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The new speciesAspicilia malvinaeis described from the Falkland Islands. It is the first species ofMegasporaceaeto be discovered on the islands and only the seventh to be reported from South America. It is distinguished from other species ofAspiciliaby the unusual secondary metabolite chemistry (hypostictic acid) and molecular sequence data. The collections of the new species support two lichenicolous fungi:Endococcus propinquuss. lat., which is new to the Falkland Islands, and a new species ofSagediopsiswith small perithecia and 3-septate ascosporesc.18–20 × 4–5 μm, which is described here asS. epimalvinae.A total of 60 new DNA sequences obtained from species ofMegasporaceae(mostlyAspicilia) are also introduced.

The two frequent Ramalina species in southern South America are R. laevigata Fr., which has abundant apothecia, and R. terebrata Hook. f. & Taylor, which lacks apothecia but has abundant sorediate ...

Compared to continental Antarctica, the lichen biota of the various subantarctic islands and island groups is poorly documented. Here we describe the new species Lecanora muscigena Ovstedal & Fryda...

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.

Eleven new species of crustose, lichenized fungi are described from the Falkland Islands (Islas Malvinas). Nine species are saxicolous, whereasLecania vermisporaoccurs on the stems ofHebe ellipticaandTephromela lignicolais lignicolous on fence posts. The new species are:Bacidia marina, with a sordid blue-green K−, N+ violet epihymenium and acicular, multiseptate ascospores;B. pruinata, with pruinose apothecia and multiseptate ascospores;Buellia gypsyensis, with a thallus containing 5-O-methylhiascic acid and withAmandinea-type conidia;Cliostomum albidum, with pruinose apothecia lacking pigments;C. longisporum, with long narrow ascospores (c.20 × 3 µm);Coccotrema rubromarginatum, with a placodioid thallus having a red-brown margin and lower surface;Hymenelia microcarpa, with minute, immersed apothecia (Lecania vermispora, with vermiform, 3–6 septate ascospores;Lepra argentea, with papillate isidia with dark caps;Rhizocarpon malvinae, which is similar toR. reductumbut with a grey thallus, generally sessile apothecia with a thick raised margin and often with the Cinereorufa-green pigment in the epithecium and upper exciple; andTephromela lignicola,a sterile, sorediate species on fence posts. Most of these species are reported only from the Falkland Islands althoughCoccotrema rubromarginatumis also reported from Isla de los Estados and Isla Grande de Tierra del Fuego, Argentina. Ascoconidia are reported fromLepra argenteaand cephalodia fromPertusaria pachythallina.Keys to the species reported from the Falkland Islands in the genera of the newly described species are also provided.

Recent field work in the Petersburg Borough of southeastern (SE) Alaska has led to the discovery of two species of lichenized fungi in the Ostropales that are here described as new to science: Jamesiella dacryoidea Fryday, which has green-grey dacryoid thlasidia, and Sagiolechia bairdensis Fryday, which has very small apothecia (

Lichens are complex multi-microorganismal communities that have evolved the ability to share their thalli with a variety of microorganisms. As such, the lichenized fungus becomes a scaffold for a variety of microbes and occasionally insects. Lichens are known to produce a plethora of unique specialized (secondary) compounds that demonstrate biological activities, including antibacterial, antifungal, antiviral, and antioxidant, that may provide protection from harmful microbes. The longevity of lichens and their robustness, despite a close association with diverse microbes, provides an interesting study system to view the role of specialized metabolites in managing a microbial community. The objective of this study was to identify the effects lichens may have on basic functions of fungi in and on the lichens. We tested chemical extracts from lichen species across the phylogenetic tree for their effects on sporulation, hyphal growth and specialized metabolite production, using two well-studied mycotoxigenic fungi (Aspergillus parasiticus (aflatoxin) and Fusarium graminearum (trichothecenes) whose functions are easily observed in culture. By far the most prevalent activity among the 67 lichens we tested were effects on accumulation of fungal specialized metabolites, which appeared in 92% of the lichen species analyzed across the phylogeny, although the lichen extracts were also active against fungal sporulation (31%) and growth (12%). The consistent presence of this regulatory activity for specialized metabolism indicates this is an important aspect of lichen integrity. Interestingly, inhibition of accumulation of products of the aflatoxin biosynthetic pathway was the predominant activity, whereas increased accumulation versus decreased accumulation of the production of trichothecenes were about equal. This suggests multiple mechanisms for addressing fungal processes. We performed microbiome analysis of four lichen species and identified oomycetes as members of the microbiomes. Although a small sample size was used for comparing microbiomes, the lichen species exhibiting lower effects on the test fungi had a higher number of OTUs. Members of the lichen community may manipulate specialized metabolism of the essential and transient fungal members and thus attenuate negative interactions with the incumbent fungi or, alternatively, may support the production of compounds by beneficial fungal partners. The ability to control the microbiome by specialized metabolites as opposed to controlling by reducing sporulation of growth, can be effective, discerning, and energetically thrifty, allowing the microbiome members to be controlled without being invasive. Elucidating the role of specialized metabolites in the mechanisms underlying lichen assembly and function has important implications for understanding not only lichen community assembly but for revealing the fundamental processes in microbiota in general.

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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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)

We report 100 lichen and allied fungi species for the first time from Quebec, Canada. Six of these species are new to North America: Arthonia subastroidea, Biatora mendax, Cornutispora pyramidalis, Gyalecta hypoleuca, Taeniolella pertusariicola, and Varicellaria lactea. Six additional species are new to Canada: Cecidonia xenophana, Lecidea commaculans, L. herteliana, Polycoccum sporastatiae, Scoliciosporum intrusum, and Stereocaulon leucophaeopsis. All collections are from parc national de la Gaspesie on the Gaspe Peninsula in eastern Quebec. Our collections were made between 2012 and 2017, primarily during Crum and Tuckerman Workshops. We provide diagnostic descriptions of all species that are new continental or national records. Our results demonstrate the park's rich and unexplored biodiversity and conservation importance, and contribute to a better understanding of the lichen and allied fungus biota of Canada and North America.

Lecanora kohu Printzen, Blanchon, Fryday et de Lange is described as new to science from Rangatira (South East Island), Chatham Islands. It is morphologically similar to L. symmicta (Ach.) Ach., from which it is distinguished by the continuous, areolate thallus, immersed apothecia with pale pink to pink-brown discs, and by the presence of atranorin and psoromic acid rather than usnic acid, zeorin and xanthones in the thallus. The new species is so far known only from Rangatira (South East Island), the southernmost of the three main islands of the Chatham Islands group where it was collected twice in 2015 on the bark of Melicytus chathamicus (Violaceae) and on the bark of an undescribed species of Muehlenbeckia (Polygonaceae), M. aff. australis. Using the New Zealand Threat Classification System, the new species has been assessed as ‘Data Deficient’.

The new species Xenolecia cataractarum Fryday is described from Campbell Island. It differs from X. spadicomma, the only other species of the genus, in having much smaller apothecia and ascospores, an olivaceously pigmented epihymenium (brown in X. spadicomma), and a thallus with a non-amyloid medulla and norstictic acid (amyloid medulla and confluentic acid in X. spadicomma). Xenolecia spadicomma is reported here from several localities on the Falkland Islands and three from the Región de Los Lagos, Chile, which are the first reports of this species since its description from Isla Wellington in the south-west of Patagonia in 1868. A full description of X. spadicomma is also provided.

Numerous recent studies of lichenized fungi have uncovered hidden genetic diversity within a single phenotypic entity (so-called ‘cryptic species’). Here we report the opposite situation with vastly different morphologies apparently deriving from the same genotype.Endocenais a monotypic genus known only from southern South America. The single reported species, the terricolousE. informis, is morphologically variable; the type and other collections from the west coast of Chile being subfruticose, whereas specimens from further south and east are almost crustose in form. A sorediate terricolous lichen that is frequent on the Falkland Islands was confirmed by phylogenetic analysis of ITS rDNA and mtSSU rDNA sequences as being congeneric withE. informisand, surprisingly, both taxa were recovered as congeneric with the recently described genus and speciesChirleja buckii, which is morphologically distinct from bothE. informisand the sorediate taxon. Consequently, the genusChirlejais included in the synonymy ofEndocenaand the new combinationEndocena buckiiis proposed. BecauseE. informisand the sorediate specimens have a similar thallus structure that differs radically from that ofE. buckii, the nameE. informisvar.falklandicais proposed for the sorediate taxon. Poorly developed, incipient apothecia are also described from both varieties ofE. informis, the first time that these have been reported forEndocena. We also report two lichenicolous fungi fromE. informisvar.informis, which are the first reports of lichenicolous fungi occurring on this genus.

A new Arthothelium species, A. hymeniicola in the apothecia of an unidentified Bacidia sp., is described from Campbell Island, New Zealand. The new species is remarkable, not only by being the first lichenicolous Arthothelium species, but also by being an endohymenial fungus not forming ascomatal structures. Previously, no Arthoniaceae species were reported as parasitic from Bacidia spp. However, both generic and family placements are tentative and the possibility of a placement in the Cookellaceae is also discussed. Differences between Arthoniaceae and Cookellaceae, and the generic delimitations within them, are generally based on the structures of the fruiting bodies, rendering the taxonomic placement of the new species challenging without molecular data; neither fruiting bodies nor molecular data are available for the new species and the Cookellaceae.

The new species Austrella isidioidea, which is unique in the genus in having isidioid structures on the thallus lobe ends as well as apothecia lacking a thalline margin, is described from the Falkland Islands. A collection with an identical mtSSU rDNA sequence to A. arachnoidea but with significant morphological differences (viz. a variable apothecial margin ranging from an arachnoid hyphal weft to a corticated regular margin) is reported from Îles Kerguelen. The phylogenetic and biogeographical implications of these new records are discussed.

The new species Psoroma nivale is described from an area of late snow-lie in the Keglo Bay area on the eastern side of Ungava Bay, northern Québec, Canada. It is superficially similar to P. hypnorum but has a dark, brownish black thallus colour without reddish hues, much-branched, proliferating squamules, thick paraphyses, distinct but inconspicuous IKI+ ascus tube structures, and characteristic elongate, bacilliform, often asymmetrical ascospores. The new species is compared with possible related taxa and its systematic position discussed. A key to the species of pannarioid lichens reported from arctic areas of North America is also provided.

The bryicolous lichen Ameliella andreaeicola is reported for only the second and third times from North America and new to the U.S. from Mitkof Island and Katmai National Preserve, Alaska. Its original discovery in Canada and rediscovery in Alaska are described, along with a note on its disjunct distribution.

Borgato, L., Fryday, A. M. & Ertz, D. 2020. Preliminary checklist of the lichens and lichenicolous fungi of Martinique, with 144 new records. – Herzogia 33: 139 –178.Martinique is a French island that is part of the Lesser Antilles archipelago in the Caribbean Sea. A preliminary checklist of the lichens and lichenicolous fungi known from this island is published for the first time. We report 247 lichens and four lichenicolous fungi, among which 87 taxa were already recorded in literature reports, whereas 144 additional species are here reported for the first time from studies of the collections stored in the herbaria of the Michigan State University (MSC) and the Meise Botanic Garden (BR), or from the databases of the herbaria of the Duke (DUKE) and Uppsala (UPS) universities. Arthonia arthoniicola is reported for the first time from the Neotropics. An additional 16 species from the same collections, for which the identification is uncertain, are also mentioned.

Geochemistry and mineralogy of rocks play important roles in the occurrence of individual lichen species and assembly of lichen communities. Whereas lichens of metal-enriched settings have been a focus of study for many decades, only a few such lichen inventories exist for North America. We reexamined the lichen biota of Pine Hill, a serpentine outcrop on Little Deer Isle, Maine and Callahan Mine, a copper- and zinc-enriched Superfund site in Brooksville, Maine by conducting additional field surveys and reexamining unidentified taxa from previous collections. To better characterize the substrates upon which the lichens were found, we conducted elemental analyses via x-ray fluorescence and inductively coupled plasma-mass spectrometry on rock samples collected at Pine Hill and recorded pH, electrical conductivity, and elemental concentrations via inductively coupled plasma mass spectrometry on soil samples from Callahan Mine. The re-investigation of lichens of the two metal-enriched sites resulted in the addition of 20 taxa to Pine Hill and 10 taxa to Callahan Mine. These include Dermatocarpon leptophyllodes, Placynthiella hyporhoda, Pyrenocarpon thelostomum, and Vezdaea acicularis, all recorded for the first time from New England. In addition, we report the first documented records since the late 19th to early 20th century for New England of Porocyphus coccodes, Sarcosagium campestre, and Steinia geophana, and the first such record for Maine for Coccocarpia palmicola. Stereocaulon condensatum and S. subcoralloides, both considered as rare in New England, were also collected from Callahan Mine.

Eight new species ofLecideaceaeare described from the southern subpolar region:Bryobilimbia coppinsianaFryday, a saxicolous species with one septate ascospores (Campbell Island, New Zealand);Immersaria fuliginosaFryday, with a thallus composed of thalloconidia (Falkland Islands);Lecidea aurantiaFryday, with an orange thallus (Auckland Islands, New Zealand);L. campbellensisFryday, with an endolithic thallus and apothecia resembling those of a species ofPorpidia(Campbell Island);Poeltiaria ochyraeHertel, which is similar toP. subinconguabut with a thick areolate thallus (South Orkney and South Shetland Islands);P. tasmanicaFryday, which is similar toP. urbanskyanabut with smaller ascopores (Tasmania);Poeltidea inspersaFryday with an enolithic thallus and a hymenium with large oil globules (Falkland Islands); andPorpidia vulcanoidesHertel & Fryday with immersed apothecia with a thick margin and large ascospores (SW Chile).Lecidea kalbiiHertel is resurrected from the synonymy ofL. manniiTuck. and treated as a distinct species. The circumscription of genera within theLecideaceaeis also discussed:Poeltiariais shown to be heterogeneous, and the generaLabyrinthaandNotolecideaare reduced to synonymy withPoeltideaandPoeltiariarespectively, and the new combinationsPoeltidia implexa(Malcolmet al.) Hertel & Fryday andPoeltiaria subcontinua(Hertel) Hertel & Fryday made. A key to the genera ofLecideaceaes. lat. is provided.

Whereas lichen-habitat relations have been well-documented globally, literature on lichens of vernal pools is scant. We surveyed six vernal pools at Acadia National Park on Mount Desert Island, Maine, USA for their lichen diversity. Sixty-seven species were identified, including seven species that are new reports for Acadia National Park: Fuscidea arboricola, Hypogymnia incurvoides, Lepraria finkii, Phaeographis inusta, Ropalospora viridis, Usnea flammea, and Violella fucata. Five species are considered uncommon or only locally common in New England: Everniastrum catawbiense, Hypogymnia krogiae, Pseudevernia cladonia, Usnea flammea, and Usnea merrillii. This work represents the first survey of lichens from vernal pools in Acadia National Park and strongly suggests that previous efforts at documenting species at the Park have underestimated its species diversity. More work should be conducted to determine whether a unique assemblage of lichens occurs in association with this unique habitat type.

The new generic name Bryobilimbia is proposed for Lecidea hypnorum and the closely related taxa Lecidea ahlesii var. ahlesii, L. ahlesii var. nemoralis, L. diapensiae, L. sanguineoatra and Mycobilimbia australis. A phylogenetic analysis based on five genes shows that Lecidea berengeriana does not belong to this group but is more closely related to Romjularia. Both groups of species have been included in Mycobilimbia by some authors but are instead shown to be most closely related to a group of genera (including Clauzadea, Farnoldia, Lecidoma and Romjularia) that do not belong to Lecideaceae s. str. A neotype is selected for Lichen sanguineoater Wulfen and the new combinations Bryobilimbia ahlesii var. ahlesii, B. ahlesii var. nemoralis, B. australis, B. diapensiae, B. hypnorum and B. sanguineoatra are proposed. A lectotype is also selected for L. templetonii Taylor.

Details are given of errors and additions to the recently published checklist of lichens reported from South Africa (Fryday 2015). The overall number of taxa reported from South Africa is increased by one, to 1751.

The new taxa Cliostomum subtenerum, Dactylospora suburceolata, Fuscidea oceanica, Lecania granulata, Lecidea herteliana, and Ropalospora lugubris f. sorediata are described from collections made from Scotland and Wales. Outside the British Isles, D. suburceolata is also known from Switzerland, L. herteliana from NE North America and R. lugubris f. sorediata from Sweden and NE North America. In addition, Lecidea luteoatra Nyl. belongs to the Lecanora marginata group and the name Lecanora viridiatra (Stenh.) Nyl. is taken up for this species, Peterjamesia sorediata is transferred to Roccellographa, and Ropalospora atroumbrina is included in the synonymy of R. lugubris f. sorediata.

Although several lichen inventories exist for European ultramafic sites, only four surveys of serpentine lichens for North America have been published to date. Of those, only one has been conducted in California. We conducted a survey of saxicolous lichens from ultramafic rocks (including nephrite, partially serpentinized peridotite, and serpentinite) and non-ultramafic rocks (including silica-carbonate, shale, and sandstone) at the New Idria serpentinite mass, San Benito County, California. X-ray Fluorescence Analysis of the rocks from which the lichens were collected revealed significant elemental differences between the ultramafic and non-ultramafic rocks for 26 of the 32 major and trace elements analyzed. We identified a total of 119 species of lichenized and lichenicolous fungi; 60 species were restricted to ultramafic substrata, 19 to silica-carbonate, and 15 to shale and sandstone. Only 4 species were shared in common. A permutational multivariate analysis of variance (perMANOVA) test revealed significant differences in lichen assemblages between ultramafic and non-ultramafic rocks at the species level but not at the generic level, with species richness (alpha-diversity) significantly greater at the ultramafic sites. We suggest that, although differences in geochemistry clearly influence the lichen community composition, other factors, especially substratum age and the physical characteristics of the rock, are of equal, if not greater, importance. Of all the species collected, six,Buellia aethalea,B. ocellata,Caloplaca oblongula,Rhizocarpon saurinum,Thelocarpon laureri, andTrapelia obtegens, are reported new to California, along with an apparently previously undescribedSolenopsorasp. The rest of the species encountered are relatively frequent in the lichen flora of southern and central California, exceptAspicilia praecrenata, a rare California endemic that we collected on both ultramafic and non-ultramafic rocks.

Ten new species in nine different genera are described from the Falkland Islands (Islas Malvinas): Bryonora granulata with a finely granular thallus containing perlatolic acid; Bryoria mariensis, a terricolous species with norstictic acid and unusual cortex cells; Carbonea hypopurpurea with a K+ purple hypothecium and a thallus containing confluentic and 2′-O-methylperlatolic acids; Caloplaca megalariicola lichenicolous on Megalaria grossa; Cladonia flammea with a red-orange coloration on the lower side of the primary squamules; Cliostomum falklandicum, on rocks and with a dispersed thallus containing only atranorin; Lepraria malouina with usnic and stictic acids; Rimularia andreaeicola, over bryophytes and lacking lichen substances; R. subpsephota, similar to R. psephota but with a discrete white thallus lacking norstictic acid; and Usnea austrocampestris, a straggling species in sect. Neuropogon from the mountain tops. Rimularia andreaeicola is also known from Tierra del Fuego and R. subpsephota from Tierra del Fuego and South Georgia, but the other species are known only from the Falkland Islands. The new combinations Carbonea agellata, C. subdeclinans, Cliostomum aeruginascens and C. violascens are also made; Lecidea interrupta Darb. and Lecidea protracta Darb. are reduced to synonymy with Lecanora xantholeuca (Müll. Arg.) Hertel; Rhizocarpon simillimum is reported for the first time from the Southern Hemisphere, from the Falkland Islands and New Zealand; and Bryoria chalybeiformis is reported for the first time from the Falkland Islands.

It has been suggested that the absence of anthraquinones is not a synapomorphic character, but appears independently in unrelated lineages of Teloschistaceae. We analyzed ITS nrDNA regions in species of the genus Caloplaca and present evidence for five such examples: the Caloplaca cerina group, C. obscurella, the C. servitiana group, the C. xerica group and the C. variabilis group (Pyrenodesmia). In some cases, loss of anthraquinones is observed only in individuals within ordinarily pigmented populations, but sometimes the loss covers whole lineages containing one or more species. Both situations are observed in the C. servitiana group. Loss of anthraquinones is always followed by the synthesis of ‘alternative’ pigments (often Sedifolia-grey). In the specimens with anthraquinone-containing apothecia studied, these pigments are not visible in apothecial sections after dissolving anthraquinones in K. Fully unpigmented apothecia have not been observed.The Caloplaca xerica group is a newly established, infraspecific grouping of species related to, and similar to, C. xerica. The Caloplaca servitiana group is also newly established and represents an isolated lineage covering two rather different, but related species. Caloplaca neotaurica is described here as a new species with apothecia of two colour variants; orange-red (with anthraquinones) and grey (with Sedifolia-grey).The genus Huea represents another taxon lacking anthraquinones within Teloschistaceae. The genera Apatoplaca and Cephalophysis, which lack anthraquinones, are tentatively placed in Teloschistaceae, but their phylogenetic identity has not been recognized. Hueidea is reported to have no anthraquinones, but its secondary metabolites should be studied further and its possible placement in Teloschistaceae assessed.We suggest that Caloplaca abbreviata var. lecideoides and C. celata represent variants of C. stillicidiorum lacking anthraquinones.

The new species Calvitimela austrochilenis Fryday and Tephromela superba Fryday are described: the former from several collections from southern Chile and one from Marion Island, and the latter from southern South America (including the Falkland Islands), Campbell Island, (New Zealand), and Antarctica. Four new combinations are also made in Tephromela: T. atrocaesia (Nyl. ex Cromb.) Fryday from Îles Kerguelen, Heard Island, South Georgia, and southern South America; T. atroviolacea (Flot.) Fryday from southern South America and Îles Kerguelen; T. lirellina (Darb.) Fryday from only southern South America; and T. skottsbergii (Darb.) Fryday, which is shown to be an earlier name for T. austrolitoralis (Zahlbr.) Kalb & Elix, from throughout the region. Lectotypes are selected for Lecanora atrocaesia and L. atroviolacea. The systematic placement of Tephromela eatonii (Cromb.) Hertel from Kerguelen, Marion Island and Bouvetøya is also discussed but the species is retained in Tephromela.

The species assigned to the genus Catillochroma are reassessed. The two characters used to characterize Catillochroma, exciple anatomy and thalline chemistry, are shown to be variable and contradictory with a number of intermediates. Consequently, Catillochroma is reduced to synonymy with Megalaria, and the species previously placed in Catillochroma transferred, or returned, to Megalaria. As such, the following new combinations are proposed: Megalaria anaglyptica, M. endochroma, M. intermiscens and M. leptocheila. The genus Lopezaria is also shown to be related to Megalaria and to be closely related to the type species of Catillochroma, C. endochroma, and so is also reduced to synonymy with Megalaria. A number of species found to have been misplaced in Catillaria are also transferred to Megalaria: M. leucochlora, M. melanopotamica, M. obludens, M. pannosa and M. phaeolomiza. Megalaria imshaugii is reduced to synonymy with M. obludens, Megalaria pannosa is reported for the first time from North America and Lopezaria isidiza is reported for the first time from outside Asia from Jamaica.

Two species,Cliostomum coppinsiiFryday & Kantvilas sp. nov. from Scotland, andCliostomum praepallidum(Müll. Arg.) Kantvilas & Fryday comb. nov. from Tasmania and southern South America, are described, illustrated and discussed. Both occupy an unusual position within the genus on account of their atypically wide, ± polarilocular ascospores.Patellaria banksiaeMüll. Arg., based on a collection from Australia, is lectotypified and reduced to synonymy withCliostomum griffithii(Sm.) Coppins.

Acarospora malouina Øvstedal & K. Knudsen is described from the Falkland Islands. It is morphologically very similar to the Antarctic species A. gwynnii but differs in chemistry, ecology and evidence from molecular data.

Katahdin, the highest peak in Maine at 1606 m, has about 13 km2 (1300 ha) of alpine and subalpine tundra and krummholz on a summit plateau and in upper cirque basins. Lichens and bryophytes have been collected above tree line since the mid-19th century, but the cryptogam biota of the mountain has remained incompletely documented. For 16 days during 2001–2004 we inventoried lichens and bryophytes of the subalpine and alpine zones of Katahdin (above 884 m), visiting open alpine tundra, alpine cliffs in glacial cirques, seeps, fellfields, krummholz and subalpine forests. We relocated most species represented by historic collections and added many more to the documented biota, including significant range extensions and species new to North America or northeastern United States. The floristic results are presented in two associated papers. Here we (1) summarize previous studies of the botany, ecology and geology of Katahdin; (2) compare quadrats from a Diapensia heath in exposed alpine tundra on the T...

The species of the genus Fuscidea occurring in North America are revised. Two new species, Fuscidea appalachensis Fryday and F. texana Fryday, are described from eastern North America and southern Texas, respectively. Three new combinations are also made in Fuscidea: Lecidea aleutica Degel. is shown to be a distinct species and not a synonym of Fuscidea lowensis (H. Magn.) R. Anderson & Hertel as previously suggested and is here recognized as F. aleutica (Degel.) Fryday; non-sorediate, apotheciate specimens from eastern North America previously referred to F. recensa (Stirt.) Hertel, V. Wirth & Vězda are recognized as Fuscidea recensa var. arcuatula (Arnold) Fryday; and Fuscidea scrupulosa (Eckf.) Fryday is shown to be the correct name for Fuscidea subreagens (H. Magn.) Oberholl. & V. Wirth. Fuscidea subfilamentosa (Zahlbr.) Brako is shown to be a member of the Lecidea hypnorum group and the new combination Lecidea subfilamentosa (Zahlbr.) Fryday is made, and Lecidea gyrodes H. Magn., described from Tennessee, is shown to be a synonym of F. recensa var. arcuatula. Fuscidea cyathoides (Ach.) V. Wirth & Vězda, F. kochiana (Hepp) V. Wirth & Vězda and F. lightfootii (Sm.) Coppins & P. James are considered not to have been correctly reported from North America.

The new combination Lithographa skottsbergii (Zahlbr.) Fryday & Coppins is made for Enterostigma skottsbergii Zahlbr., described from the Juan Fernandez Islands off the coast of Chile. The species is known only from Chile but its geographical range is here extended to include maritime regions of south-west Chile. The distribution pattern of the Lithographa species with submuriform ascospores is also discussed.

Background: The last comprehensive list of lichenised, lichenicolous and allied fungi reported from South Africa was published in 1950. A checklist is important to provide basic information on the extent of the diversity, and to provide the most recent name and classification. Objective: To present a list of all the lichenised, lichenicolous and allied fungi reported from South Africa. Methods: The list presented is entirely literature based and no attempt has been made to check the report of any taxa or their status by checking the specimens upon which they are based. Firstly, all taxa that were not reported from within the modern boundaries of South Africa were excluded. Next, the Recent literature on lichens database was searched for literature on South African lichens since 1945 and all references checked for new species or new reports, which were then added to the list. These names were then checked against Index Fungorum to ensure that the most current name was being used. Finally, the list was rationalised by excluding all synonyms and dubious infraspecific taxa. Results: The current list includes 1750 taxa in 260 genera from mainland South Africa, with an additional 100 species and 23 genera from the sub-Antarctic Prince Edward Islands, which are treated separately. The replacement name Verrucaria dagolavii Fryday is proposed for Verrucaria umbilicata Ovstedal. Conclusion: It is estimated that, when fully explored, the lichen biota of South Africa will consist of somewhere between 2500 and 3000 taxa.

Ten lichen species: Buellia miriquidica, Catillaria contristans, Fuscidea gothoburgensis, Hymenelia cyanocarpa, Lecanora caesiosora, “Lecidea” commaculans, Metamelanea umbonata, Micarea coppinsii, M. marginata and Stereocaulon plicatile are reported for the first time for North America from Mt. Katahdin, Maine. A further 22 taxa for which the Mt. Katahdin records represent a significant extension of their range on the continent, mostly being first reports from either eastern North America or the contiguous United States, are also reported.

Twenty-six lichen taxa are reported for the first time from either the Tierra del Fuego Archipelago, the Falkland Islands (Islas Malvinas), or both, from collections made by Henry Imshaug and his co-workers between 1968 and 1971 and now housed in the herbarium of Michigan State University (MSC). Of these, Alectoria sarmentosa subsp. vexillifera, Bartlettiella fragilis, Micarea incrassata, M. melaena, Parmelia kerguelensis, Rhizocarpon infernulum and R. submodestum are reported for the first time from South America, and Alectoria nigricans, Brigantiaea fuscolutea, Buellia anisomera, B. subcervina, Caloplaca isidioclada, C. millegrana, Lecidella wulfenii and Megalospora tuberculosa are reported for the first time from Argentina or the Falkland Islands.

Lithographa serpentina Coppins & Fryday is newly described from Campbell Island (New Zealand), and is unique within its genus and order for having submuriform ascospores. Also newly described are Lithographa opegraphoides Coppins & Fryday from the Falkland Isles, Rimularia actinostoma Coppins & Fryday from Canada (British Columbia), and Rimularia austrolimborina Coppins & Fryday from southern Chile. The new combination Lithographa graphidioides (Cromb.) Imshaug ex Coppins & Fryday is made to accommodate the previously misunderstood Stigmatidium graphidioides Cromb. and the more recently described Lithographa subantarctica Hertel & Rambold. A key to all described species of Lithographa is provided.

Nimisia deusta, based on Parmelia enteromorpha var. deusta, is shown to be the correct name for the species currently known as N. fuegiae. Original material collected by J. D. Hooker in 1842, and collections made by Henry Imshaug between 1968 and 1971, have shown that the species is more widely distributed than previously reported, being known throughout the southern tip of South America (Argentina: Isla Grande de Tierra del Fuego, Isla de los Estados; Chile: Cape Horn Islands; Falkland Islands), that it has a uniform secondary metabolite chemistry of fumarprotocetraric acid in the upper medulla (not lacking lichen substances as previously reported), and that it is not uniformly black but has a partly pale brown upper cortex.

The new species, Fuscopannaria globigera Fryday & P. M. Jorg, is described, Catillaria jemtlandica is transferred to Megalaria with Lecidea sublimosa included as a synonym, and Pyrenocollema bryospilum is transferred to Collemopsidium. Epigloea medioincrassata and Lecidea haerjedalica are recorded for the first time from North America and Arthonia lapidicola, Caloplaca spitsbergensis, C. variabilis, Dactylospora deminuta, and Rhizocarpon lecanorinum are documented for the first time from Alaska.

Strigula confusa Fryday, Coppins & Common is described from the western British Isles, where it grows over bryophytes on mildly basic rocks. The concept of the genus Thelenella is expanded to include Chromatochlamys and the following new combinations are made: Thelenella larbalestieri (A. L. Sm.) Coppins & Fryday, Thelenella muscorum var. octospora (Nyl.) Coppins & Fryday, Thelenella vezdae (H. Mayrhofer & Poelt) Coppins & Fryday. Thelenella sordidula (Th. Fr.) H. Mayrhofer is reported for the first time from Europe (Svalbard).

In 1971, W. A. Weber described Buellia saurina from aeolian sandstone in the Dinosaur National Monument in Utah, U.S.A. In his description, Weber mentioned several characters that are rather unusual for the genus Buellia, especially a lemon yellow thallus and a violet-brown hymenium. Careful re-examination of material at ASU and the holotype from COLO demonstrates that the species does not belong to Buellia, but needs to be transferred to Rhizocarpon. The bright yellow pigment is rhizocarpic acid, a substance not known from Buellia. The asci of the specimens belong to the Rhizocarpon-type. Although the young ascospores are two-celled, they frequently become irregularly muriform with age. The violet epihymenial pigment that can be identified as atra-red, is also unusual in Buellia and currently only known from the taxonomically isolated Buellia vilis Th. Fr. The new combination, Rhizocarpon saurinum (W. A. Weber) Bungartz, is made.

Bacidia nivalis, known only from the Pacific Northwest of North America, is transferred to Stereocaulon as S. nivale. This is the first report of a crustose species of Stereocaulon from North America.

Rhizocarpon hochstetteri s. str. is shown to be an upland/montane species with relatively large ascospores. The name Rhizocarpon infernulum is resurrected for the species with smaller ascospores previously included within R. hochstetteri, but which is probably more closely related to R. cinereovirens. Lectotypes are chosen for a number of taxa, including R. cinereovirens and R. infernulum, and descriptions provided for two new taxa with small hyaline, 1–septate ascospores: R. caesium, which occurs on damp, mildly basic rocks in oceanic areas, and R. infernulum f. sylvaticum occurring on siliceous rocks in damp deciduous woodlands. All these taxa are known also from North America. Rhizocarpon discoense is shown to be a distinct species, not a synonym of R. cinereovirens. The different ascospore dimensions reported for R. hochstetteri by British and European authors are shown to be due to confusion between R. hochstetteri and R. polycarpum. A number of morphological characters are evaluated regarding their relevance to species separation in Rhizocarpon and the name Macrocarpa-green is proposed for the olivaceous pigment present in most species of Rhizocarpon and Porpidia. A key is provided for the species of Rhizocarpon with hyaline, 1– septate ascospores.

The new species Rhizocarpon timdalii, is described from north-west Europe and north-east North America. The ecology and distribution of the new species are also discussed.

Understanding how many species exist and the processes by which they form remains a central topic of ecological and evolutionary biology, but represents a special challenge within microbial groups. The lichen-forming fungi represent one of the best examples in which species evolution and diversity create patterns of high phenotypic plasticity coupled with wide geographic distributions. We sampled the lichen-forming species Tephromela atra and related species at a world-wide scale to reconstruct a phylogenetic hypothesis using three nuclear markers. Samples were also studied for morphological and chemical traits to assess how well the phenotypic relationships with species, previously segregated from T. atra, agrees with molecular data. We used a genealogical concordance approach and identified 15 monophyletic clades, which may represent independent lineages. By combining morphological and chemical characters, ecological preferences and geographic origin we distinguish six different species. Although subtle phenotypical traits are frequently used for describing previously cryptic species in fungi, the continuum of variability found in morphology and chemical patterns in T. atra prevents the description of new taxa with characteristic traits. We observed that phenotypic characters arise in parallel at local or regional scale but are not correlated with genetic isolation. Therefore, they are insufficient for characterizing species with broad geographic ranges within T. atra.

The results of an investigation into the lichen vegetation associated with vascular plant communities in the Scottish Highlands are presented. Most lichen species rarely occur in homogeneous stands of vascular plant vegetation, either occurring around the edges of recognized National Vegetation Classification (NVC) communities or in small-scale mosaics with them. However, some lichen species have a high fidelity to the more open NVC communities. The problems associated with applying NVC survey techniques to lichen assemblages are described and discussed.

The new species, Schaereria porpidioides, is described from collections made by H. A. Imshaug & R. C. Harris from the Falkland Islands in 1968. The systematic position of Schaereria, with respect to its relationship to Trapelia, is discussed.

Summary The effects of grazing animals on montane lichen vegetation was shown to be both quantitative and qualitative, and to decrease with increasing elevation. There was a significant decrease in biomass of fruticose lichens, which were also fragmented so that colonies were smaller and did not form luxuriant cushions. There was an increase in the influence of the substratum due to the destruction of the deep vascular plant and bryophyte layer. There was also an increase in the number of crustose species, due to reduced competition from vascular plants and exposure of additional habitats. Lichen species diversity was shown to be inversely related to the height of the vascular-plant vegetation.