The current view of the geographical ranges of lichens is often distorted by overly narrow or overly broad applications of names and by insufficient survey of most regions of the world. Here we present several cases where species ofTeloschistaceaeformerly thought to be limited to rather small territories in the western or eastern parts of Eurasia are in fact widespread in northern Eurasia. We support our findings with ITS nrDNA data in several new trees showing relationships in the generaAthallia,Calogaya,Caloplaca,FlavoplacaandGyalolechia. The widespread species have little in common, except that most of them reproduce both sexually and asexually, and we discuss the possible influence of the combined reproduction on geographical range.Calogaya bryochrysion,Calogaya saxicola,Gyalolechia epiphytaandGyalolechia ussuriensisare new combinations.Calogaya alaskensisis a younger synonym forC. bryochrysion. The generally arctic-alpineCalogaya bryochrysionalso occurs on the bark of solitary trees in dry parts of the Altai Mountains. The AustralianFlavoplaca cranfieldiiis a younger synonym ofF. flavocitrina.Gyalolechia epiphytahas been described numerous times, from different regions and substrata, asCaloplaca juniperi,C. laricina,C. tarani,Gyalolechia arizonicaandG. juniperina. The nameGyalolechia xanthostigmoideahas recently been used forG. epiphyta, but it represents a distinct taxon.Gyalolechia ussuriensisis closely related to and morphologically indistinguishable fromG. persimilis, but they have a different ecology and distribution and we regard them as distinct species.Caloplaca juniperinaTomin is lectotypified.

Motiejūnaitė, J., Chesnokov, S. V., Czarnota, P., Gagarina, L.V., Frolov, I., Himelbrant, D., Konoreva, L. A., Kubiak, D., Kukwa, M., Moisejevs, R., Stepanchikova, I., Suija, A., Tagirdzhanova, G., Thell, A. & Tsurykau, A. 2016. Ninety-one species of lichens and allied fungi new to Latvia with a list of additional records from Kurzeme. — Herzogia 29: 143–163. The results of lichenological excursions of the 19th Symposium of Baltic Mycologists and Lichenologists (BMLS) in Latvia, Kurzeme region, 22–26 September 2014, are reported. A list of 290 species is presented, of which 238 are lichenized, 43 lichen-inhabiting, and nine saprotrophic fungi: ninety-one species are new to Latvia, twelve of which (Caloplaca duplicata, Cresporhaphis wienkampii, Ellisembia lichenicola, Gallowayella weberi, Gregorella humida, Lichenochora weillii, Parmelia serrana, Polycauliona phlogina, Reconditella physconiarum, Stictis brunnescens, Thelocarpon superellum, and Verrucaria tectorum) are also new for the Baltic Stat... Zusammenfassung: Motiejūnaitė, J., Chesnokov, S. V., Czarnota, P., Gagarina, L.V., Frolov, I., Himelbrant, D., Konoreva, L. A., Kubiak, D., Kukwa, M., Moisejevs, R., Stepanchikova, I., Suija, A., Tagirdzhanova, G., Thell, A. & Tsurykau, A. 2016. Einundneunzig Flechten, flechtenbewohnende und flechtenähnliche Pilze neu für Lettland, mit einer Liste weiterer Funde aus Kurland. — Herzogia 29: 143–163. Die Ergebnisse der lichenologischen Exkursionen im Rahmen des 19. Symposiums Baltischer Mykologen und Lichenologen (BMLS) in Kurland (Lettland) vom 22.–26. September 2014 werden vorgestellt. Die Liste umfaßt 290 Arten, darunter 238 Flechten, 43 flechtenbewohnende und 9 saprophytische Pilze. 91 Arten sind neu für Lettland, darunter sind 12 (Caloplaca duplicata, Cresporhaphis wienkampii, Ellisembia lichenicola, Gallowayella weberi, Gregorella humida, Lichenochora weillii, Parmelia serrana, Polycauliona phlogina, Reconditella physconiarum, Stictis brunnescens, Thelocarpon superellum und Verrucaria tectorum) neu fü...

Konoreva, L., Tchabanenko, S., Ezhkin, A., Schumm, F. & Chesnokov, S. 2018. New and noteworthy lichen and allied fungi records from Sakhalin Island, Far East of Russia. – Herzogia 31: 276–292. Lecanora loekoesii and Chrysothrix xanthina are reported for the first time for Russia from the Sakhalin region. Bactrospora brodoi is new for Asia. A further forty-eight species are noteworthy for Sakhalin Island including five species new to the Russian Far East and ten species new to the southern part of the Russian Far East. Zusammenfassung: Konoreva, L., Tchabanenko, S., Ezhkin, A., Schumm, F. & Chesnokov, S. 2018. Neue und interessante Funde von Flechten und flechtenähnlichen Pilzen von der Insel Sachalin, Ferner Osten Russlands. – Herzogia 31: 276–292. Lecanora loekoesii und Chrysothrix xanthina werden zum ersten Mal für Russland aus der Sachalinregion gemeldet. Neu ist ferner für Asien Bactrospora brodoi. Weiterhin werden achtundvierzig bemerkenswerte Flechtenarten für die Insel Sachalin angegeben, von denen fünf Arten neu für das fernöstliche Russland und zehn neu für dessen Südteil sind.

We present a lichen checklist for the northern shore of the Gulf of Finland in the limits of St. Petersburg, Russia. This area has diverse lichen biota within the city limits, and has been comprehensively studied since 1893, which gives a good base for analysis of historical changes in lichen diversity. The documented lichen biota comprises 469 species (430 lichenized, 24 lichenicolous, 3 facultatively lichenicolous, and 12 non-lichenized saprobic fungi), of them 191 species are known from herbaria and literature for the period before 1991, and 436 species were recorded since 1991 to 2019. Thirty-three taxa were excluded from the lichen list of the study area as erroneous or dubious records. Altogether 48 species are new to St. Petersburg, including: Lecidea malmeana and Micarea czarnotae – new to Russia; Caloplaca lucifuga, Gyalecta nigricans, Micarea soralifera – new to European Russia; Agonimia flabelliformis, Endococcus verrucosus, Lecania turicensis, Micarea fallax, M. tomentosa, Xanthomendoza huculica – new to Northwestern European Russia; Lichenoconium lichenicola, Ramalina europaea, Sarcogyne hypophaea – not known also from the Leningrad Region. The studied lichen biota is moderately rich compared to other city territories. The history of economic development of the region has caused its serious transformation, degradation of natural habitats and therefore partial loss of lichen diversity. At the same time, human-made substrates and anthropogenic plant communities are inhabited by lichens, including species unknown in the natural habitats of the study area. However, 44 species recorded in the study area are red-listed in St. Petersburg, with 13 of them known only from historical collections. Forest communities, as well as historical parks, in NW part of St. Petersburg are important source of biodiversity on regional level nowadays and hopefully in future, and deserve protection.

Yakovchenko, L., Davydov, E. A., Paukov, A., Konoreva, L., Chesnokov, S. & Ohmura, Y. 2020. New records of arctic-alpine lichens from the Russian Far East. – Herzogia 33: 455 – 472.New localities are given for 19 lichen species from the Russian Far East. Aspicilia asteria and A. umbrinella are reported for Russia for the first time. Buellia lacteoidea, B. ocellata, Dermatocarpon polyphyllizum, Lecanora reagens, and Miriquidica pycnocarpa are newly reported for the Russian Far East. Buellia lacteoidea is reported for the second time from Eurasia and Russia. Lecanora argentea, Lecidea promiscua, Miriquidica leucophaea, Placopsis cribellans, Rhizocarpon saanaёnse and Rimularia badioatra are recorded for the first time for the southern Far East. Rhizocarpon polycarpum is a new species for Primorye Territory, and Acarospora veronensis and Rimularia limborina are new for Sakhalin. Lecanora gangaleoides, Umbilicaria hyperborea, and U. herrei are confirmed for Sakhalin. Characteristic features of the species, including those that distinguish them from their closest relatives, and species' distribution and ranges are described. Aspicilia pseudovulcanica S.Y.Kondr. et al. is synonymized with A. asteria Hue, and A. submamillata S.Y.Kondr. et al. is synonymized with A. umbrinella Hue.

Sixty three species of lichenicolous and allied fungi are reported, 47 of which are new to Trans-Baikal Territory of Russia. A presumably undescribed Llimoniella-like discomycete on Protoblastenia terricola is illustrated and discussed. Plectocarpon melanohaleae is first recorded in the northern hemisphere. Diplolaeviopsis ranula, Endococcus alectoriae, E. verrucisporus, Epigloea filifera, Sagediopsis fissurisedens and Talpapellis peltigerae var. peltigerae are new to Russia and Asia. Endococcus macrosporus is new to Russia. Lichenostigma rupicolae, Opegrapha geographicola and Unguiculariopsis lettaui are new to Siberia. Arthonia molendoi, Dactylospora glaucomarioides, Didymocyrtis consimilis, Epibryon conductrix, Muellerella lichenicola, Phaeospora cf. rimosicola, Sagediopsis aspiciliae, S. pertusariicola, Sphaerellothecium contextum, Stigmidium conspurcans, S. mitchellii, S. solorinarium and Talpapellis peltigerae are new to South Siberia. Cercidospora thamnoliae and Sagediopsis pertusariicola are first reported outside the Arctic. Athallia is a new host genus for Didymocyrtis consimilis and Bryoria for Endococcus alectoriae. The following new host species are registered: Pertusaria geminipara for Dactylospora deminuta, Calvitimela talayana for Endococcus propinquus s. l., Bryoria simplicior for Lichenostigma maureri and Melanohalea olivacea for Plectocarpon melanohaleae.