Micarea is a lichenized genus in the family Pilocarpaceae (Ascomycota). We studied the phylogeny and reassessed the current taxonomy of the M. prasina group. We focused especially on the taxonomic questions concerning the type species M. prasina and, furthermore, challenges concerning type specimens that are too old for successful DNA barcoding and molecular studies. The phylogeny was reconstructed using nuc rDNA internal transcribed spacer region (ITS1-5.8S-ITS2 = ITS), mitochrondrial rDNA small subunit (mtSSU), and replication licensing factor MCM7 gene from 31 species. Fifty-six new sequences were generated. The data were analyzed using maximum parsimony and maximum likelihood methods. The results revealed four undescribed, well-supported lineages. Three lineages represent new species described here as M. fallax, M. flavoleprosa, and M. pusilla. In addition, our results support the recognition of M. melanobola as a distinct species. Micarea fallax is characterized by a vivid to olive green thallus composed of aggregated granules and whitish or brownish apothecia sometimes with grayish tinge (Sedifolia-gray pigment).Micarea flavoleprosa has a thick, wide-spreading yellowish green, whitish green to olive green sorediate thallus and lacks the Sedifolia-gray pigmentation. The species is mostly anamorphic, developing apothecia rarely. Micarea melanobola is characterized by a pale to dark vivid green granular thallus and darkly pigmented apothecia (Sedifolia-gray). Micarea pusilla is characterized by a whitish green to olive green thinly granular or membranous thallus, numerous and very small whitish apothecia lacking the Sedifolia-gray pigment, and by the production of methoxymicareic acid. Micarea fallax, M. flavoleprosa, and M. melanobola produce micareic acid. The reliability of crystalline granules as a character for species delimitation was investigated and was highly informative for linking the old type specimen of M. prasina to fresh material.

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...

The new lichenicolous fungusCapronia suijaegrowing on the thallus of corticolousXanthoria parietinais described from Belarus and compared with similar species. In addition to its host selection, the species is characterized by comparatively small ascomata, 40–80 μm diam., and (0–1–)3-septate ascospores, 9·5–11·5×4·0–5·0 μm. A key to the lichenicolous fungi growing onXanthorias. str. is provided.

Thirteen species and one variety of lichens, nine lichenicolous and two saprobic fungi are reported for the first time for St. Petersburg, the whole Leningrad Region or its western or eastern parts. The lichens Bacidina brandii, B. neosquamulosa, Porina leptalea, Rinodina aspersa and the lichenicolous fungus Scutula dedicata are reported for the first time for Russia, lichenicolous fungus Lichenoconium aeruginosum – for European Russia, the lichen Tetramelas chloroleucus, lichenicolous fungi Lichenoconium pyxidatae and Tremella cetrariicola are new for the North-Western European Russia. The most interesting records are briefly discussed.

Knudsen, K., Urbanavichus, G., Hodková, E., Tsurykau, A. & Kocourková, J. 2022. Acarospora schorica is a Trimmatothelopsis. – Herzogia 35: 467– 474. Acarospora schorica is the oldest name for Trimmatothelopsis sphaerosperma and has priority. The new combination Trimmatothelopsis schorica is proposed. The species is recognized as occurring in Asia, Europe, and North America. Phylogenetic analysis of sequence data verifies its placement in the genus Trimmatothelopsis. Knudsen, K., Urbanavichus, G., Hodková, E., Tsurykau, A. & Kocourková, J. 2022. Acarospora schorica gehört zu Trimmatothelopsis. – Herzogia 35: 467– 474. Acarospora schorica ist der älteste Name für Trimmatothelopsis sphaerosperma and hat daher Priorität. Die Umkombination Trimmatothelopsis schorica wird vorgeschlagen. Die Art kommt in Asien, Europa und Nordamerika vor. Die Stellung der Art in der Gattung Trimmatothelopsis wird molekularphylogenetisch bestätigt.

Two hundred and ten specimens of Cetrelia collected in Belarus in 1954-2012 were examined based on morphological and chemical characters. Three closely related species of Cetrelia (C. cetrarioides, C. monachorum and C. olivetorum) were identified in this study. The ecological notes and distribution maps of the detected species in Belarus were provided and their conservation status was discussed.