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1. Myriospora molybdina comb. nov. and the identity of Acarospora hysgina

Author

Westberg, Martin, Wedin, Mats, Svensson, Måns, Westberg, Martin, Wedin, Mats, and Svensson, Måns

Abstract

The nomenclature and taxonomy of Acarospora molybdina is revised using morphological and molecular data. The new combination Myriospora molybdina is proposed and Acarospora hysgina is recognized as a distinct species while A. brunneola is reduced to synonymy with A. hysgina. In its new circumscription M. molybdina is an arctic species, in Scandinavia only occurring in northernmost Norway. Further localities are reported from Greenland, Russia, Svalbard and the USA (Alaska). Acarospora hysgina is the correct name for a species distributed along the west coast of Sweden and Norway, formerly thought to belong to A. molybdina. Localities are also reported from Canada (New Brunswick), Greenland and the USA (Maine). The following names are lectotypified: Acarospora brunneola, A. molybdina var. confusa, Lecanora ereutica beta microcyclos, Parmelia ereutica, P. hysgina and P. molybdina.

Published
2024
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2. The underestimated fraction : diversity, challenges and novel insights into unicellular cyanobionts of lichens

Author

Jung, Patrick, Briegel-Williams, Laura, Büdel, Burkhard, Schultz, Matthias, Nürnberg, Dennis J., Grube, Martin, D'Agostino, Paul M., Kastovský, Jan, Mares, Jan, Lorenz, Maike, Gil González, Manuel Luis, Dal Forno, Manuela, Westberg, Martin, Chrismas, Nathan, Pietrasiak, Nicole, Whelan, Paul, Dvorak, Petr, Kosuthová, Alica, Gkelis, Spyros, Bauersachs, Thorsten, Schiefelbein, Ulf, Giao, Võ Thi Phi, Lakatos, Michael, Jung, Patrick, Briegel-Williams, Laura, Büdel, Burkhard, Schultz, Matthias, Nürnberg, Dennis J., Grube, Martin, D'Agostino, Paul M., Kastovský, Jan, Mares, Jan, Lorenz, Maike, Gil González, Manuel Luis, Dal Forno, Manuela, Westberg, Martin, Chrismas, Nathan, Pietrasiak, Nicole, Whelan, Paul, Dvorak, Petr, Kosuthová, Alica, Gkelis, Spyros, Bauersachs, Thorsten, Schiefelbein, Ulf, Giao, Võ Thi Phi, and Lakatos, Michael

Abstract

Lichens are remarkable and classic examples of symbiotic organisms that have fascinated scientists for centuries. Yet, it has only been for a couple of decades that significant advances have focused on the diversity of their green algal and/or cyanobacterial photobionts. Cyanolichens, which contain cyanobacteria as their photosynthetic partner, include up to 10% of all known lichens and, as such, studies on their cyanobionts are much rarer compared to their green algal counterparts. For the unicellular cyanobionts, i.e. cyanobacteria that do not form filaments, these studies are even scarcer. Nonetheless, these currently include at least 10 different genera in the cosmopolitan lichen order Lichinales. An international consortium (International Network of CyanoBionts; INCb) will tackle this lack of knowledge. In this article, we discuss the status of current unicellular cyanobiont research, compare the taxonomic resolution of photobionts from cyanolichens with those of green algal lichens (chlorolichens), and give a roadmap of research on how to recondition the underestimated fraction of symbiotic unicellular cyanobacteria in lichens.

Published
2024
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6. Structure, Composition, and Function of Biocrust Lichen Communities

Author

Rosentreter, Roger, Eldridge, David J., Westberg, Martin, Williams, Laura, Grube, Martin, Caldwell, Martyn M., Series editor, Díaz, Sandra, Series editor, Heldmaier, Gerhard, Series editor, Jackson, Robert B., Series editor, Lange, Otto L., Series editor, Levia, Delphis F., Series editor, Mooney, Harold A., Series editor, Schulze, Ernst-Detlef, Series editor, Sommer, Ulrich, Series editor, Weber, Bettina, editor, Büdel, Burkhard, editor, and Belnap, Jayne, editor

Published
2016
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8. Considerations and consequences of allowing DNA sequence data as types of fungal taxa

Author

Zamora, Juan Carlos, Svensson, Måns, Kirschner, Roland, Olariaga, Ibai, Ryman, Svengunnar, Parra, Luis Alberto, Geml, József, Rosling, Anna, Adamčík, Slavomír, Ahti, Teuvo, Aime, M. Catherine, Ainsworth, A. Martyn, Albert, László, Albertó, Edgardo, García, Alberto Altés, Ageev, Dmitry, Agerer, Reinhard, Aguirre-Hudson, Begoña, Ammirati, Joe, Andersson, Harry, Angelini, Claudio, Antonín, Vladimír, Aoki, Takayuki, Aptroot, André, Argaud, Didier, Sosa, Blanca Imelda Arguello, Aronsen, Arne, Arup, Ulf, Asgari, Bita, Assyov, Boris, Atienza, Violeta, Bandini, Ditte, Baptista-Ferreira, João Luís, Baral, Hans-Otto, Baroni, Tim, Barreto, Robert Weingart, Beker, Henry, Bell, Ann, Bellanger, Jean-Michel, Bellù, Francesco, Bemmann, Martin, Bendiksby, Mika, Bendiksen, Egil, Bendiksen, Katriina, Benedek, Lajos, Bérešová-Guttová, Anna, Berger, Franz, Berndt, Reinhard, Bernicchia, Annarosa, Biketova, Alona Yu., Bizio, Enrico, Bjork, Curtis, Boekhout, Teun, Boertmann, David, Böhning, Tanja, Boittin, Florent, Boluda, Carlos G., Boomsluiter, Menno W., Borovička, Jan, Brandrud, Tor Erik, Braun, Uwe, Brodo, Irwin, Bulyonkova, Tatiana, Burdsall, Jr., Harold H., Buyck, Bart, Burgaz, Ana Rosa, Calatayud, Vicent, Callac, Philippe, Campo, Emanuele, Candusso, Massimo, Capoen, Brigitte, Carbó, Joaquim, Carbone, Matteo, Castañeda-Ruiz, Rafael F., Castellano, Michael A., Chen, Jie, Clerc, Philippe, Consiglio, Giovanni, Corriol, Gilles, Courtecuisse, Régis, Crespo, Ana, Cripps, Cathy, Crous, Pedro W., da Silva, Gladstone Alves, da Silva, Meiriele, Dam, Marjo, Dam, Nico, Dämmrich, Frank, Das, Kanad, Davies, Linda, De Crop, Eske, De Kesel, Andre, De Lange, Ruben, De Madrignac Bonzi, Bárbara, dela Cruz, Thomas Edison E., Delgat, Lynn, Demoulin, Vincent, Desjardin, Dennis E., Diederich, Paul, Dima, Bálint, Dios, Maria Martha, Divakar, Pradeep Kumar, Douanla-Meli, Clovis, Douglas, Brian, Drechsler-Santos, Elisandro Ricardo, Dyer, Paul S., Eberhardt, Ursula, Ertz, Damien, Esteve-Raventós, Fernando, Salazar, Javier Angel Etayo, Evenson, Vera, Eyssartier, Guillaume, Farkas, Edit, Favre, Alain, Fedosova, Anna G., Filippa, Mario, Finy, Péter, Flakus, Adam, Fos, Simón, Fournier, Jacques, Fraiture, André, Franchi, Paolo, Molano, Ana Esperanza Franco, Friebes, Gernot, Frisch, Andreas, Fryday, Alan, Furci, Giuliana, Márquez, Ricardo Galán, Garbelotto, Matteo, García-Martín, Joaquina María, Otálora, Mónica A. García, Sánchez, Dania García, Gardiennet, Alain, Garnica, Sigisfredo, Benavent, Isaac Garrido, Gates, Genevieve, da Gerlach, Alice Cruz Lima, Ghobad-Nejhad, Masoomeh, Gibertoni, Tatiana B., Grebenc, Tine, Greilhuber, Irmgard, Grishkan, Bella, Groenewald, Johannes Z., Grube, Martin, Gruhn, Gérald, Gueidan, Cécile, Gulden, Gro, Gusmão, Luis F. P., Hafellner, Josef, Hairaud, Michel, Halama, Marek, Hallenberg, Nils, Halling, Roy E., Hansen, Karen, Harder, Christoffer Bugge, Heilmann-Clausen, Jacob, Helleman, Stip, Henriot, Alain, Hernandez-Restrepo, Margarita, Herve, Raphaël, Hobart, Caroline, Hoffmeister, Mascha, Høiland, Klaus, Holec, Jan, Holien, Håkon, Hughes, Karen, Hubka, Vit, Huhtinen, Seppo, Ivančević, Boris, Jagers, Marian, Jaklitsch, Walter, Jansen, AnnaElise, Jayawardena, Ruvishika S., Jeppesen, Thomas Stjernegaard, Jeppson, Mikael, Johnston, Peter, Jørgensen, Per Magnus, Kärnefelt, Ingvar, Kalinina, Liudmila B., Kantvilas, Gintaras, Karadelev, Mitko, Kasuya, Taiga, Kautmanová, Ivona, Kerrigan, Richard W., Kirchmair, Martin, Kiyashko, Anna, Knapp, Dániel G., Knudsen, Henning, Knudsen, Kerry, Knutsson, Tommy, Kolařík, Miroslav, Kõljalg, Urmas, Košuthová, Alica, Koszka, Attila, Kotiranta, Heikki, Kotkova, Vera, Koukol, Ondřej, Kout, Jiří, Kovács, Gábor M., Kříž, Martin, Kruys, Åsa, Kučera, Viktor, Kudzma, Linas, Kuhar, Francisco, Kukwa, Martin, Kumar, T. K. Arun, Kunca, Vladimír, Kušan, Ivana, Kuyper, Thomas W., Lado, Carlos, Læssøe, Thomas, Lainé, Patrice, Langer, Ewald, Larsson, Ellen, Larsson, Karl-Henrik, Laursen, Gary, Lechat, Christian, Lee, Serena, Lendemer, James C., Levin, Laura, Lindemann, Uwe, Lindström, Håkan, Liu, Xingzhong, Hernandez, Regulo Carlos Llarena, Llop, Esteve, Locsmándi, Csaba, Lodge, Deborah Jean, Loizides, Michael, Lőkös, László, Luangsa-ard, Jennifer, Lüderitz, Matthias, Lumbsch, Thorsten, Lutz, Matthias, Mahoney, Dan, Malysheva, Ekaterina, Malysheva, Vera, Manimohan, Patinjareveettil, Marin-Felix, Yasmina, Marques, Guilhermina, Martínez-Gil, Rubén, Marson, Guy, Mata, Gerardo, Matheny, P. Brandon, Mathiassen, Geir Harald, Matočec, Neven, Mayrhofer, Helmut, Mehrabi, Mehdi, Melo, Ireneia, Mešić, Armin, Methven, Andrew S., Miettinen, Otto, Romero, Ana M. Millanes, Miller, Andrew N., Mitchell, James K., Moberg, Roland, Moreau, Pierre-Arthur, Moreno, Gabriel, Morozova, Olga, Morte, Asunción, Muggia, Lucia, González, Guillermo Muñoz, Myllys, Leena, Nagy, István, Nagy, László G., Neves, Maria Alice, Niemelä, Tuomo, Nimis, Pier Luigi, Niveiro, Nicolas, Noordeloos, Machiel E., Nordin, Anders, Noumeur, Sara Raouia, Novozhilov, Yuri, Nuytinck, Jorinde, Ohenoja, Esteri, Fiuza, Patricia Oliveira, Orange, Alan, Ordynets, Alexander, Ortiz-Santana, Beatriz, Pacheco, Leticia, Pál-Fám, Ferenc, Palacio, Melissa, Palice, Zdeněk, Papp, Viktor, Pärtel, Kadri, Pawlowska, Julia, Paz, Aurelia, Peintner, Ursula, Pennycook, Shaun, Pereira, Olinto Liparini, Daniëls, Pablo Pérez, Capella, Miquel À. Pérez-De-Gregorio, del Amo, Carlos Manuel Pérez, Gorjón, Sergio Pérez, Pérez-Ortega, Sergio, Pérez-Vargas, Israel, Perry, Brian A., Petersen, Jens H., Petersen, Ronald H., Pfister, Donald H., Phukhamsakda, Chayanard, Piątek, Marcin, Piepenbring, Meike, Pino-Bodas, Raquel, Esquivel, Juan Pablo Pinzón, Pirot, Paul, Popov, Eugene S., Popoff, Orlando, Álvaro, María Prieto, Printzen, Christian, Psurtseva, Nadezhda, Purahong, Witoon, Quijada, Luis, Rambold, Gerhard, Ramírez, Natalia A., Raja, Huzefa, Raspé, Olivier, Raymundo, Tania, Réblová, Martina, Rebriev, Yury A., García, Juan de Dios Reyes, Ripoll, Miguel Ángel Ribes, Richard, Franck, Richardson, Mike J., Rico, Víctor J., Robledo, Gerardo Lucio, Barbosa, Flavia Rodrigues, Rodriguez-Caycedo, Cristina, Rodriguez-Flakus, Pamela, Ronikier, Anna, Casas, Luis Rubio, Rusevska, Katerina, Saar, Günter, Saar, Irja, Salcedo, Isabel, Martínez, Sergio M. Salcedo, Montoya, Carlos A. Salvador, Sánchez-Ramírez, Santiago, Sandoval-Sierra, J. Vladimir, Santamaria, Sergi, Monteiro, Josiane Santana, Schroers, Hans Josef, Schulz, Barbara, Schmidt-Stohn, Geert, Schumacher, Trond, Senn-Irlet, Beatrice, Ševčíková, Hana, Shchepin, Oleg, Shirouzu, Takashi, Shiryaev, Anton, Siepe, Klaus, Sir, Esteban B., Sohrabi, Mohammad, Soop, Karl, Spirin, Viacheslav, Spribille, Toby, Stadler, Marc, Stalpers, Joost, Stenroos, Soili, Suija, Ave, Sunhede, Stellan, Svantesson, Sten, Svensson, Sigvard, Svetasheva, Tatyana Yu., Świerkosz, Krzysztof, Tamm, Heidi, Taskin, Hatira, Taudière, Adrien, Tedebrand, Jan-Olof, Lahoz, Raúl Tena, Temina, Marina, Thell, Arne, Thines, Marco, Thor, Göran, Thüs, Holger, Tibell, Leif, Tibell, Sanja, Timdal, Einar, Tkalčec, Zdenko, Tønsberg, Tor, Trichies, Gérard, Triebel, Dagmar, Tsurykau, Andrei, Tulloss, Rodham E., Tuovinen, Veera, Sosa, Miguel Ulloa, Urcelay, Carlos, Valade, François, Garza, Ricardo Valenzuela, van den Boom, Pieter, Van Vooren, Nicolas, Vasco-Palacios, Aida M., Vauras, Jukka, Santos, Juan Manuel Velasco, Vellinga, Else, Verbeken, Annemieke, Vetlesen, Per, Vizzini, Alfredo, Voglmayr, Hermann, Volobuev, Sergey, von Brackel, Wolfgang, Voronina, Elena, Walther, Grit, Watling, Roy, Weber, Evi, Wedin, Mats, Weholt, Øyvind, Westberg, Martin, Yurchenko, Eugene, Zehnálek, Petr, Zhang, Huang, Zhurbenko, Mikhail P., and Ekman, Stefan

Published
2018
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9. Stochastic Runge–Kutta Lawson Schemes for European and Asian Call Options Under the Heston Model

Author

Kuiper, Nicolas, Westberg, Martin, Kuiper, Nicolas, and Westberg, Martin

Abstract

This thesis investigated Stochastic Runge–Kutta Lawson (SRKL) schemes and their application to the Heston model. Two distinct SRKL discretization methods were used to simulate a single asset’s dynamics under the Heston model, notably the Euler–Maruyama and Midpoint schemes. Additionally, standard Monte Carlo and variance reduction techniques were implemented. European and Asian option prices were estimated and compared with a benchmark value regarding accuracy, effectiveness, and computational complexity. Findings showed that the SRKL Euler–Maruyama schemes exhibited promise in enhancing the price for simple and path-dependent options. Consequently, integrating SRKL numerical methods into option valuation provides notable advantages by addressing challenges posed by the Heston model’s SDEs. Given the limited scope of this research topic, it is imperative to conduct further studies to understand the use of SRKL schemes within other models.

Published
2023

10. Thalloidima squamatum comb. nov. – a distinct and common but overlooked lichen in Europe.

Author

Westberg, Martin, Ekman, Stefan, Briegel-Williams, Laura, Fernandez-Brime, Samantha, Wedin, Mats, and Timdal, Einar

Subjects
LICHENS, FUNGAL morphology, FUNGAL phylogeny, ASCOSPORES, BIOLOGICAL specimens
Abstract

The new combination Thalloidima squamatum is proposed for a morphologically and phylogenetically distinct species, until now included within the variation of T. sedifolium. Compared to T. sedifolium, the species is characterized by its larger squamules and apothecia, shorter ascospores, the pale color of the excipulum, and its habitat growing on moss cushions over calcareous rock or directly on rock rather than on soil. Most of the material studied originates from Norway and Sweden, but specimens are also reported from Austria, Croatia, Germany, Greenland, Italy, Poland, Russia, Scotland and Switzerland. [ABSTRACT FROM AUTHOR]

Published
2023
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13. The circumscription and phylogenetic position of Bryonora (Lecanoraceae, Ascomycota), with two additions to the genus

Author

Svensson, Måns, Haugan, Reidar, Timdal, Einar, Westberg, Martin, Arup, Ulf, Svensson, Måns, Haugan, Reidar, Timdal, Einar, Westberg, Martin, and Arup, Ulf

Abstract

Lecanoraceae is one of the largest families of the Lecanoromycetes, with about 30 accepted genera, many of which, however, have uncertain status and/or circumscriptions. We assess the phylogenetic position of the genus Bryonora and its segregate Bryodina for the first time, using a six-locus phylogeny comprising the Lecanoraceae as well as closely related families. We find strong support for the placement of Bryonora in the Lecanoraceae, whereas there is no support for treating Bryodina as a genus separate from Bryonora. Hence, we reduce Bryodina to synonymy with Bryonora. Further, we describe Bryonora microlepis as new to science and transfer Lecanora castaneoides to Bryonora and L. vicaria to Miriquidica. A world key to Bryonora is included.

Published
2022
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14. A revision of the Rostania occultata (Collemataceae) complex in Fennoscandia

Author

Kosuthova, Alica, Westberg, Martin, Wedin, Mats, Kosuthova, Alica, Westberg, Martin, and Wedin, Mats

Abstract

The Rostania occultata species complex ('Collema occultatum s. lat.') is revised in Fennoscandia and found to consist of four species, all epiphytes on deciduous trees: Rostania effusa A. Kosuth., M. Westb. & Wedin sp. nov., R. occultata (Bagl.) Otalora et al., R. pallida A. Kosuth., M. Westb. & Wedin sp. nov. and R. populina (Th. Fr.) A. Kosuth., M. Westb. & Wedin comb. nov. Rostania effusa and R. pallida are newly described from humid habitats in old-growth boreal coniferous forests, usually with a mixture of deciduous trees, and from similar areas in the subalpine birch-dominated forests of Fennoscandia. Rostania effusa is characterized by apothecia with red-brown apothecium discs and an excipulum thallinum with a simple pseudocortex and cubic to oblong, muriform spores. Rostania pallida has apothecia with whitish to pale yellowish discs and an excipulum thallinum with a distinct cellular pseudocortex, and ellipsoid, muriform mature spores that are often constricted at the centre. A lectotype is designated for Collema quadratum J. Lahm ex Korb. The new combination Rostania populina is introduced for the species recognized until now as the variety Rostania occultata var. populina (Th. Fr.) Perlmutter & Rivas Plata. A key to the six species in Rostania s. str. is included.

Published
2022
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17. Fungal diversity notes 111–252—taxonomic and phylogenetic contributions to fungal taxa

Author

Ariyawansa, Hiran A., Hyde, Kevin D., Jayasiri, Subashini C., Buyck, Bart, Chethana, K. W. Thilini, Dai, Dong Qin, Dai, Yu Cheng, Daranagama, Dinushani A., Jayawardena, Ruvishika S., Lücking, Robert, Ghobad-Nejhad, Masoomeh, Niskanen, Tuula, Thambugala, Kasun M., Voigt, Kerstin, Zhao, Rui Lin, Li, Guo-Jie, Doilom, Mingkwan, Boonmee, Saranyaphat, Yang, Zhu L., Cai, Qing, Cui, Yang-Yang, Bahkali, Ali H., Chen, Jie, Cui, Bao Kai, Chen, Jia Jia, Dayarathne, Monika C., Dissanayake, Asha J., Ekanayaka, Anusha H., Hashimoto, Akira, Hongsanan, Sinang, Jones, E. B. Gareth, Larsson, Ellen, Li, Wen Jing, Li, Qi-Rui, Liu, Jian Kui, Luo, Zong Long, Maharachchikumbura, Sajeewa S. N., Mapook, Ausana, McKenzie, Eric H. C., Norphanphoun, Chada, Konta, Sirinapa, Pang, Ka Lai, Perera, Rekhani H., Phookamsak, Rungtiwa, Phukhamsakda, Chayanard, Pinruan, Umpava, Randrianjohany, Emile, Singtripop, Chonticha, Tanaka, Kazuaki, Tian, Cheng Ming, Tibpromma, Saowaluck, Abdel-Wahab, Mohamed A., Wanasinghe, Dhanushka N., Wijayawardene, Nalin N., Zhang, Jin-Feng, Zhang, Huang, Abdel-Aziz, Faten A., Wedin, Mats, Westberg, Martin, Ammirati, Joseph F., Bulgakov, Timur S., Lima, Diogo X., Callaghan, Tony M., Callac, Philipp, Chang, Cheng-Hao, Coca, Luis F., Dal-Forno, Manuela, Dollhofer, Veronika, Fliegerová, Kateřina, Greiner, Katrin, Griffith, Gareth W., Ho, Hsiao-Man, Hofstetter, Valerie, Jeewon, Rajesh, Kang, Ji Chuan, Wen, Ting-Chi, Kirk, Paul M., Kytövuori, Ilkka, Lawrey, James D., Xing, Jia, Li, Hong, Liu, Zou Yi, Liu, Xing Zhong, Liimatainen, Kare, Lumbsch, H. Thorsten, Matsumura, Misato, Moncada, Bibiana, Nuankaew, Salilaporn, Parnmen, Sittiporn, de Azevedo Santiago, André L. C. M., Sommai, Sujinda, Song, Yu, de Souza, Carlos A. F., de Souza-Motta, Cristina M., Su, Hong Yan, Suetrong, Satinee, Wang, Yong, Wei, Syuan-Fong, Wen, Ting Chi, Yuan, Hai Sheng, Zhou, Li Wei, Réblová, Martina, Fournier, Jacques, Camporesi, Erio, Luangsa-ard, J. Jennifer, Tasanathai, Kanoksri, Khonsanit, Artit, Thanakitpipattana, Donnaya, Somrithipol, Sayanh, Diederich, Paul, Millanes, Ana M., Common, Ralph S., Stadler, Marc, Yan, Ji Ye, Li, XingHong, Lee, Hye Won, Nguyen, Thi T. T., Lee, Hyang Burm, Battistin, Eliseo, Marsico, Orlando, Vizzini, Alfredo, Vila, Jordi, Ercole, Enrico, Eberhardt, Ursula, Simonini, Giampaolo, Wen, Hua-An, Chen, Xin-Hua, Miettinen, Otto, Spirin, Viacheslav, and Hernawati

Published
2015
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27. Carbonea tephromelae M. Svensson & M. Westb. 2021, sp. nov

Author

Svensson, Måns and Westberg, Martin

Subjects
Ascomycota, Lecanorales, Fungi, Lecanoraceae, Biodiversity, Lecanoromycetes, Carbonea tephromelae, Taxonomy, Carbonea
Abstract

Carbonea tephromelae M.Svensson & M.Westb. sp. nov. Fig. 2A–2E MycoBank No: MB840305 Holotype:— SWEDEN. Lule lappmark: Jokkmokk par., Padjelanta National Park, 11 km WNW of Staloluokta, S slope of Unna Duvgge (Unna Toki), c. 460 m NE of small cabin, 67.34787˚N, 16.45453˚E, elev. 703 m, S-exposed slope in bare mountain region, on Tephromela atra on rock, 5 August 2020, Martin Westberg PAD384 (UPS L-994014). Diagnosis:—Distinguished from other Carbonea species with a colourless hypothecium by having globose to broadly ellipsoid spores and by growing on Tephromela atra. Etymology:—Named after its host species Tephromela atra (Huds.) Hafellner. Description:—Lichenicolous fungus. Thallus inapparent, inhabiting the thallus of Tephromela atra, which darkens and is apparently damaged due to the infection (Fig 2A). Apothecia black, shining, c. 0.2–0.4(–0.5) mm diam., rounded to flexuose, sessile on the thallus of the host. Disc flat or becoming somewhat convex in larger apothecia. Proper exciple concolorous with the disc, persistent, narrow, raised or level with the disc in older apothecia. Apothecial anatomy: Proper exciple opaque, appearing black even in thin sections, densely pigmented blue-green (Cinereorufa-green sensu Meyer & Printzen 2000) in the upper part, in the lower part beneath the hypothecium in mixture with a dark brown pigment, c. 20–45(–85) µm thick, composed of radiating, thick-walled hyphae with c. 2 µm wide lumina. Hymenium colourless or faintly blue-green, c. 50–75 µm tall. Epihymenium strongly blue-green (Cinereorufa-green), N+ red, K−. Hypothecium colourless, without visible crystals in polarized light. Paraphyses simple or forked near the tips, septate and often slightly constricted at the septa, c. 1.5 µm in midhymenium, tips colourless, cylindrical to clavate, 1.5–2.5 µm wide. Asci of Lecanora - type, 8-spored, clavate, 41–49 × 12–19 µm. Ascospores broadly ellipsoid to globose, (7.5–)8.66 ±0.97(–11) × (5.5–)6.81 ±0.71(–8.5) µm; l/b ratio (1–)1.28 ±0.2(– 1.67) (n=57). Distribution and habitat:—The species is so far known from two localities in northern Sweden. Its host Tephromela atra, however, is a common and widespread lichen on both calcareous and non-calcareous rocks. We searched for Carbonea tephromelae in 264 collections of T. atra sensu lato in herb. UPS, of which 183 were from Europe, 29 from North America, 22 from Oceania, 14 from Asia, 12 from South America and 4 from Africa, without finding any additional specimens. Most of the examined collections were from lowland localities, and it is possible that C. tephromelae is restricted to or at least more common in alpine to subalpine localities. Additional specimens examined: — SWEDEN. Lule lappmark: Jokkmokk par., Padjelanta National Park, 11 km WNW of Staloluokta, S slope of Unna Duvgge (Unna Toki), 67.35390˚N, 16.45239˚E, elev. 818 m, steep S-exposed slope in bare mountain region with partly calcareous rocks, on Tephromela atra on rock, 2 August 2020, M. Westberg PAD133 (UPS L-994013). Lycksele lappmark: Tärna par., Ume älv, Över-Umans sydvästligaste vik, ”Kobresia-ön” [= the river Ume älv, the southwesternmost inlet of Lake Över-Uman, ”the Kobresia-island”], 66˚06–07’N, 14˚32–33’E, alt. 530 m, kalkfri glimmerskiffer på holmens toppdel [= Calcium-free mica schist on the highest part of the islet], 19 August 1960, G. E. Du Rietz 951d (UPS L-115703); Ume älv, Över-Umans sydvästligaste vik, ”ön 138” [= the river Ume älv, the southwesternmost inlet of Lake Över-Uman, ”the island 138”], 66˚06–07’N, 14˚32–33’E. Alt. 530 m. Lösa stenar i andra Dryas -backen ovan stranden [= loose rocks in the second Dryas -slope above the shore], 29 August 1960, G. E. Du Rietz 2197i (UPS L-119284)., Published as part of Svensson, Måns & Westberg, Martin, 2021, A new lichenicolous species of Carbonea (Ascomycota, Lecanoraceae) from northern Sweden, pp. 221-230 in Phytotaxa 522 (3) on pages 225-226, DOI: 10.11646/phytotaxa.522.3.5, http://zenodo.org/record/5560427, {"references":["Meyer, B. & Printzen, C. (2000) Proposal for a standardized nomenclature and characterization of insoluble lichen pigments. Lichenologist 32: 571 - 583. https: // doi. org / 10.1006 / lich. 2000.0294"]}

Published
2021
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28. Improved appreciation of the functioning and importance of biological soil crusts in Europe: the Soil Crust International Project (SCIN)

Author

Büdel, Burkhard, Colesie, Claudia, Green, T. G. Allan, Grube, Martin, Lázaro Suau, Roberto, Loewen-Schneider, Katharina, Maier, Stefanie, Peer, Thomas, Pintado, Ana, Raggio, José, Ruprecht, Ulrike, Sancho, Leopoldo G., Schroeter, Burkhard, Türk, Roman, Weber, Bettina, Wedin, Mats, Westberg, Martin, Williams, Laura, and Zheng, Lingjuan

Published
2014
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30. Erratum to: Fungal diversity notes 111–252—taxonomic and phylogenetic contributions to fungal taxa

Author

Ariyawansa, Hiran A., Hyde, Kevin D., Jayasiri, Subashini C., Buyck, Bart, Chethana, K. W. Thilini, Dai, Dong Qin, Dai, Yu Cheng, Daranagama, Dinushani A., Jayawardena, Ruvishika S., Lücking, Robert, Ghobad-Nejhad, Masoomeh, Niskanen, Tuula, Thambugala, Kasun M., Voigt, Kerstin, Zhao, Rui Lin, Li, Guo-Jie, Doilom, Mingkwan, Boonmee, Saranyaphat, Yang, Zhu L., Cai, Qing, Cui, Yang-Yang, Bahkali, Ali H., Chen, Jie, Cui, Bao Kai, Chen, Jia Jia, Dayarathne, Monika C., Dissanayake, Asha J., Ekanayaka, Anusha H., Hashimoto, Akira, Hongsanan, Sinang, Jones, E. B. Gareth, Larsson, Ellen, Li, Wen Jing, Li, Qi-Rui, Liu, Jian Kui, Luo, Zong Long, Maharachchikumbura, Sajeewa S. N., Mapook, Ausana, McKenzie, Eric H. C., Norphanphoun, Chada, Konta, Sirinapa, Pang, Ka Lai, Perera, Rekhani H., Phookamsak, Rungtiwa, Phukhamsakda, Chayanard, Pinruan, Umpava, Randrianjohany, Emile, Singtripop, Chonticha, Tanaka, Kazuaki, Tian, Cheng Ming, Tibpromma, Saowaluck, Abdel-Wahab, Mohamed A., Wanasinghe, Dhanushka N., Wijayawardene, Nalin N., Zhang, Jin-Feng, Zhang, Huang, Abdel-Aziz, Faten A., Wedin, Mats, Westberg, Martin, Ammirati, Joseph F., Bulgakov, Timur S., Lima, Diogo X., Callaghan, Tony M., Callac, Philipp, Chang, Cheng-Hao, Coca, Luis F., Dal-Forno, Manuela, Dollhofer, Veronika, Fliegerová, Kateřina, Greiner, Katrin, Griffith, Gareth W., Ho, Hsiao-Man, Hofstetter, Valerie, Jeewon, Rajesh, Kang, Ji Chuan, Wen, Ting-Chi, Kirk, Paul M., Kytövuori, Ilkka, Lawrey, James D., Xing, Jia, Li, Hong, Liu, Zou Yi, Liu, Xing Zhong, Liimatainen, Kare, Lumbsch, H. Thorsten, Matsumura, Misato, Moncada, Bibiana, Nuankaew, Salilaporn, Parnmen, Sittiporn, de Azevedo Santiago, André L. C. M., Sommai, Sujinda, Song, Yu, de Souza, Carlos A. F., de Souza-Motta, Cristina M., Su, Hong Yan, Suetrong, Satinee, Wang, Yong, Wei, Syuan-Fong, Wen, Ting Chi, Yuan, Hai Sheng, Zhou, Li Wei, Réblová, Martina, Fournier, Jacques, Camporesi, Erio, Luangsa-ard, J. Jennifer, Tasanathai, Kanoksri, Khonsanit, Artit, Thanakitpipattana, Donnaya, Somrithipol, Sayanh, Diederich, Paul, Millanes, Ana M., Common, Ralph S., Stadler, Marc, Yan, Ji Ye, Li, XingHong, Lee, Hye Won, Nguyen, Thi T. T., Lee, Hyang Burm, Battistin, Eliseo, Marsico, Orlando, Vizzini, Alfredo, Vila, Jordi, Ercole, Enrico, Eberhardt, Ursula, Simonini, Giampaolo, Wen, Hua-An, Chen, Xin-Hua, Miettinen, Otto, Spirin, Viacheslav, and Hernawati

Published
2015
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33. A new lichenicolous species of Carbonea (Ascomycota, Lecanoraceae) from northern Sweden

Author

Svensson, Måns, Westberg, Martin, Svensson, Måns, and Westberg, Martin

Abstract

Carbonea is a widely distributed genus of lecideoid fungi, including both lichenized and non-lichenized, often parasitic species. We describe the new, non-lichenized species Carbonea tephromelae, based on material collected in the Swedish part of the Scandes. The new species is characterized by a colourless hypothecium, broadly ellipsoid to globose ascospores, and by growing on the thallus of the common saxicolous lichen Tephromela atra. It is similar to the likewise lichenicolous species C. supersparsa and C. vitellinaria, but is clearly separated from these species by anatomy and in a phylogenetic analysis based on four markers (mrSSU, ITS, RPB1, RPB2). Carbonea tephromelae is apparently specific to T. atra, but the use of host specificity as a character for species delimitation in lichenicolous species of Carbonea needs further evaluation.

Published
2021
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34. Crittendenia gen. nov., a new lichenicolous lineage in the Agaricostilbomycetes (Pucciniomycotina), and a review of the biology, phylogeny and classification of lichenicolous heterobasidiomycetes

Author

Millanes, Ana M., Diederich, Paul, Westberg, Martin, Wedin, Mats, Millanes, Ana M., Diederich, Paul, Westberg, Martin, and Wedin, Mats

Abstract

The lichenicolous 'heterobasidiomycetes' belong in the Tremellomycetes (Agaricomycotina) and in the Pucciniomycotina. In this paper, we provide an introduction and review of these lichenicolous taxa, focusing on recent studies and novelties of their classification, phylogeny and evolution. Lichen-inhabiting fungi in the Pucciniomycotina are represented by only a small number of species included in the genera Chionosphaera, Cyphobasidium and Lichenozyma. The phylogenetic position of the lichenicolous representatives of Chionosphaera has, however, never been investigated by molecular methods. Phylogenetic analyses using the nuclear SSU, ITS, and LSU ribosomal DNA markers reveal that the lichenicolous members of Chionosphaera form a monophyletic group in the Pucciniomycotina, distinct from Chionosphaera and outside the Chionosphaeraceae. The new genus Crittendenia is described to accommodate these lichen-inhabiting species. Crittendenia is characterized by minute synnemata-like basidiomata, the presence of clamp connections and aseptate tubular basidia from which 4-7 spores discharge passively, often in groups. Crittendenia, Cyphobasidium and Lichenozyma are the only lichenicolous lineages known so far in the Pucciniomycotina, whereas Chionosphaera does not include any lichenicolous taxa.

Published
2021
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35. SLFs exkursion till västra Jämtland 6-9 augusti 2020

Author

Hammarström, Ola, Westberg, Martin, Hammarström, Ola, and Westberg, Martin

Abstract

SLF återvänder gång på gång till Jämtland av förklarliga skäl. I början av augusti samlades ett gäng på 25 laventusiaster i västra Jämtland för några dagars lavjakt i de fina miljöerna kring Kallsjön.

Published
2021

36. Örtlav, Lobaria virens, i Fiby urskog

Author

Westberg, Martin, Soler Kinnerbäck, Karl, Dahlberg, Tore, Svensson, Måns, Ekman, Stefan, Westberg, Martin, Soler Kinnerbäck, Karl, Dahlberg, Tore, Svensson, Måns, and Ekman, Stefan

Abstract

En bild på Facebook i gruppen ”Mossor och lavar” fick stor uppmärksamhet och gav upphov till många kommentarer och en livfull diskussion kring vilken lav det rörde sig om. Efter närmare undersökning visade det sig att det rörde sig om örtlav, Lobaria virens, från en ny och mycket oväntad lokal.

Published
2021

40. Integrative taxonomy reveals a new species, Nephroma orvoi, in the N. parile species complex (lichenized Ascomycota)

Author

Timdal, Einar, Westberg, Martin, Haugan, Reidar, Hofton, Tom Hellik, Holien, Håkon, Speed, James David Mervyn, Tønsberg, Tor, and Bendiksby, Mika

Subjects
Matematikk og Naturvitenskap: 400 [VDP], Matematikk og Naturvitenskap: 400::Basale biofag: 470 [VDP]
Abstract

Our knowledge of the diversity and distribution of many groups of lichens remains poor due to unclear species boundaries and challenging species identification. We have studied the medium sized to large foliose lichen Nephroma parile, which is known to be heterogeneous in chemistry and genetics. Our aim has been to assess the potential presence of evolutionary significant units within the Nephroma parile species complex that may be worthy of recognition at species level. Using phylogenetic analysis of the fungal DNA-barcode marker (ITS) in combination with studies of morphology and chemistry, we discover two distinct lineages in the N. parile species complex. For the strongly supported clade that corresponds to chemotype II, we describe the new species Nephroma orvoi. The new species is known from Norway, Sweden, Finland, Switzerland, Canada (Alberta and British Columbia), USA (Washington), and Greenland. publishedVersion

Published
2020

41. Contrasting Environmental Drivers Determine Biodiversity Patterns in Epiphytic Lichen Communities along a European Gradient

Author

Hurtado, Pilar, Prieto, Maria, de Bello, Francesco, Aragon, Gregorio, Lopez-Angulo, Jesus, Giordani, Paolo, Maria Diaz-Pena, Eva, Vicente, Rebeca, Merinero, Sonia, Kosuthova, Alica, Benesperi, Renato, Bianchi, Elisabetta, Mayrhofer, Helmut, Nascimbene, Juri, Grube, Martin, Wedin, Mats, Westberg, Martin, Martinez, Isabel, Hurtado, Pilar, Prieto, Maria, de Bello, Francesco, Aragon, Gregorio, Lopez-Angulo, Jesus, Giordani, Paolo, Maria Diaz-Pena, Eva, Vicente, Rebeca, Merinero, Sonia, Kosuthova, Alica, Benesperi, Renato, Bianchi, Elisabetta, Mayrhofer, Helmut, Nascimbene, Juri, Grube, Martin, Wedin, Mats, Westberg, Martin, and Martinez, Isabel

Abstract

Assessing the ecological impacts of environmental change on biological communities requires knowledge of the factors driving the spatial patterns of the three diversity facets along extensive environmental gradients. We quantified the taxonomic (TD), functional (FD), and phylogenetic diversity (PD) of lichen epiphytic communities in 23 beech forests along Europe to examine their response to environmental variation (climate, habitat quality, spatial predictors) at a continental geographic scale. We selected six traits related to the climatic conditions in forest ecosystems, the water-use strategy and the nutrient uptake, and we built a phylogenetic tree based on four molecular markers. FD and climate determined TD and PD, with spatial variables also affecting PD. The three diversity facets were primarily shaped by distinct critical predictors, with the temperature diurnal range affecting FD and PD, and precipitation of the wettest month determining TD. Our results emphasize the value of FD for explaining part of TD and PD variation in lichen communities at a broad geographic scale, while highlighting that these diversity facets provide complementary information about the communities' response under changing environmental conditions. Furthermore, traits such as growth form, photobiont type, and reproductive strategy mediated the response of lichen communities to abiotic factors emerging as useful indicators of macroclimatic variations.

Published
2020
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42. Disentangling functional trait variation and covariation in epiphytic lichens along a continent-wide latitudinal gradient

Author

Hurtado, P., Prieto, M., Martinez-Vilalta, J., Giordani, P., Aragon, G., Lopez-Angulo, J., Kosuthova, A., Merinero, S., Diaz-Pena, E. M., Rosas, T., Benesperi, R., Bianchi, E., Grube, M., Mayrhofer, H., Nascimbene, J., Wedin, M., Westberg, Martin, Martinez, I, Hurtado, P., Prieto, M., Martinez-Vilalta, J., Giordani, P., Aragon, G., Lopez-Angulo, J., Kosuthova, A., Merinero, S., Diaz-Pena, E. M., Rosas, T., Benesperi, R., Bianchi, E., Grube, M., Mayrhofer, H., Nascimbene, J., Wedin, M., Westberg, Martin, and Martinez, I

Abstract

Characterizing functional trait variation and covariation, and its drivers, is critical to understand the response of species to changing environmental conditions. Evolutionary and environmental factors determine how traits vary among and within species at multiple scales. However, disentangling their relative contribution is challenging and a comprehensive trait-environment framework addressing such questions is missing in lichens. We investigated the variation in nine traits related to photosynthetic performance, water use and nutrient acquisition applying phylogenetic comparative analyses in lichen epiphytic communities on beech across Europe. These poikilohydric organisms offer a valuable model owing to their inherent limitations to buffer contrasting environmental conditions. Photobiont type and growth form captured differences in certain physiological traits whose variation was largely determined by evolutionary processes (i.e. phylogenetic history), although the intraspecific component was non-negligible. Seasonal temperature fluctuations also had an impact on trait variation, while nitrogen content depended on photobiont type rather than nitrogen deposition. The inconsistency of trait covariation among and within species prevented establishing major resource use strategies in lichens. However, we did identify a general pattern related to the water-use strategy. Thus, to robustly unveil lichen responses under different climatic scenarios, it is necessary to incorporate both among and within-species trait variation and covariation.

Published
2020
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47. Contrasting Environmental Drivers Determine Biodiversity Patterns in Epiphytic Lichen Communities along a European Gradient

Author

Hurtado, Pilar, primary, Prieto, María, additional, de Bello, Francesco, additional, Aragón, Gregorio, additional, López-Angulo, Jesús, additional, Giordani, Paolo, additional, Díaz-Peña, Eva María, additional, Vicente, Rebeca, additional, Merinero, Sonia, additional, Košuthová, Alica, additional, Benesperi, Renato, additional, Bianchi, Elisabetta, additional, Mayrhofer, Helmut, additional, Nascimbene, Juri, additional, Grube, Martin, additional, Wedin, Mats, additional, Westberg, Martin, additional, and Martínez, Isabel, additional

Published
2020
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48. Rostania revised : testing generic delimitations in Collemataceae (Peltigerales, Lecanoromycetes )

Author

Košuthová, Alica, Westberg, Martin, Otálora, Mónica A.G., Wedin, Mats, Košuthová, Alica, Westberg, Martin, Otálora, Mónica A.G., and Wedin, Mats

Abstract

Here, we test the current generic delimitation of Rostania (Collemataceae, Peltigerales, Ascomycota) utilizing molecular phylogeny and morphological investigations. Using DNA sequence data from the mitochondrial SSU rDNA and two nuclear protein-coding genes (MCM7 and β-tubulin) and utilizing parsimony, maximum likelihood and Bayesian phylogenetic methods, Rostania is shown to be non-monophyletic in the current sense. A new generic delimitation of Rostania is thus proposed, in which the genus is monophyletic, and three species (Rostania coccophylla, R. paramensis, R. quadrifida) are excluded and transferred to other genera. Rostania occultata is further non-monophyletic, and a more detailed investigation of species delimitations in Rostania s. str. is needed. The new combinations Leptogium paramense and Scytinium quadrifidum are proposed.

Published
2019
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49. The circumscription and phylogenetic position of Bryonora(Lecanoraceae, Ascomycota), with two additions to the genus

Author

Svensson, Måns, Haugan, Reidar, Timdal, Einar, Westberg, Martin, and Arup, Ulf

Abstract

ABSTRACTLecanoraceae is one of the largest families of the Lecanoromycetes, with about 30 accepted genera, many of which, however, have uncertain status and/or circumscriptions. We assess the phylogenetic position of the genus Bryonoraand its segregate Bryodinafor the first time, using a six-locus phylogeny comprising the Lecanoraceae as well as closely related families. We find strong support for the placement of Bryonorain the Lecanoraceae, whereas there is no support for treating Bryodinaas a genus separate from Bryonora. Hence, we reduce Bryodinato synonymy with Bryonora. Further, we describe Bryonora microlepisas new to science and transfer Lecanora castaneoidesto Bryonoraand L. vicariato Miriquidica. A world key to Bryonorais included.

Published
2022
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50. Draft genome sequence and annotation of the lichen-forming fungus Arthonia radiata

Author

Armstrong, Ellie E., Prost, Stefan, Ertz, Damien, Westberg, Martin, Frisch, Andreas, and Bendiksby, Mika

Subjects
stomatognathic diseases
Abstract

We report here the draft de novo genome assembly, transcriptome assembly, and annotation of the lichen-forming fungus Arthonia radiata (Pers.) Ach., the type species for Arthoniomycetes, a class of lichen-forming, lichenicolous, and saprobic Ascomycota. The genome was assembled using overlapping paired-end and mate pair libraries and sequenced on an Illumina HiSeq 2500 instrument.

Published
2018

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