High-throughput sequencing technologies using amplicon approaches have changed the way that studies investigating fungal distribution are undertaken. These powerful and time-efficient technologies have the potential for the first time to accurately map fungal distributions across landscapes or changes in diversity across ecological or biological gradients of interest. There is no requirement for a fungus to form a fruiting body to be detected, and both culturable and nonculturable organisms can be detected. Here we use high-throughput amplicon sequencing from bulk DNA extracts to test the impact that biases associated with culture-based methods had on an earlier study that compared the influence of site and host on fungal diversity in Nothofagaceae forests in New Zealand. Both detection methods sampled tissue from the same set of symptomless, living leaves. We found that both the culturing and high-throughput approaches show that host is a stronger driver of fungal community structure than site, but that both methods have some taxonomic biases. We also found that the individual trees selected for high-throughput sampling can impact the alpha-diversity detected and through this could potentially affect subsequent analyses based on a comparison of this diversity.

Deterministic and stochastic factors interact to generate biogeographic patterns in fungal communities, challenging efforts to predict which fungal assemblages will develop in association with introduced plants. The coastal dune grass Ammophila arenaria has been moved around the world. We sampled A. arenaria roots in its native range in the United Kingdom, and in Australia and New Zealand where it is invasive. The co-occurring native dune grass Leymus arenarius was also sampled in the United Kingdom, and the native dune grass Spinifex sericeus was sampled in Australia and New Zealand. A. arenaria associates with root fungal communities in its invasive range that are richer than those in the United Kingdom, and richer than those in co-occurring native grasses, demonstrating that exotic plants are not necessarily depauperate in fungal associates. Most of the dominant OTUs associating with A. arenaria were shared among all three geographic regions. However, community composition varied among regions, with differences in temperature, nitrogen and pH correlating with community change. Within regions, community composition varied among dunes, although the majority of sequences obtained were in OTUs that were detected in multiple dunes. Host plant species identity influenced fungal community composition, although the majority of the data were in OTUs that were shared between hosts. While the roots sampled appeared healthy, many of the dominant fungi recovered are potentially pathogenic. This study demonstrates that many fungi are widely dispersed, and that introduced plants are likely to associate with functionally diverse fungal communities that include species from their native ranges. However root-associated fungal community composition is variable, even at regional and local scales in a common plant in a common environment.

Fungal taxonomy and classification, and fungal identification tools, are increasingly based on DNA sequencing technologies. In contrast, many historical records of fungi are based on morphologically identified specimens. Scientific collections of specimens or living cultures provide a resource to enable these early records to be genetically validated using modern techniques. This project uses a set of cultures deposited prior to 2008 in the International Collection of Microorganisms from Plants (ICMP) culture collection as Phoma, a genus of high biosecurity importance that is notoriously difficult to identify accurately using morphological characters. Of the 265 cultures sequenced, 23% had been misidentified. These misidentifications mean that six species previously thought to be present in New Zealand probably do not occur there. Fifty specimens had not previously been identified to species level; amongst these were eight species newly reported from New Zealand. Genetic validation projects such as this, using existing scientific collections, are essential for maintaining a robust global biosecurity system.

Lauriomyces is an anamorphic genus comprising nine species, found growing on terrestrial leaf litter and wood in tropical habitats. The genus is characterized by solitary or synnematous, pigmented conidiophores bearing acropetal chains of unicellular, hyaline conidia.Amultigene (SSU, LSU & 5.8S) analysis of Lauriomyces strains reveal three cryptic new species, which are described, illustrated, and published here: L. acerosus, L. basitruncatus, and L. glumateus spp. nov. Lauriomyces glumateus is characterized by narrowly oval conidia while conidia of L. acerosus are cylindrical with acute ends and those of L. basitruncatus are cylindrical with truncate base. The nine Lauriomyces species sampled form a monophyletic clade in the Leotiomycetes, with high molecular support and all with a morphology typical for the genus. The new combination Dematioscypha catenata is made for Haplographium catenatum in compliance with the one name protocol.

Novel species of fungi described in this study include those from various countries as follows: Antarctica, Cladosporium arenosum from marine sediment sand. Argentina, Kosmimatamyces alatophylus (incl. Kosmimatamyces gen. nov.) from soil. Australia, Aspergillus banksianus, Aspergillus kumbius, Aspergillus luteorubrus, Aspergillus malvicolor and Aspergillus nanangensis from soil, Erysiphe medicaginis from leaves of Medicago polymorpha, Hymenotorrendiella communis on leaf litter of Eucalyptus bicostata, Lactifluus albopicri and Lactifluus austropiperatus on soil, Macalpinomyces collinsiae on Eriachne benthamii, Marasmius vagus on soil, Microdochium dawsoniorum from leaves of Sporobolus natalensis, Neopestalotiopsis nebuloides from leaves of Sporobolus elongatus, Pestalotiopsis etonensis from leaves of Sporobolus jacquemontii, Phytophthora personensis from soil associated with dying Grevillea mccutcheonii. Brazil, Aspergillus oxumiae from soil, Calvatia baixaverdensis on soil, Geastrum calycicoriaceum on leaf litter, Greeneria kielmeyerae on leaf spots of Kielmeyera coriacea. Chile, Phytophthora aysenensis on collar rot and stem of Aristotelia chilensis. Croatia, Mollisia gibbospora on fallen branch of Fagus sylvatica. Czech Republic, Neosetophoma hnaniceana from Buxus sempervirens. Ecuador, Exophiala frigidotolerans from soil. Estonia, Elaphomyces bucholtzii in soil. France, Venturia paralias from leaves of Euphorbia paralias. India, Cortinarius balteatoindicus and Cortinarius ulkhagarhiensis on leaf litter. Indonesia, Hymenotorrendiella indonesiana on Eucalyptus urophylla leaf litter. Italy, Penicillium taurinense from indoor chestnut mill. Malaysia, Hemileucoglossum kelabitense on soil, Satchmopsis pini on dead needles of Pinus tecunumanii. Poland, Lecanicillium praecognitum on insects' frass. Portugal, Neodevriesia aestuarina from saline water. Republic of Korea, Gongronella namwonensis from freshwater. Russia, Candida pellucida from Exomias pellucidus, Heterocephalacria septentrionalis as endophyte from Cladonia rangiferina, Vishniacozyma phoenicis from dates fruit, Volvariella paludosa from swamp. Slovenia, Mallocybe crassivelata on soil. South Africa, Beltraniella podocarpi, Hamatocanthoscypha podocarpi, Coleophoma podocarpi and Nothoseiridium podocarpi (incl. Nothoseiridium gen. nov.)from leaves of Podocarpus latifolius, Gyrothrix encephalarti from leaves of Encephalartos sp., Paraphyton cutaneum from skin of human patient, Phacidiella alsophilae from leaves of Alsophila capensis, and Satchmopsis metrosideri on leaf litter of Metrosideros excelsa. Spain, Cladophialophora cabanerensis from soil, Cortinarius paezii on soil, Cylindrium magnoliae from leaves of Magnolia grandiflora, Trichophoma cylindrospora (incl. Trichophoma gen. nov.) from plant debris, Tuber alcaracense in calcareus soil, Tuber buendiae in calcareus soil. Thailand, Annulohypoxylon spougei on corticated wood, Poaceascoma filiforme from leaves of unknown Poaceae. UK, Dendrostoma luteum on branch lesions of Castanea sativa, Ypsilina buttingtonensis from heartwood of Quercus sp. Ukraine, Myrmecridium phragmiticola from leaves of Phragmites australis. USA, Absidia pararepens from air, Juncomyces californiensis (incl. Juncomyces gen. nov.) from leaves of Juncus effusus, Montagnula cylindrospora from a human skin sample, Muriphila oklahomaensis (incl. Muriphila gen. nov.)on outside wall of alcohol distillery, Neofabraea eucalyptorum from leaves of Eucalyptus macrandra, Diabolocovidia claustri (incl. Diabolocovidia gen. nov.)from leaves of Serenoa repens, Paecilomyces penicilliformis from air, Pseudopezicula betulae from leaves of leaf spots of Populus tremuloides. Vietnam, Diaporthe durionigena on branches of Durio zibethinus and Roridomyces pseudoirritans on rotten wood. Morphological and culture characteristics are supported by DNA barcodes.

Fungi in the class Leotiomycetes are ecologically diverse, including mycorrhizas, endophytes of roots and leaves, plant pathogens, aquatic and aero-aquatic hyphomycetes, mammalian pathogens, and saprobes. These fungi are commonly detected in cultures from diseased tissue and from environmental DNA extracts. The identification of specimens from such character-poor samples increasingly relies on DNA sequencing. However, the current classification of Leotiomycetes is still largely based on morphologically defined taxa, especially at higher taxonomic levels. Consequently, the formal Leotiomycetes classification is frequently poorly congruent with the relationships suggested by DNA sequencing studies. Previous class-wide phylogenies of Leotiomycetes have been based on ribosomal DNA markers, with most of the published multi-gene studies being focussed on particular genera or families. In this paper we collate data available from specimens representing both sexual and asexual morphs from across the genetic breadth of the class, with a focus on generic type species, to present a phylogeny based on up to 15 concatenated genes across 279 specimens. Included in the dataset are genes that were extracted from 72 of the genomes available for the class, including 10 new genomes released with this study. To test the statistical support for the deepest branches in the phylogeny, an additional phylogeny based on 3156 genes from 51 selected genomes is also presented. To fill some of the taxonomic gaps in the 15-gene phylogeny, we further present an ITS gene tree, particularly targeting ex-type specimens of generic type species. A small number of novel taxa are proposed: Marthamycetales ord. nov., and Drepanopezizaceae and Mniaeciaceae fams. nov. The formal taxonomic changes are limited in part because of the ad hoc nature of taxon and specimen selection, based purely on the availability of data. The phylogeny constitutes a framework for enabling future taxonomically targeted studies using deliberate specimen selection. Such studies will ideally include designation of epitypes for the type species of those genera for which DNA is not able to be extracted from the original type specimen, and consideration of morphological characters whenever genetically defined clades are recognized as formal taxa within a classification. Electronic supplementary material The online version of this article (10.1186/s43008-019-0002-x) contains supplementary material, which is available to authorized users.

The Landcare Research collections of biological specimens and their associated databases provide an essential resource for local and international researchers, administrators of New Zealand’s plant-disease-related biosecurity system, border control agencies and non-professional citizen scientists. This article focuses on data provided for New Zealand’s non-lichenised fungi and plant pathogenic bacteria, through the NZFungi nomenclatural and bibliographic database and the associated specimen databases for the PDD fungarium and International Collection of Microorganisms from Plants culture collection. A brief history of the development of the databases is provided, along with the resources used to deliver the data to users. The data is managed through an enterprise data management system rather than an off-the-shelf product, using international standards to allow exchange of data with other providers such as GBIF, Index Fungorum, StrainInfo and Species 2000.

Dacrymycetes, sister to Agaricomycetes, is a noteworthy lineage for studying the evolution of wooddecaying basidiomycetes; however, its species diversity and phylogeny are largely unknown. Species of Dacrymycetes previously used in molecular phylogenetic analyses are mainly derived from the Northern Hemisphere, thus insufficient knowledge exists concerning the Southern Hemisphere lineages. In this study, we investigated the species diversity of Dacrymycetes in New Zealand. We found 11 previously described species, and eight new species which were described here: Calocera pedicellata, Dacrymyces longistipitatus, D. pachysporus, D. stenosporus, D. parastenosporus, D. cylindricus, D. citrinus, and D. cyrtosporus. These eight newly described species and seven of the known ones, namely, Calocera fusca, C. cf. guepinioides, C. lutea, Dacrymyces flabelliformis, D. intermedius, D. subantarcticensis, and Heterotextus miltinus, have rarely or never been recorded from the Northern Hemisphere. In a molecular-based phylogeny, these New Zealand strains were scattered throughout the Dacrymycetaceae clade. Sequences obtained from specimens morphologically matching C. guepinioides were separated into three distant clades. Because no obvious morphological differences could be discerned between the specimens in each clade and no sequence exists from the type specimen, a C. guepinioides s.str. clade could not be determined. This survey of dacrymycetous species in the Southern Hemisphere has increased taxon sampling for phylogenetic analyses that can serve as a basis for the construction of a stable classification of Dacrymycetes.

This is the first comprehensive survey of the species diversity of Trichoderma for a region within the temperate Southern Hemisphere. New Zealand makes an ideal target for such a survey because of the extensive historical collections of this genus from both native and human-modified ecosystems. From the 320 Trichoderma strains sequenced for the translation elongation factor-1α (tef1α) gene, in addition to the names associated with voucher specimens at the New Zealand Fungarium (PDD, Landcare Research), we recognise 71 Trichoderma species as present in New Zealand. Thirty-two species are reported for the first time from New Zealand and 14 of these appear to represent undescribed taxa. The New Zealand species are positioned across most Trichoderma clades, with terminal lineages related to T. viride, T. koningii and T. harzianum well represented. Of the 14 undescribed species, Trichoderma sp. “atroviride B”, a sister species to T. atroviride s.s., was the most commonly recovered species. Records of several species known only from fungarium specimens could not be confirmed by DNA analysis. Populations of Trichoderma in New Zealand are likely to represent a mixture of ancient indigenous lineages, more recent natural introductions, and species introduced as a result of human-mediated dispersal. Twenty-three Trichoderma species have been reported only from New Zealand or other Southern Hemisphere locations. The diversity of Trichoderma species in New Zealand, their phylogenetic relationships, distribution, ecology, and possible origins are discussed in this paper.

Ectomycorrhizal fungi are increasingly recognized as invasive species. Invasive ectomycorrhizal fungi can be toxic to humans, may compete with native, edible or otherwise valuable fungi, facilitate the co-invasion of trees, and cause major changes in soil ecosystems, but also have positive effects, enabling plantation forestry and, in some cases, becoming a valuable food source. Land-managers are interested in controlling and removing invasive fungi, but there are few available strategies for management and none are based on robust scientific evidence. Nonetheless, despite the absence of relevant experiments, we suggest that knowledge of the fundamental ecology of fungi can help guide strategies. We review the literature and suggest potential strategies for prevention, for slowing the spread of invasive fungi, for eradication, and for long-term management. In many cases the most appropriate strategy will be species and context (including country) specific. In order to effectively address the problems posed by invasive ectomycorrhizal fungi, land managers and scientists need to work together to develop and robustly test control and management strategies.

Global trade and the movement of people accelerate biological invasions by spreading species worldwide. Biosecurity measures seek to allow trade and passenger movements while preventing incursions that could lead to the establishment of unwanted pests, pathogens, and weeds. However, few data exist to evaluate whether changes in trade volumes, passenger arrivals, and biosecurity measures have altered rates of establishment of nonnative species over time. This is particularly true for pathogens, which pose significant risks to animal and plant health and are consequently a major focus of biosecurity efforts but are difficult to detect. Here, we use a database of all known plant pathogen associations recorded in New Zealand to estimate the rate at which new fungal pathogens arrived and established on 131 economically important plant species over the last 133 years. We show that the annual arrival rate of new fungal pathogens increased from 1880 to about 1980 in parallel with increasing import trade volume but subsequently stabilised despite continued rapid growth in import trade and recent rapid increases in international passenger arrivals. Nevertheless, while pathogen arrival rates for crop and pasture species have declined in recent decades, arrival rates have increased for forestry and fruit tree species. These contrasting trends between production sectors reflect differences in biosecurity effort and suggest that targeted biosecurity can slow pathogen arrival and establishment despite increasing trade and international movement of people., Author summary When people and goods move around the world, they spread nonnative species—including pathogens that can cause disease—leading to huge economic impacts. Many countries try to limit pathogen arrivals by screening goods and people before they enter. But are these biosecurity measures effective? Pathogens are hard to detect, and we rarely have data on key metrics such as the volume of goods imported, number of people arriving, and new nonnative pathogens establishing over time. Our study uses a database of all known New Zealand plant pathogen records to estimate how many fungal pathogens arrived and established on 131 economically important plant species each year over the last 133 years. Pathogen arrivals increased exponentially for 100 years starting in 1880, paralleling an increasing volume of goods imported. Since about 1980, the rate of new pathogen arrivals has stopped increasing, despite imports and the arrival of people continuing to accelerate. However, these recent trends differ among plants from different economic sectors. Pathogen arrivals on crop and forage plants have declined but continue to increase on forestry and fruit trees. This trend reflects differences in the biosecurity measures imposed, suggesting that targeted biosecurity can reduce the establishment of nonnative pathogens even while global trade and travel continue to increase.

Arbuscular mycorrhizal fungi (AMF) are components of coastal dune ecosystems around the globe where they provide a range of benefits to plants. The diversity and structure of AMF communities within these ecosystems, however, are poorly known. This study presents the first report of an AMF community in a New Zealand dune. Root samples were collected from the grass Spinifex sericeus R. Br., which dominates dunes of the North Island of New Zealand, along a 90 m transect at Anawhata Beach. Spores were also collected from here. The AMF community within the roots was surveyed using 454 sequencing of the SSU gene region. Spores were identified by their morphology, and sequenced. The 22 operational taxonomic units recognised following the high throughput sequencing formed a phylogenetically diverse community, including at least 7 genera across the Glomerales and Diversisporales, with an additional genus detected by the spore investigation. Some root and spore derived sequences generated close BLAST matches to AMF from distant countries while others represent previously unknown biodiversity. Spore morphology also suggests undescribed AMF are present. High diversity was found within the genera Rhizophagus and Racocetra, and within a clade with no matches to a described genus. Spatial heterogeneity was observed, with taxonomic composition changing over distances of only 30 m.

The asexual form of the grape powdery mildew Erysiphe necator has been present in New Zealand for over 100 years In 2013 the sexual stage was reported for the first time in vineyards in Hawkes Bay associated with increased disease issues This paper presents an initial genetic analysis of New Zealand populations compared to known populations overseas and tentatively identifies two haplotypes new to New Zealand Initial analysis of matingtype ratios indicates only one of these haplotypes is sexually reproducing A better understanding of the fundamental character of the New Zealand populations of Erysiphe necator is needed before an accurate assessment can be made of the practical impact that the introduction of the sexual stage has had on disease incidence and control

In advancing to one scientific name for fungi, this paper treats genera competing for use in the phylogenetically defined class Leotiomycetes except for genera of Erysiphales. Two groups traditionally included in the so-called "inoperculate discomycetes" have been excluded from this class and are also not included here, specifically Geoglossomycetes and Orbiliomycetes. A recommendation is made about the generic name to use in cases in which two or more generic names are synonyms or taxonomically congruent along with the rationale for the recommendation. In some cases the recommended generic name does not have priority or is based on an asexual type species, thus needs to be protected and ultimately approved according to Art. 57.2 of the International Code of Nomenclature for algae, fungi and plants (ICN). A table is presented listing all competing generic names and their type species noting the recommended generic name. New combinations are introduced for the oldest epithet in the recommended genus including Ascocalyx berenice, Ascoconidium purpurascens, Ascocoryne albida, A. trichophora, Blumeriella filipendulae, B. ceanothi, Botrytis arachidis, B. fritillariae-pallidoflori, Calloria urticae, Calycellina aspera, Dematioscypha delicata, Dermea abietinum, D. boycei, D. stellata, Diplocarpon alpestre, D. fragariae, Godroniopsis peckii, Grovesinia moricola, Heterosphaera sublineolata, Hyphodiscus brachyconium, H. brevicollaris, H. luxurians, Leptotrochila campanulae, Monilinia polystroma, Neofabraea actinidae, N. citricarpa, N. vagabunda, Oculimacula aestiva, O. anguioides, Pezicula brunnea, P. californiae, P. cornina, P. diversispora, P. ericae, P. melanogena, P. querciphila, P. radicicola, P. rhizophila, Phialocephala piceae, Pilidium lythri, Rhabdocline laricis, Streptotinia streptothrix, Symphyosirinia parasitica, S. rosea, Unguiculariopsis caespitosa, and Vibrissea laxa.

Cabarroi Hernandez M., Johnston P. R. & Minter D. W.: Rhytismataceae (Ascomycota) in Cuba. — Willdenowia 44: 65–75. 14 March 2014. — Version of record published online ahead of inclusion in April 2014 issue; ISSN 1868-6397; © 2014 BGBM Berlin-Dahlem. DOI: http://dx.doi.org/10.3372/wi.44.44110 Knowledge of Rhytismataceae (Ascomycota) in Cuba is inadequate; many specimens have been collected and identified by foreign specialists and many types are mostly preserved in reference collections of other countries. Following extensive field and herbarium studies, nine species of Rhytismataceae are reported, discussed and illustrated from Cuba, of which three: Coccomyces leptosporus, C. tesselatus and Lophodermium mangiferae are new for this country. Six other species: Coccomyces clusiae, C. limitatus, Lophodermium australe, L. platyplacum, Marthamyces quadrifidus and Terriera minor, which had been reported previously, are now confirmed. New host records for some species are also presented. Fruit bodies an...

The behaviour and risk associated with wood-inhabiting saprobic fungi introduced through trade is poorly understood. We used the cosmopolitan species Schizophyllum commune, considered a biosecurity risk in New Zealand, as a case study to test the potential for naturalization of alien strains/populations of wood-inhabiting saprobic fungi to occur. Phylogenetic analysis of the intergenic spacer 1 region was undertaken to determine the origin of New Zealand samples and one Cook Islands sample from the three known globally geographically distinct clades: North/Central America (NAM); South America (SAM); European/Asia/Australia (EAS). All New Zealand S. commune sequences fall within the EAS clade in two distinct groups with four haplotypes (Ia, Ib, IIb and IIa), with no evidence of naturalization of individuals from the NAM and SAM clades. The diversity of the haplotypes can be explained by two natural dispersal events in pre-human times. Ensuring timber is sufficiently treated will prevent alien populations p...

Bryoclaviculus campylopi, a tiny, beautiful inoperculate discomycete fungus found only in association with the moss Campylopus acuminatus, is described as a new genus and species from New Zealand. Phylogenetically it has a sister relationship with the northern hemisphere moss-associated species Bryoglossum gracile. It is distinguished macroscopically from Bryoglossum by its cup-shaped fruit body and microscopically by features of the asci and paraphyses.

Species- and population-specific differences in fungicide resistance and aggressiveness within Botrytis makes basic data on genetic diversity important for understanding disease caused by this fungus. Genetic diversity of Botrytis was surveyed between 2008 and 2012 from grapes from five New Zealand wine-growing regions. A total of 1226 isolates were gathered from symptomless flower buds at the start of the growing season and 1331 isolates from diseased fruit at harvest. Two species were found, B. cinerea and B. pseudocinerea. Botrytis pseudocinerea was common in both Auckland vineyards sampled, and infrequent elsewhere. However, even in Auckland, it was rarely isolated from diseased fruit. The presence of the Boty and Flipper transposons was assessed. Isolates with all four transposon states (Boty only, Flipper only, both Boty and Flipper, no transposons) were found for both species. Both vineyards in the Auckland region had high numbers of Flipper-only isolates at flowering; both vineyards from the Waipara region had high numbers of Boty-only isolates at flowering. Most isolates from diseased fruit at harvest contained both transposons. These observations suggest that B. pseudocinerea, and isolates with one or both of the transposons missing, may be less aggressive than B. cinerea, or than isolates with both transposons present. Two clades were resolved within B. pseudocinerea, only one of which has been reported from European vineyards. Phylogenetic diversity within B. cinerea in New Zealand was similar to that known from Europe, including isolates that appear to match Botrytis ‘Group S’. The taxonomic implications of this genetic diversity are discussed.

With the change to one scientific name for fungal species, numerous papers have been published with recommendations for use or protection of competing generic names in major groups of ascomycetes. Although genera in each group of fungi were carefully considered, some competing generic names were overlooked. This paper makes recommendations for additional competing genera not considered in previous papers. Chairs of relevant Working Groups of the ICTF were consulted in the development of these recommendations. A number of generic names need protection, specifically Amarenographium over Amarenomyces, Amniculicola over Anguillospora, Balansia over Ephelis, Claviceps over Sphacelia, Drepanopeziza over Gloeosporidiella and Gloeosporium, Golovinomyces over Euoidium, Holwaya over Crinium, Hypocrella over Aschersonia, Labridella over Griphosphaerioma, Metacapnodium over Antennularia, and Neonectria over Cylindrocarpon and Heliscus. The following new combinations are made: Amniculicola longissima, Atichia maunauluana, Diaporthe columnaris, D. liquidambaris, D. longiparaphysata, D. palmicola, D. tersa, Elsinoe bucidae, E. caricae, E. choisyae, E. paeoniae, E. psidii, E. zorniae, Eupelte shoemakeri, Godronia myrtilli, G. raduloides, Sarcinella mirabilis, S. pulchra, Schizothyrium jamaicense, and Trichothallus niger. Finally, one new species name, Diaporthe azadirachte, is introduced to validate an earlier name, and the conservation of Discula with a new type, D. destructiva, is recommended.

Novel associations between plants and pathogens can have serious impacts on managed and natural ecosystems world-wide. The introduction of alien plants increases the potential for biogeographically novel plant-pathogen associations to arise when pathogens are transmitted from native to alien plant species and vice versa. We quantified biogeographically novel associations recorded in New Zealand over the last 150 yr between plant pathogens (fungi, oomycetes and plasmodiophorids) and vascular plants. We examined the extent to which taxonomic similarity, pathogen traits, contact opportunity and sampling effort could explain the number of novel associates for host and pathogen species. Novel associations were common; approximately one-third of surveyed plants and pathogens were recorded with at least one biogeographically novel associate. Native plants had more alien pathogens than vice versa. Taxonomic similarity between the native and alien flora and the total number of recorded associations (a measure of sampling effort) best explained the number of novel associates among species. The frequency of novel associations and the importance of sampling effort as an explanatory variable emphasize the need for effective monitoring and risk assessment tools to mitigate the potential environmental and economic impact of novel pathogen associations.

Se evaluaron seis regiones de ADN como posibles códigos de barras de ADN para Hongos, el segundo reino más grande de vida eucariota, por un consorcio multinacional y de laboratorios múltiples. La región de la mitocondria se utilizó la subunidad 1 de la citocromo c oxidasa como código de barras animal excluido como un marcador potencial, porque es difícil de amplificar en hongos, a menudo incluye intrones grandes y puede ser insuficientemente variable. Tres subunidades del cistrón de ARN ribosómico nuclear fueron en comparación con las regiones de tres genes de codificación proteica representativos (la subunidad más grande de la ARN polimerasa II, la segunda más grande subunidad de la ARN polimerasa II y mantenimiento de minicromosomas proteína). Aunque las regiones de genes que codifican proteínas a menudo tenían un porcentaje más alto de identificación correcta en comparación con ribosomal marcadores, baja amplificación por PCR y éxito de secuenciación eliminados ellos como candidatos para un código de barras universal para hongos. Entre la regiones del cistrón ribosómico, el espaciador transcrito interno (ITS) tiene la mayor probabilidad de identificación exitosa para la gama más amplia de hongos, con la brecha de código de barras más claramente definida entre la variación inter e intraespecífica. El nuclear subunidad ribosómica grande, un marcador filogenético popular en ciertos grupos, tuvieron una resolución de especies superior en algunos grupos taxonómicos, como los primeros linajes divergentes y las levaduras ascomicetas, pero por lo demás era ligeramente inferior al ITS. El ribosomal nuclear La subunidad pequeña tiene una resolución pobre a nivel de especie en los hongos. SU será propuesto formalmente para su adopción como el código de barras fúngico principal marcador al Consorcio para el Código de Barras de la Vida, con la posibilidad de que se desarrollen códigos de barras suplementarios para grupos taxonómicos estrechamente circunscritos., 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 large introns, and can be insufficiently variable. Three subunits from the nuclear ribosomal RNA cistron were compared together with regions of three representative proteincoding genes (largest subunit of RNA polymerase II, second largest subunit of RNA polymerase II, and minichromosome maintenance protein). Although the protein-coding gene regions often had a higher percent of correct identification compared with ribosomal markers, low PCR amplification and sequencing success eliminated them as candidates for a universal fungal barcode. Among the regions of the ribosomal cistron, the internal transcribed spacer (ITS) region has the highest probability of successful identification for the broadest range of fungi, with the most clearly defined barcode gap between inter- and intraspecific variation. The nuclear ribosomal large subunit, a popular phylogenetic marker in certain groups, had superior species resolution in some taxonomic groups, such as the early diverging lineages and the ascomycete yeasts, but was otherwise slightly inferior to the ITS. The nuclear ribosomal small subunit has poor species-level resolution in fungi. ITS will be formally proposed for adoption as the primary fungal barcode marker to the Consortium for the Barcode of Life, with the possibility that supplementary barcodes may be developed for particular narrowly circumscribed taxonomic groups.

A review is provided of the current state of understanding of Colletotrichum systematics, focusing on species-level data and the major clades. The taxonomic placement of the genus is discussed, and the evolution of our approach to species concepts and anamorph-teleomorph relationships is described. The application of multilocus technologies to phylogenetic analysis of Colletotrichum is reviewed, and selection of potential genes/loci for barcoding purposes is discussed. Host specificity and its relation to speciation and taxonomy is briefly addressed. A short review is presented of the current status of classification of the species clusters that are currently without comprehensive multilocus analyses, emphasising the orbiculare and destructivum aggregates. The future for Colletotrichum biology will be reliant on consensus classification and robust identification tools. In support of these goals, a Subcommission on Colletotrichum has been formed under the auspices of the International Commission on Taxonomy of Fungi, which will administer a carefully curated barcode database for sequence-based identification of species within the BioloMICS web environment.

Rhytismatales (Leotiomycetes, Pezizomycotina, Ascomycota) are an order of mostly plant-associated ascomycetes with a global distribution. Well known taxa include the Rhytisma tar spots on Acer spp. and several needle-cast pathogens in genera Lophodermium and Meloderma. Critical studies are lacking at all taxonomic ranks from order to species, and in particular the genus taxonomy in the order has been criticized for being unnatural. We used nuclear LSU and mitochondrial SSU sequences in Bayesian phylogenetic analyses to define a core clade of Rhytismatales sensu stricto. Some of the genera traditionally placed within the Rhytismatales, Ascodichaena, Marthamyces, Mellitiosporium, Potebniamyces, Propolis and Pseudophacidium, are shown to be phylogenetically distinct, all related to various other taxa at present placed in the polyphyletic Helotiales. Within the core clade only Cudonia, Spathularia and Terriera are supported as monophyletic. The large genera Coccomyces, Hypoderma and Lophodermium all are polyphyletic as are a few smaller genera. The traditionally used characters of ascoma and spore shape are shown to be unreliable for the delimitation of monophyletic genera but in some cases can be useful when combined with other characters. In this study we provide 72 new nrLSU and 64 new mtSSU sequences. Together with publicly available sequences data for 103 specimens representing 91 species of Rhytismatales are now available. Despite this taxon sampling intensity is still too low to propose an alternative generic taxonomy.

The diversity and distribution of fungal endophytes in the leaves of four podocarps (Dacrydium cupressinum, Prumnopitys ferruginea, Dacrycarpus dacrydioides, and Podocarpus totara, all Podocarpaceae) and an angiosperm (Kunzea ericoides, Myrtaceae) occurring in close stands were studied. The effects of host species, locality, and season on endophyte assemblages were investigated. Host species was the major factor shaping endophyte assemblages. The spatial separation of sites and seasonal differences played significant but lesser roles. The mycobiota of each host species included both generalist and largely host-specialised fungi. The host-specialists were often observed at low frequencies on some of the other hosts. There was no clear evidence for family-level specialisation across the Podocarpaceae. Of the 17 species found at similar frequencies on several of the podocarp species, 15 were found also on Kunzea. Many of the endophytes isolated appear to represent species of fungi not previously recognised from New Zealand.

We present a 6-gene, 420-species maximum-likelihood phylogeny of Ascomycota, the largest phylum of Fungi. This analysis is the most taxonomically complete to date with species sampled from all 15 currently circumscribed classes. A number of superclass-level nodes that have previously evaded resolution and were unnamed in classifications of the Fungi are resolved for the first time. Based on the 6-gene phylogeny we conducted a phylogenetic informativeness analysis of all 6 genes and a series of ancestral character state reconstructions that focused on morphology of sporocarps, ascus dehiscence, and evolution of nutritional modes and ecologies. A gene-by-gene assessment of phylogenetic informativeness yielded higher levels of informativeness for protein genes (RPB1, RPB2, and TEF1) as compared with the ribosomal genes, which have been the standard bearer in fungal systematics. Our reconstruction of sporocarp characters is consistent with 2 origins for multicellular sexual reproductive structures in Ascomycota, once in the common ancestor of Pezizomycotina and once in the common ancestor of Neolectomycetes. This first report of dual origins of ascomycete sporocarps highlights the complicated nature of assessing homology of morphological traits across Fungi. Furthermore, ancestral reconstruction supports an open sporocarp with an exposed hymenium (apothecium) as the primitive morphology for Pezizomycotina with multiple derivations of the partially (perithecia) or completely enclosed (cleistothecia) sporocarps. Ascus dehiscence is most informative at the class level within Pezizomycotina with most superclass nodes reconstructed equivocally. Character-state reconstructions support a terrestrial, saprobic ecology as ancestral. In contrast to previous studies, these analyses support multiple origins of lichenization events with the loss of lichenization as less frequent and limited to terminal, closely related species.

We constructed a two-locus database, comprising partial translation elongation factor (EF-1 alpha) gene sequences and nearly full-length sequences of the nuclear ribosomal intergenic spacer region (IGS rDNA) for 850 isolates spanning the phylogenetic breadth of the Fusarium oxysporum species complex (FOSC). Of the 850 isolates typed, 101 EF-1 alpha, 203 IGS rDNA, and 256 two-locus sequence types (STs) were differentiated. Analysis of the combined dataset suggests that two-thirds of the STs might be associated with a single host plant. This analysis also revealed that the 26 STs associated with human mycoses were genetically diverse, including several which appear to be nosocomial in origin. A congruence analysis, comparing partial EF-1 alpha and IGS rDNA bootstrap consensus, identified a significant number of conflicting relationships dispersed throughout the bipartitions, suggesting that some of the IGS rDNA sequences may be non-orthologous. We also evaluated enniatin, fumonisin and moniliformin mycotoxin production in vitro within a phylogenetic framework

Species in the Botryosphaeriaceae are common plant pathogens and saprobes found on a variety of mainly woody hosts. Teleomorphs typically have hyaline, aseptate ascospores. However, some have been reported with brown ascospores and their taxonomic status is uncertain. A multi-gene approach (SSU, ITS, LSU, EF1-alpha and beta-tubulin) was used to resolve the correct phylogenetic position of the dark-spored 'Botryosphaeria' teleomorphs and related asexual species. Neodeightonia and Phaeobotryon are reinstated for species with brown ascospores that are either 1-septate (Neodeightonia) or 2-septate (Phaeobotryon). Phaeobotryosphaeria is reinstated for species with brown, aseptate ascospores that bear an apiculus at either end. The status of Sphaeropsis is clarified and shown to be the anamorph of Phaeobotryosphaeria. Two new genera, namely Barriopsis for species having brown, aseptate ascospores without apiculi and Spencermartinsia for species having brown, 1-septate ascospores with an apiculus at either end are introduced. Species of Dothiorella have brown, 1-septate ascospores and differ from Spencermartinsia in the absence of apiculi. These six genera can also be distinguished from one another based on morphological characters of their anamorphs. Although previously placed in the Botryosphaeriaceae, Dothidotthia, was shown to belong in the Pleosporales, and the new family Dothidotthiaceae is introduced to accommodate it.

Hypocreopsis amplectens is distinguished from other Hypocreopsis species by its 3–4‐spored asci and multiseptate, rough‐walled ascospores. As the asci mature it is common for one spore to abort or for adjacent spores to fuse. This fungus has been referred to as Hypocreopsis sp. and Hypocreopsis sp. ‘Nyora’ in the Australian literature. In Victoria, Australia, H. amplectens has been classified as “vulnerable” under the Victorian Flora and Fauna Guarantee Act 1988, and the Nyora Flora and Fauna Reserve was created partly because of its occurrence there. Despite intensive surveys it is still known from only three sites in Australia. In New Zealand it is known from a single collection made more than 20 years ago in Nothofagus forest at a site visited regularly by mycologists. Its status as a rare fungus makes it eligible for inclusion on national threat status lists in Australia and New Zealand.

A cleistothecial fungus, known only from the shells of giant land snails of the family Rhytidae, is described as a new genus and species within Onygenales, Harorepupu aotearoa gen. sp. nov. Known only from the sexual morph, this fungus is characterized morphologically by a membranous ascoma with no appendages and ascospores with a sparse network of ridges. Ribosomal DNA sequences place the new species within Onygenales, but comparison with the known genetic diversity within the order linked it to no existing genus or family. It is the first species of Onygenales reported from the shells of terrestrial snails. This fungus has been listed as Critically Endangered in New Zealand and has been previously referred to as ‘Trichocomaceae gen. nov.’ in those threat lists.

Phylogenetic relationships of one of the largest nonlichen-forming ascomycetous groups, the Leotiomycetes, were inferred from genes encoding three rDNA regions (SSU+LSU+5.8S rDNA). A dataset was prepared with rDNA sequences data from 108 isolates, among which we sampled 85 taxa representing four orders and 16 families in the Leotiomycetes. Equally weighted parsimony and Bayesian analyses were performed. Bootstrap proportion and Bayesian posterior probability under the GTR+gamma+iota model were estimated along the branches. Based on our results the Leotiomycetes is relatively well defined as a class and it includes the Cyttariales, Erysiphales, Helotiales, Rhytismatales and two families of uncertain position, Myxotrichaceae and Pseudeurotiaceae. The placements of the Thelebolales and Ascocorticiaceae are not examined and are accepted as tentative in the Leotiomycetes. Our results agree with previous studies to remove the Geoglossaceae, including Geoglossum, Trichoglossum and Sarcoleotia, from the Leotiomycetes. Positions of the Erysiphales and Rhytismatales in the Leotiomycetes are confirmed. The Helotiales and Myxotrichaceae are paraphyletic. Close relationships are supported strongly among the Hemiphacidiaceae, Rutstroemiaceae and Sclerotiniaceae, among Loramycetaceae, the northern hemisphere Vibrisseaceae, the Dark Septate Endophyte fungus Phialocephala fortinii and Mollisia cinerea, and between species of Bulgaria and Phadidiopycnis. Sequence data of rDNA regions are not adequate to resolve the relationships among major groups of the Leotiomycetes.

The highly divergent characters of morphology, ecology, and biology in the Helotiales make it one of the most problematic groups in traditional classification and molecular phylogeny. Sequences of three rDNA regions, SSU, LSU, and 5.8S rDNA, were generated for 50 helotialean fungi, representing 11 out of 13 families in the current classification. Data sets with different compositions were assembled, and parsimony and Bayesian analyses were performed. The phylogenetic distribution of lifestyle and ecological factors was assessed. Plant endophytism is distributed across multiple clades in the Leotiomycetes. Our results suggest that (1) the inclusion of LSU rDNA and a wider taxon sampling greatly improves resolution of the Helotiales phylogeny, however, the usefulness of rDNA in resolving the deep relationships within the Leotiomycetes is limited; (2) a new class Geoglossomycetes, including Geoglossum, Trichoglossum, and Sarcoleotia, is the basal lineage of the Leotiomyceta; (3) the Leotiomycetes, including the Helotiales, Erysiphales, Cyttariales, Rhytismatales, and Myxotrichaceae, is monophyletic; and (4) nine clades can be recognized within the Helotiales.

An annotated list is provided of 450 taxa of fungi (including oomycetes and myxomycetes) that have been recorded in New Zealand in close association with teatree, that is, species of Kunzea and Leptospermum. Nearly all records refer to fungi growing with K. ericoides (kanuka) or L. scoparium (manuka), as ectomycorrhizal mycobionts, endophytes, pathogens, or as saprobes causing decay of wood and leaves. The only records of fungi specific to another taxon are those of the mycorrhizal genus Pisolithus, which grows in association with K. ericoides var. microflora in the central North Island thermal areas. The list has been compiled from data associated with specimens held in the New Zealand Fungal Herbarium (PDD) and in Herbarium NZ‐FRI‐M, and from the literature. Comments on the distribution of individual fungi within New Zealand, or on the occurrence of fungi on other plant substrata in New Zealand, are supported by information in the New Zealand Fungi website. Communities dominated by teatree are ...

This paper discusses the role of taxonomy in understanding the epidemiology of fruit rotting diseases and in determining the biosecurity status of the fungi associated with those diseases. The taxonomy of most highly specialised fruit-rotting pathogens is well understood, but some degree of uncertainty or confusion applies to the taxonomy of many less specialised pathogens. The taxonomic lumping of morphologically similar but genetically and biologically distinct taxa often confounds our ability to understand diseases, frustrates the interpretation of research data, and can result in misinformation about biosecurity status. Such unspecialised pathogens are widespread in New Zealand, but whether they cause a problem in a specifi c orchard depends on environmental conditions, management of the orchard, and host plant susceptibility. As management practices and preferred cultivars change, so does the spectrum of these low-specifi city taxa that cause disease problems. Five examples illustrate the need for unambiguous taxonomy to facilitate more effective control and management strategies of plant pathogens. Accurate identifi cation allows a clear understand the biology of the pathogens and subsequently the epidemiology of their associated diseases.

A brief account of the fungi found in New Zealand on cabbage trees (Cordyline spp.) and New Zealand flaxes (Phormium spp.) is followed by an annotated listing of all fungi known to grow on living or dead parts of these endemic monocotyledonous plants. Records have been gleaned mainly from the New Zealand Fungal Herbarium (PDD) and its associated database, and from the literature. The fungi include parasites and saprobes. A total of 72 named species of fungi and 15 species identified only to genus, distributed within 72 genera, have been recorded on Cordyline. The corresponding figures for Phormium are 59 named species of fungi and 15 species identified only to genus, distributed within 54 genera. Thirteen species have been described from New Zealand with Cordyline as the type substratum and 17 with Phormium. Of these, 27 species are endemic and known only on Cordyline or Phormium. The three exceptions are Sphaeria tenacis (= Anthostomella tenacis) and Poria cordylines (= Protomerulius caryae), wh...

Fifteen species of Chlorociboria are reported for New Zealand, including 13 new species and one new subspecies. All occur on decorticated wood and all are associated with blue‐green staining of that wood. Some species are consistently associated with soft, rotten wood, while others are consistently associated with fallen wood that remains hard and appears more or less intact. The range of morphological variation accepted in the genus is broader than has previously been described, especially with respect to ascospore size and shape. Two of the species have filiform ascospores that coil on release from the asci. Species are distinguished on the basis of variation in ascospore size and shape, the presence or absence of either smooth‐walled or rough‐walled tomentum hyphae, and on macroscopic appearance. The validity of the generic and species concepts was tested using rDNA ITS sequences. Of species previously reported for New Zealand, only C. argentinensis is accepted.

A new rust fungus, Puccinia embergeriae sp. nov., on Embergeria grandifolia (Sonchus grandifolia) from the Chatham Islands, New Zealand, is described. It is compared with other rust fungi known on Sonchus spp. A recent upsurge of Miyagia pseudosphaeria on Sonchus spp. in New Zealand is discussed, and attributed to the possible introduction of a new pathogenic race of the rust.

A brief account of fungi associated with nikau (Rhopalostylis sapida and R. baueri var. cheesemanii), in New Zealand is followed by an annotated listing of all fungi known to grow on living or dead parts of these endemic palms. Records have been gleaned mainly from the New Zealand Fungal Collection (PDD) and its associated database, and from the literature. The fungi include only a few pathogens. Most fungi associated with Rhopalostylis are saprobes found on dead and fallen leaves, especially on the large leaf sheath. A total of 147 named species of fungi and 50 species identified only to genus, distributed within 134 genera, have been recorded. Many of the fungi are commonly found on other plant substrata within New Zealand, or elsewhere. Twenty‐four species have been described with R. sapida as the type substratum, and of these 17 are known only on R. sapida, including the corticioid, monotypic genus, Mycothele.