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A new lichen species is described from specimens growing onFraxinustrees north of Eindhoven (the Netherlands). Morphological and genetic studies suggest that the new species belongs in the genusCatillaria, and the nameCatillaria flexuosais proposed because of its flexuose apothecia. The new species is characterized by the relatively large apothecia (up to 0.9 mm diam.) and relatively thick, knobby to ±subsquamulose, greenish, thallus. Due to their similar morphological features,C. flexuosacan be easily confused withCatillaria chalybeia,C. fungoidesorC. nigroclavata, so it is therefore compared with these species. In addition,Arthonia epiphysciais reported being a very rare species in the Netherlands.

Lecanographa farinosa was considered to be a lichen inhabiting coastal rocks of the Mediterranean region and to possess psoromic and conpsoromic acids as major secondary metabolites. A revision of its type specimen from Germany proved that the species has been misunderstood. In this paper, L. farinosa is shown to have a thallus containing confluentic and 2’-O-methylmicrophyllinic acids and to have a different ecology and distribution. A revision of previous reports of L. farinosa from continental Portugal and the study of recent specimens of Lecanographa cf. farinosa from the Azores, Canary Islands, Cape Verde and continental Portugal revealed a new species described as L. atlantica. Moreover, reports of L. dialeuca from France (Brittany) and of L. subgrumulosa from the Azores are considered misidentifications of L. atlantica. This latter has thus a widespread distribution ranging from the Azores to the Atlantic coast of the European continent where it inhabits volcanic rocks near the sea. Lecanographa atlantica is characterized by a whitish to cream coloured thallus, usually rounded or oblong to shortly lirelliform and white pruinose ascomata with a widely exposed hymenial disc and thin margin, (3–)5–7-septate ascospores of (16–)18.9–23(–26) × (3–)3.4–4(–4.5) µm, and a chemistry including at least 2’-O-methylperlatolic acid but lacking confluentic and 2’-O-methylmicrophyllinic acids. Psoromic acid is sometimes present in L. atlantica but its origin is unclear. Phylogenetic analyses using nuLSU sequences place L. atlantica as sister to L. hypothallina.

A molecular phylogeny of the genus Byssoloma is inferred from mtSSU sequences using Bayesian and maximum likelihood phylogenetic analyses. Byssoloma subdiscordans is resolved as sister to B. citricola rather than to the B. leucoblepharum clade, the B. subundulatum group (species with a compact apothecial margin) is shown to be a monophyletic group, and three species belonging to this group are described as new to science from Hainan Province in China: B. brunneodiscum W. C. Wang & J. C. Wei, with dark brown apothecia, crystals in the excipulum and the presence of 2,5,7-trichloro-3-O-methylnorlichexanthone; B. rubrofuscum W. C. Wang & J. C. Wei, with red-brown apothecia, 3–6-septate ascospores and the presence of 5,7-dichloro-3-O-methylnorlichexanthone; B. melanodiscocarpum W. C. Wang & J. C. Wei, with pure black apothecia, a K+ olive-black hypothecium and the presence of thiophanic acid.

Tylocliostomum is described as a new genus and T. viridifarinosum as a new species. Two Bacidina species, B. pallidocarpa and B. violacea, are also described as new to science. They all occur in Macaronesia (Azores, Madeira).

Two new Micarea species, M. minuta and M. pseudotsugae, are described from the Netherlands based on morphological, chemical and molecular data. Micarea minuta belongs to the M. denigrata group and can be distinguished from other similar species of this group by its small apothecia, Sedifolia-grey pigment in the epihymenium, mostly 1-septate and small ascospores, 40–80 μm wide mesopycnidia, and the lack of secondary lichen metabolites detectable by thin-layer chromatography. Micarea pseudotsugae is a member of the M. prasina group and is characterized by an areolate, granular to subsquamulose thallus, the presence of methoxymicareic acid, the lack of Sedifolia-grey pigment, the presence of crystals (visible in polarized light) in the apothecia only, and one type of conidia (mesoconidia). The phylogenetic position of the newly described species was studied based on mtSSU rDNA marker analysis; M. minuta was found to be closely related to M. denigrata, M. nitschkeana and M. subnigrata, while M. pseudotsugae was found to be closely related to M. byssacea and M. laeta. Notes on secondary chemistry, ecology, distribution and phylogeny are given.

The new lichen species Lecidea phaeophysata is described from rocks close to the coast in Italy, Portugal, France and Ireland. Distinguishing features include Porpidia-type asci and simple paraphyses that are fuscous brown pigmented in their upper section. Its systematic position is discussed but is unclear as molecular data are lacking (all collections are c. 20 years old). Therefore, we chose to describe the species in a broadly-circumscribed Lecidea rather than erecting a new monotypic genus. A key to saxicolous lecideoid lichens present on Atlantic coasts in Europe is also provided.

van den Boom, P. P. G., Elix, J. A. & Giralt, M. 2020. Lichen diversity of crustose Caliciaceae and Physciaceae from Alentejo, the Azores and Madeira (Portugal) including the new Amandinea madeirensis. – Herzogia 33: 420 – 431.Examination of crustose Caliciaceae and Physciaceae from Portugal (Alentejo, Madeira and the Azores) revealed the new corticolous species, Amandinea madeirensis, characterized by 16-spored asci and small Physconia-type ascospores. The new species is compared with the other known corticolous species of Buellia s. lat. with polyspored asci and a key to these species is provided. Additional information is given for a further 49 species, of which Amandinea polyspora, Rinodina teichophila and the lichenicolous fungus Wernerella maheui are new records for Portugal. The following are new records for the regions studied: Buellia mediterranea and B. caloplacivora are new to the Azores, Buellia uberiuscula and Rinodina guzzinii are new to Madeira, while most records from Alentejo are new for the province. An additional record of the rare species Buellia indissimilis, hitherto known only from two localities (including the type) in northern Portugal, is included.

We discuss the taxonomy of three species of Bacidia occurring in insular Laurimacaronesia. Two of them, B. amylothelia (Vain.) Vain. and B. endoleucoides (Nyl.) Zahlbr., which were previously described from Angola and Madeira, respectively, are found here to belong in Bacidia s. str. (Ramalinaceae). Modern descriptions and illustrations are provided for the first time. Bacidia amylothelia is similar to B. areolata Gerasimova & A. Beck, B. campalea (Tuck.) S. Ekman & Kalb, B. fusconigrescens (Nyl.) Zahlbr., B. heteroloma (Vain.) Zahlbr., B. millegrana (Taylor) Zahlbr. and B. suffusa (Fr.) A. Schneid. and is reported here from the Canary Islands. Bacidia endoleucoides is most likely to be confused with B. absistens (Nyl.) Arnold, B. friesiana (Hepp) Körb., B. salazarensis B. de Lesd. and B. caesiovirens S. Ekman & Holien and was found to be widely distributed in the Canary Islands and Azores in addition to Madeira. The third species, Bacidia deludens S. Ekman, Tønsberg & van den Boom, is described here as new to science. Bacidia deludens is characterised by a greyish, crustose thallus with whitish soralia, pale apothecia with crystals in the hymenium and proper exciple, acicular ascospores with 3–19 septa, and the production of fumarprotocetraric acid as the consistently present major substance. It is described here from the Canary Islands and Madeira. Although conservatively treated here in Bacidia, we argue that it is likely to belong in the Malmideaceae. An identification key to all known species of Bacidia s. str. in insular Macaronesia is provided. publishedVersion

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. Harry Andersson Eichhahnweg 29a, 38108 Braunschweig, Germany Claudio Angelini Jardín Botánico Nacional Dr. Rafael Ma. 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. Box 2000, Cortland, New York 13045, U.S.A. Robert Weingart Barreto Universidade Federal de Viçosa, 36570-000, Viçosa, Minas Gerais, Brazil Henry Beker (1) Royal Holloway, University of London, United Kingdom; (2) Botanic Garden Meise, Nieuwelaan 38, 1860 Meise, Belgium Ann Bell 45 Gurney Road, Lower Hutt, New Zealand Jean-Michel Bellanger CEFE UMR5175, CNRS, Université de Montpellier, Université Paul-Valéry Montpellier, EPHE, INSERM, 1919 Route de Mende, 34293 Montpellier Cédex 5, France Francesco Bellù Naturmusem of Bolzano, CP 104, 39100, Bolzano, Italy Martin Bemmann Kleingemünderstraße 111, 69118 Heidelberg, Germany Mika Bendiksby NTNU, University Museum, Norwegian University of Science and Technology, 7491 Trondheim, Norway Egil Bendiksen Norwegian Institute for Nature Research, Gaustadalleen 21, 0349 Oslo, Norway Katriina Bendiksen Natural History Museum, University of Oslo, P.O. Box 1172 Blindern, 0318 Oslo, Norway Lajos Benedek Szent Istvan University, Hungary Anna Bérešová-Guttová Institute of Botany, Plant Science and Biodiversity Centre, Slovak Academy of Sciences, Dúbravská cesta 9, 845 23 Bratislava, Slovakia Franz Berger University of Salzburg, Salzburg, Austria Reinhard Berndt Herbaria Z+ZT, ETH Zürich, CHN D37, Universitätstr. 16, 8092 Zürich, Switzerland Annarosa Bernicchia Via A. Guidotti 39, 40134 Bologna, Italy Alona Yu. Biketova Institute of Biochemistry, BRC-HAS, 6726 Szeged, Temesvari krt. 62, 6726 Szeged, Hungary Enrico Bizio Società Veneziana di Micologia, Società Veneziana di Scienze Naturali, Fontego dei Turchi, Santa Croce 1730, 30135 Venice, Italy Curtis Bjork UBC Herbarium, Beaty Biodiversity Museum, University of British Columbia, Canada Teun Boekhout (1) Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD, Utrecht, The Netherlands; (2) Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands David Boertmann Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark Tanja Böhning AG Geobotanik Schleswig-Holstein & Hamburg, c/o University of Kiel, Olshausenstraße 75, 24098 Kiel, Germany Florent Boittin Ascomycete.org, 36 rue de la Garde, 69005 Lyon, France Carlos G. Boluda Conservatoire et Jardin botaniques de la Ville de Genève, 1292 Genève, Switzerland Menno W. Boomsluiter T.v.Lohuizenstraat 34, 8172xl, Vaassen, The Netherlands Jan Borovička Institute of Geology, Czech Academy of Sciences, Rozvojova 269, 165 00 Prague 6, Czech Republic Tor Erik Brandrud Norwegian Institute for Nature Research, Gaustadalleen 21, 0349 Oslo, Norway Uwe Braun Martin-Luther-Universität, Institut für Biologie, Bereich Geobotanik, und Botanischer Garten, Herbarium, Neuwerk 21, 06099 Halle, Germany Irwin Brodo Canadian Museum of Nature, 240 McLeod Street, Ottawa, Ontario, Canada Tatiana Bulyonkova A.P. Ershov Institute of Informatics Systems, Russian Academy of Sciences, Siberian Branch, 6 Acad. Lavrentjev pr., Novosibirsk 630090, Russia Harold H. Burdsall Jr. Fungal & Decay Diagnostics, LLC, 9350 Union Valley Road, Black Earth, Wisconsin 53515, U.S.A. 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. Castellano USDA, Forest Service, Northern Research Station, Corvallis, Oregon 97330, U.S.A. Jie Chen Mae Fah Luang University, Chang Wat Chiang Rai 57100, Thailand Philippe Clerc Conservatoire et Jardin botaniques de la Ville de Genève, 1292 Genève, Switzerland Giovanni Consiglio Via C. Ronzani 61, 40033 Casalecchio Bologna, Italy Gilles Corriol National Botanical Conservatory for Pyrenees and Midi-Pyrénées Region of France and BBF Herbarium, Vallon de Salut. B.P. 315. 65203 Bagnères-de-Bigorre, France Régis Courtecuisse Université Lille, Fac. Pharma. Lille, EA4483 IMPECS, 59000 Lille, France Ana Crespo Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain Cathy Cripps Plant Sciences & Plant Pathology, 119 Plant Biosciences Building, Montana State University, Bozeman, Montana 59717, U.S.A. Pedro W. Crous Westerdijk Fungal Biodiversity Institute, P.O. 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Ledeganckstraat 35, 9000 Gent, Belgium Bárbara De Madrignac Bonzi Instituto de Botánica del Nordeste, Universidad Nacional de Nordeste-Consejo Nacional de Investigaciones Científicas y Técnicas, Sargento Cabral 2131, CC 209, Corrientes Capital, Argentina Thomas Edison E. dela Cruz University of Santo Tomas, Espana 1008 Manila, Philippines Lynn Delgat Ghent University, K.L. Ledeganckstraat 35, 9000 Gent, Belgium Vincent Demoulin Institut de Botanique, B.22, Université de Liège, 4000 Liège I, Belgium Dennis E. Desjardin HD Thiers Herbarium (SFSU), San Francisco State University, 1600 Holloway Ave, San Francisco, California 94132, U.S.A. Paul Diederich Musée national d’histoire naturelle, 25 rue Münster, 2160 Luxembourg, Luxembourg Bálint Dima (1) Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/c, 1117 Budapest, Hungary; (2) Viikki Plant Science Centre, University of Helsinki, P.O. 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Botanik, Staatliches Museum für Naturkunde Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany Damien Ertz Botanic Garden Meise, Nieuwelaan 38, 1860 Meise, Belgium Fernando Esteve-Raventós Facultad de Biología, Ciencias Ambientales y Química, Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain Javier Angel Etayo Salazar Navarro Villoslada 16, 3º dcha., 31003 Pamplona, Navarra, Spain Vera Evenson Sam Mitchel Herbarium of Fungi, Denver Botanic Gardens, 1007 York Street, Denver, Colorado 80206, U.S.A. Guillaume Eyssartier Muséum national d’histoire naturelle, Jardin des plantes, 57 rue Cuvier, 75005 Paris, France Edit Farkas Institute of Ecology and Botany, MTA Centre for Ecological Research, 2163 Vácrátót, Hungary Alain Favre Fédération Mycologique et Botanique Dauphiné Savoie, Le Prieuré, 144 Place de l’Eglise, 74320 Sevrier, France Anna G. Fedosova Komarov Botanical Institute of the Russian Academy of Sciences, 2 Prof. Popov Street, St. Petersburg, 197376, Russia Mario Filippa Regione Monsarinero 36, 14041 Agliano Terme, Italy Péter Finy 8000 Székesfehérvár, Zsombolyai u. 56, Hungary Adam Flakus W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Krakow, Poland Simón Fos Facultad de Ciencias Biológicas, Universitat de València, C/Dr Moliner 50, 46100, Burjasot, Valencia, Spain Jacques Fournier Las Muros, F. 09420 Rimont, France André Fraiture Botanic Garden Meise, Nieuwelaan 38, 1860 Meise, Belgium Paolo Franchi Associazione Micologica Bresadola, Via Alessandro Volta 46, 38123 Trento, Italy Ana Esperanza Franco Molano Escuela de Microbiología, Universidad de Antioquia, AA1226, Fundación Biodiversa Colombia, Medellín, Colombia Gernot Friebes Centre of Natural History, Botany & Mycology, Universalmuseum Joanneum, Weinzöttlstraße 16, 8045 Graz, Austria Andreas Frisch NTNU, University Museum, Norwegian University of Science and Technology, 7491 Trondheim, Norway Alan Fryday Michigan State University, East Lansing, Michigan 48824, U.S.A. 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García Otálora Herbaria Z+ZT, ETH Zürich, CHN D37, Universitätstr. 16, 8092 Zürich, Switzerland Dania García Sánchez Universitat Rovira i Virgili, C/ Sant Llorenç 21, 43201 Reus, Tarragona, Spain Alain Gardiennet 14 rue Roulette, 21260 Véronnes, France Sigisfredo Garnica Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Isla Teja Campus, Casilla 567, Valdivia, Chile Isaac Garrido Benavent Real Jardín Botánico-CSIC, Plaza de Murillo 2, 28014, Madrid, Spain Genevieve Gates Tasmanian Institute of Agriculture, Private Bag 54, Hobart, Tasmania 7001, Australia Alice da Cruz Lima Gerlach Conservatoire et Jardin Botaniques de la ville de Genève, Genève, Switzerland Masoomeh Ghobad-Nejhad Iranian Research Organization for Science and Technology, P.O. Box 15815-3538, Tehran 15819, Iran Tatiana B. 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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)

The lichenicolous taxa currently included in the genus Hainesia were studied based on the nuclear rDNA (18S, 28S, and internal transcribed spacer [ITS]) genes. The authors found that lichenicolous taxa form a distinct lineage sister to Epiglia gloeocapsae (Phacidiales, Leotiomycetes), only distantly related to the type species of Hainesia (Chaetomellaceae, Helotiales). Owing to morphological similarities, the authors include the lichenicolous species into the previously monotypic genus Epithamnolia. A new species, Epithamnolia rangiferinae, is described, several names are reduced into synonymy, and a key to the species of Epithamnolia is provided. The incorporation of public environmental ITS sequences showed that the closest relatives of these lichenicolous taxa are various endophytic, endolichenic, and soil-inhabiting fungi.

Detailed morphological and anatomical studies informed by molecular inferences with mtSSU as a marker revealed two new species of Micarea in Western Europe, both belonging to the core group of the genus, namely the M. prasina group: M. herbarum from the Netherlands and Poland and M. meridionalis from Portugal and Italy. Micarea herbarum looks like a small or depauperate M. denigrata but clearly differs by the lack of gyrophoric acid, while M. meridionalis is distinguished by its granular thallus and the production of micareic acid.

In this study we clarify the phylogeny and reassess the current taxonomy of the Micarea prasina group, focusing especially on the M. byssacea and M. micrococca complexes. The phylogeny was investigated using ITS, mtSSU and Mcm7 regions from 25 taxa belonging to the M. prasina group. A total of 107 new sequences were generated. Data were analyzed using maximum parsimony and maximum likelihood methods. The results reveal five undescribed well-supported lineages. Four of the lineages represent new species described as Micarea pseudomicrococca Launis & Myllys sp. nov., M. czarnotae Launis, van den Boom, Sérusiaux & Myllys sp. nov., M. microareolata Launis, Pykälä & Myllys sp. nov. and M. laeta Launis & Myllys sp. nov. In addition, a fifth lineage was revealed that requires further study. Micarea pseudomicrococca is characterized by an olive green granular thallus, small cream-white or brownish apothecia lacking the Sedifolia-grey pigment and two types of paraphyses up to 2 µm wide. Micarea czarnotae forms a granular, densely granular or continuous olive green thallus, convex to hemispherical apothecia often with the Sedifolia-grey pigment and no crystalline granules in the thallus. Micarea microareolata is characterized by a ± pale green areolate thallus (composed of goniocysts), cream-white apothecia lacking the Sedifolia-grey pigment and narrow spores. Micarea laeta has a vivid to olive green granular thallus, pale apothecia lacking the Sedifolia-grey pigment and wider spores compared to M. microareolata. Descriptions, images and a key are provided for the new species. Crystalline granules are introduced as a novel species-level character for Micarea.

Amandinea lobarica, a new corticolous lichen species, is described from high elevations in Guatemala. It is characterized by a thin, granulose, brownish thallus containing lobaric acid, small, convex lecideine apothecia, filiform conidia and large, narrowly ellipsoid ascospores with roughly ornamented walls. The new species is compared with other Buellia s. lat. taxa that possess rather large and strongly ornamented ascospores, such as Buellia hypothallina, here placed in synonymy with Gassicurtia vaccinii, Amandinea leucomela, A. mediospora, A. megaspora, A. subduplicata and five very closely related taxa treated here as belonging to the Amandinea incrustans group. Two tables summarizing the main differences between these species and a key are provided. New data on the chemistry of A. leucomela and a new record of A. montana for Guatemala are also included.

Schiefelbein, U., Dolnik, C., de Bruyn, U., Schultz, M., Thiemann, R., Stordeur, R., van den Boom, P. P. G., Litterski, B. & Sipman, H. J. M. 2014. Interesting records of lichenized, lichenicolous and saprophytic fungi from northern Germany. — Herzogia 27: 237–256. Details of 50 lichen species, 19 lichenicolous fungi and two saprophytic fungi from northern Germany are presented. Chrysothrix flavovirens, Opegrapha viridipruinosa and Sclerococcum tephromelarum are new to Germany. Arthonia digitatae, A. molendoi, Calicium parvum, Caloplaca limonia, Cornutispora intermedia, Endococcus rugulosus, Intralichen lichenicola, Lecidea nylanderi, Muellerella erratica, Pycnora sorophora and Verrucaria tristis are recorded for the first time from northern Germany. 38 species are added to the lichen flora of the federal state Mecklenburg-Western Pomerania, 12 species to Schleswig-Holstein, five species to Lower Saxony and one species to Brandenburg.

Detailed anatomical and chemical studies conducted on recent collections made in almost all suitable habitats on Réunion, a small remote tropical island in the Indian Ocean, yielded a surprising diversity in the widespread lichen genus Micarea (Pilocarpaceae, Lecanorales). Twenty-one species are recognized, including 13 described here as new to science. They are: Micarea alectorialica, M. bebourensis, M. borbonica, M. boryana, M. cilaoensis, M. hyalinoxanthonica, M. isidiosa, M. melanoprasina, M. pseudocoppinsii, M. pseudolignaria, M. sublithinella, M. takamakae and M. tenuispora. Notes on local ecology and important biogeographical features are also given and a key to the species is provided. Isidiiform areolae are reported for the first time in the genus (M. isidiosa and M. tenuispora), as well as the production of protolichesterinic and confluentic acids (M. sublithinella and M. takamakae, respectively). Two groups within the genus are species-rich on the island: the M. peliocarpa group with possibly 5 species, including 3 new to science, and the M. prasina group with 4 species, including 2 new to science. Micarea levicula is reported here for the first time since its description, and the status of the material that can be referred to M. micrococca s. lat. needs further study.

The new species Micarea usneae is described from Madeira. It has been found at two localities where it grew on epiphytic Usnea thalli. Micarea usneae is distinguished by a very thin pale brownish thallus, pallid to greyish black or bluish subglobose apothecia of 0·1–0·3 mm diameter, very narrow (1·5–2·5 µm) ascospores, black pycnidia and strongly curved to sigmoid macroconidia. Phylogenetic analyses using mtSSU sequences place the new species in the Micarea peliocarpa group. Catillaria usneicola and Cladonia parasitica are recorded for the first time from Madeira. A key to the lichenicolous species on Usnea in Macaronesia is provided.

A two-locus phylogenetic hypothesis of the family Roccellaceae is presented based on data from the nuclear ribosomal large subunit (nucLSU) and the second largest subunit of RNA polymerase II (RPB2). This analysis includes 341 sequences (166 newly generated) and 180 specimens representing about 114 species. The genera Lecanactis, Roccellina, Schismatomma and Sigridea were found to be paraphyletic/polyphyletic. In order to make these groups monophyletic, the new genera Crocellina, Diromma, Gyrographa, Gyronactis, Ocellomma, Pseudoschismatomma, Psoronactis and Vigneronia are described. The genus Sagenidium is placed in synonymy with Lecanactis. The new species Enterographa incognita, Gyronactis asiatica and Lecanactis submollis are described. Several species of Opegrapha are transferred to the Roccellaceae. Sorediate morphs are recorded for the first time in the genus Syncesia.

Buellia subericola,a new corticolous species characterized by a brown, blastidiate thallus without secondary chemistry and triseptate to occasionally submuriform ascospores, is described from the southern Iberian Peninsula. The species occurs onQuercus suberin grass-woodlands of cork-oak in the mesomediterranean belt with a warm mediterranean climate and oceanic influence. It is compared with other knownBuellias. lat. taxa which also reproduce asexually and have similar ascospores.

VAN DEN BOOM, P. P. G. & SIPMAN, H. J. M. 2013. Sixty-two species of lirelliform Graphidaceae (Ascomycota) new to Panama, including four species new to science. — Herzogia 26: 9–20. Based on fieldwork in 2010 and literature study, 71 species of Graphidaceae s. str. are reported from Panama. Sixtytwo species are new to the country including three species previously known only from their types: Graphis cupei, G. pseudoserpens and G. subflexibilis. Four species are newly described: Acanthothecis salazinica, A. maritima, Graphis fissurinoides and Phaeographis boquetensis.

Lecania chlorotiza and L. falcata, described here as new from Spain/Navarra, the Canary Islands and the Azores, do not belong to Lecania s. str. They belong to a strongly supported clade comprising Bacidia, Bacidina, Scutula and Toninia when examined with maximum parsimony, maximum likelihood and Bayesian inferences using mtSSU, nuLSU and nuITS sequences. This clade represents the Bacidiaceae and is included in the Ramalinaceae s. lat. Most genera included in that family need further work before a new genus can possibly be described for Lecania chlorotiza and L. falcata.

The resolution of the phylogenetic relationships within the order Teloschistales (Ascomycota, lichen-forming-fungi), with nearly 2000 known species and outstanding phenotypic diversity, has been hindered by the limitation in the resolving power that single-locus or two-locus phylogenetic studies have provided to date. In this context, an extensive taxon sampling within the Teloschistales with more loci (especially nuclear protein-coding genes) was needed to confront the current taxonomic delimitations and to understand evolutionary trends within this order. Comprehensive maximum likelihood and Bayesian analyses were performed based on seven loci using a cumulative supermatrix approach, including protein-coding genes RPB1 and RPB2 in addition to nuclear and mitochondrial ribosomal RNA-coding genes. We included 167 taxa representing 12 of the 15 genera recognized within the currently accepted Teloschistineae, 22 of the 43 genera within the Physciineae, 49 genera of the closely related orders Lecanorales, Lecideales, and Peltigerales, and the dubiously placed family Brigantiaeaceae and genus Sipmaniella. Although the progressive addition of taxa (cumulative supermatrix approach) with increasing amounts of missing data did not dramatically affect the loss of support and resolution, the monophyly of the Teloschistales in the current sense was inconsistent, depending on the loci-taxa combination analyzed. Therefore, we propose a new, but provisional, classification for the re-circumscribed orders Caliciales and Teloschistales (previously referred to as Physciineae and Teloschistineae, respectively). We report here that the family Brigantiaeaceae, previously regarded as incertae sedis within the subclass Lecanoromycetidae, and Sipmaniella, are members of the Teloschistales in a strict sense. Within this order, one lineage led to the diversification of the mostly epiphytic crustose Brigantiaeaceae and Letrouitiaceae, with a circumpacific center of diversity and found mostly in the tropics. The other main lineage led to another epiphytic crustose family, mostly tropical, and with an Australasian center of diversity the Megalosporaceae - which is sister to the mainly rock-inhabiting, cosmopolitan, and species rich Teloschistaceae, with a diversity of growth habits ranging from crustose to fruticose. Our results confirm the use of a cumulative supermatrix approach as a viable method to generate comprehensive phylogenies summarizing relationships of taxa with multi-locus to single locus data. (C) 2012 Elsevier Inc. All rights reserved.

Based on two field trips undertaken in 2009 as well as a review of the literature, a checklist of the lichens and the lichenicolous fungi from El Hierro, the most southwestern of the Canary Islands, is presented. As a result, a total of 589 taxa are reported, including 278 new for the island of which 57 are new for the Canary Islands. In addition, 5 species are newly described in the genera Lecania, Lecidea, Protoparmelia, Solenopsora and Trinathotrema. The number of novelties reported here indicates that El Hierro is exceedingly under-recorded for the lichens and the lichenicolous fungi. Terricolous, saxicolous, as well as corticolous species are recorded, but foliicolous lichens have not been found. Notes are given on ecology and sometimes on morphology and chemistry.

van den Boom, P. P. G., Brand, M., Ertz, D., Kalb, K., Magain, N., Masson, D., Schiefelbein, U., Sipman, H. J. M. & Serusiaux, E. 2011. Discovering the lichen diversity of a remote tropical island: working list of species collected on Reunion (Mascarene archipelago, Indian Ocean). - Herzogia 24: 325 -349. 463 lichen taxa are reported from the island of Reunion (Mascarene archipelago) in the Indian Ocean. This report is based on extensive collections recently made by the authors or hosted in B and LG. A total of c. 600 species is estimated for the number of lichenized fungi present on the island; although this is a low figure for a varied tropi- cal area, this is plausible due to its small size and remoteness. The significance of the lichen diversity of the island lays in its endemics, which need further study for a reliable assessment, and in the occurrence of a poorly known southern hemisphere element ("austral" species). The discovery of the following in Reunion is of special interest as it considerably enlarges their distribution range: Anzia corallophora, Caloplaca caesiosorediata, Coccocarpia delicatula, Fuscopannaria praetermissa, Gomphillus morchelloides, G. pedersenii, Gyalideopsis bispora, Heterodermia koyana, Hypotrachyna evansii, Lithogyalideopsis zeylandica, Lobaria asperula, Megaloblastenia marginiflexa var. dimota, Menegazzia capitata, Myeloconis erumpens and Pannaria squamulosa.

Morphological, anatomical, chemical and molecular data suggest that a relatively common lichenicolous coelomycete on Lecanora conizaeoides is conspecific with Phoma cytospora, previously known only from parmelioid lichens, and that further populations on Cladonia and Pertusaria belong to the same species. This species is distinguished from Phoma by several taxonomically important characters and obviously represents a previously unrecognized genus, for which the name Briancoppinsia is introduced. Phylogenetic analyses using nuLSU and mtSSU sequences of isolates obtained in pure culture suggest that the new genus belongs to the Arthoniaceae (Arthoniales). This is the first obligate lichenicolous, non-lichenized anamorph confirmed to belong to the Arthoniales based on molecular data.

Amandinea myrticola is described as new from Portugal. This corticolous species is characterized by the thin, smooth to minutely rugose and greyish thallus lacking secondary metabolites, the small lecideine apothecia which exhibit a pseudothalline margin when young and the small, smooth, Physconia-type ascospores with strongly pronounced and persistent median wall thickenings. It occurs on smooth bark in two localities characterized by a Mediterranean climate with an Atlantic influence.

The Buellia s. lat. species that occur in the Canary Islands are described including the related genera Amandinea, Diplotomma and Tetramelas. Species of the genera Coscinocladium, Dimelaena and Diploicia are also included. Forty-one species have been identified. Nine species are new records for the archipelago. The study of the type specimens and additional material of Buellia caloplacivora, B. sequax and B. leptina demonstrated that the two former are not conspecific and that the third is a valid taxon. The new combinations Buellia gomerana and Buellia alisioae are proposed. A short description, including the chemistry, ecology and distribution of all taxa is provided. A key to the species known to occur in the study area is also included.

Hafellner, J. & Boom, P. P. G. v. d. 2018: Combined lichenological results of two one-day trips to Liechtenstein. – Herzogia 31: 931–948.

Boom P. P. G. van den: New or interesting lichens and lichenicolous fungi of Gran Canaria (Canary Islands, Spain). —Willdenowia 40: 359–367. — Online ISSN 1868–6397; © 2010 BGBM Berlin-Dahlem. doi:10.3372/wi.40.40215 (available via http://dx.doi.org/) Eighty-five lichens and lichenicolous fungi are recorded from Gran Canaria for the first time. Eighteen species are also new to the Canary Islands, including Buelliella heppiae, Polycoccum rinodinae, Sphaerellothecium giraltiae, Zwackhiomyces heppiae and Z. solenopsorae, which are described as species new to science.

van den Boom P.P.G., Brand A.M., Coppins B.J. & Serusiaux E. 2018: A new Micarea species from western Europe, belonging in the Micarea denigrata group. – Herzogia 31: 385–389. A new species of Micarea, M. sambuci is described from western Europe. Though it was common in the Netherlands and also present in Belgium, Luxemburg , Germany, and Scotland, it could now be extinct. It differs from M. nitschkeana by the production of mesoconidia (2.7–4.1 × 1.1–1.5µm) and complete absence of micro- and macroconidia.

Well-developed ascospores ofRinodina flavosoraliferahave been observed for the first time. The ascospores are described and illustrated and new data on the chemistry and distribution of this species are provided. New chorological data onRinodina disjunctaare also included.

Lecanographa uniseptata is described as new to science. It is characterized by having small rounded to lirellate ascomata, and 1-septate ascospores. The species is known from tropical Africa (Gabon) and tropical America (Guatemala).

A comparative study of the morphology, anatomy and chemistry of Buellia lindingeri and Rinodina hallii clearly shows that these taxa are very closely related but not conspecific. The unique epihymenia distinguishes them from most species of both Buellia and Rinodina but, as they are more closely related to Rinodina, Buellia lindingeri is transferred to that genus.

Four new species of Halecania, H. etayoana (saxicolous) and H. fuscopannariae (lichenicolous) both from South America, and H. laevis and H. pannarica, both saxicolous from Europe, are described as new to science. Their ecology, distribution and chemistry are discussed.

The genus Endohyalina is characterized by crustose, autonomous, or obligately lichenicolous thalli, lecideine apothecia with a hymenium often more or less inspersed with oil droplets and a brown hypothecium, Bacidia-type asci, small Dirinaria-type ascospores developing with type B ontogeny, bacilliform conidia and containing diploicin as the major secondary metabolite. The genus is based on four species previously included in Rinodina—R. ericina s. lat., R. insularis, R. interjecta and R. kalbii—and on two lichenicolous species from the Canary Islands described here as new, Endohyalina brandii and E. diederichii. The generic type, Endohyalina rappii, is reduced to synonymy with E. ericina whereas E. circumpallida is excluded from the genus and returned to Buellia s. lat. Except for the thalline growth form and the common lichenicolous habit, the diagnostic characters of Endohyalina are akin to those of Diploicia. New chemical data on Endohyalina insularis and E. kalbii are reported, and a simple method for determining the secondary chemistry of lichenicolous fungi is provided.

Melanotopelia africanais described as new to science from Rwanda (continental Africa) and La Réunion (Mascarenes archipelago).Topeliopsis muscigenais here reported for the first time from La Réunion.

The silicicolous lichen species,Rinodina etayoiGiralt & van den Boom, is described as new from inland localities of Fuerteventura and Lanzarote (Canary Islands). It is characterized by a crustose, whitish thallus containing atranorin, zeorin, chloroatranorin and stictic acid, hemispheric pseudolecanorine apothecia containing, a proper exciple inspersed with numerous and large oil drops, and by ascospores of theMischoblastia-type. The joint occurrence of pannarin, stictic acid andMischoblastia-type ascospores makesR. etayoiunique within the genus.

Examination ofRinodinaspecimens from the Cape Verde Islands revealed three new species, which are described here:Rinodina capeverdeanaGiralt & van den Boom,R. inspersoparietataGiralt & van den Boom andR. polymorphaesporaGiralt & van den Boom. Additional information is given for six further species, of which five are new records for the archipelago.Rinodina punctosorediataAptroot & Sparrius was found to be conspecific withR. sticticaSheard & Tønsberg.

A revision of theLecanora saligna-group is provided, based on specimens mainly from western and central Europe. Four newLecanoraspecies related toL. salignaare described:L. calabrica,L. coppinsii,L. pseudosarcopidoidesandL. subsaligna, as well as a new variety,L. albellulavar.macroconidiata. The species treated have in common relatively short and ± curved or bacilliform conidia and/or isousnic acid as a secondary metabolite. Species without isousnic acid, containing exclusively filiform conidia are excluded. Notes on various types of conidia (macroconidia, microconidia, mesoconidia and leptoconidia), morphology, ecology, chemistry and distribution are given and a key to the treated species is provided. Detailed descriptions are presented for eight related species in order to highlight the distinguishing characters.

A new species, Lecania belgica, is described and illustrated. It is a saxicolous lichen known only from the type locality in Belgium. It is characterized by apothecia with pruinose, irregularly undulating discs, relatively short ascospores, and by having 12–16 spores in the asci. It was found on mortar together with Diplotomma alboatrum.

Forty-six species and three varieties of terricolous and saxicolous, cyanobacterial lichens are mentioned from the Canary Islands. The new combination Lichinella undulata (Henssen) M.Schultz & v.d.Boom is proposed. Gonohymenia cribellifera ssp. macrocarpum is reduced to synonymy with Lichinella cribellifera. Nineteen species and three varieties are new to the Canary Islands and many taxa are recorded as new for at least one of the Islands. New records of rare or poorly known lichens include: Heppia arenacea, H. conchiloba, Peccania arabica, Peccania teretiuscula, Peltula farinosa and Psorotichia hassei. An annotated list with notes on taxonomy, morphology, ecology and distribution of the species is provided. Selected species are illustrated.

Van Den Boom, P. P. G., P. Clerc & D. Ertz (2015). New records of lichens and lichenicolous fungi from La Gomera (Canary Islands, Spain), including the new species: Usnea boomiana P. Clerc. Candollea 70: 165–177. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2015v702a1 Lichens and lichenicolous fungi are very diverse in the Canary Islands but the flora is still poorly known despite numerous recent publications. For this reason, two field trips were undertaken in 2011 in order to study the lichen flora of La Gomera (western Canary Islands). About 1000 specimens were collected in the different habitats of the island. In addition, c. 200 specimens collected in 1986, and c. 60 specimens from the Oslo herbarium (O) were studied. As a result, an annotated list of 107 newly recorded lichens and lichenicolous fungi from La Gomera is presented. Terricolous, saxicolous, as well as corticolous species are included. Further notes are given for 17 taxa that are new for the Canary Islands. Hyp...

Detailed studies on the lichen genus Porina in Macaronesia have led to a reappraisal of the genuine identity of Porina atlantica (Erichsen) P. M. Jørg., a characteristic species that has previously been confused with P. guaranitica, P. heterospora, P. nucula, P. mastoidea or P. rhodostoma in the literature, and is here reported from Madeira, the Canary Islands, Ireland, France and Portugal. Two new species are described: P. effilata Brand & Sérus. sp. nov. (known from Madeira, the Canary Islands, Great Britain, Ireland and Portugal) and P. ocoteae Brand & Sérus. sp. nov. (restricted to La Palma, Canary Islands, and São Jorge in the Azores). Porina leptospora Nyl. is recognized at the species level, and P. isidiata Kalb & Hafellner is reduced into synonymy with P. atlantica. A key to all known species of Porina in Macaronesia is provided.

Caloplaca squamuloisidiata van den Boom & V. J. Rico is described as new to science. It is a saxicolous species, pale green to grey, with olivaceous patches, with a rimose-areolate, squamulose, lobulate and isidiate thallus, growing on inland exposed acid rock faces in the western half of the Iberian Peninsula in the Mediterranean region. Its ecology and distribution, and the lichen communities in which it was found are presented. A key to the isidiate and granular-isidiate Caloplaca species in Western Europe is also included.

Two species of Halecania from Asia, H. lobulata van den Boom & Elix and H. pakistanica van den Boom & Elix are described as new to science. In addition, the new combination Halecania pepegospora (H. Magn.) van den Boom is made. The ecology, distribution and chemistry of some selected species are discussed and a key to the fifteen species known worldwide is given.