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Three new species, new combinations and a key to known species of Lobothallia (Megasporaceae)

Published online by Cambridge University Press:  21 August 2019

Alexander G. PAUKOV*
Affiliation:
Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russian Federation.
Evgeny A. DAVYDOV
Affiliation:
Altai State University – Herbarium (ALTB), Lenin Prosp. 61, Barnaul 656049, Russian Federation.
Anders NORDIN
Affiliation:
Museum of Evolution, Uppsala University, Uppsala, Sweden.
Claude ROUX
Affiliation:
390 Chemin des Vignes Vieilles, F-84120 Mirabeau, France.
Ayhan ŞENKARDEŞLER
Affiliation:
Department of Biology, Faculty of Science, Ege University, Bornova, Izmir 35100, Turkey.
Mohammad SOHRABI
Affiliation:
Iranian Research Organization for Science and Technology (IROST), Tehran, Iran.
Jan VONDRÁK
Affiliation:
Institute of Botany, Academy of Sciences, Zámek 1, Průhonice, CZ-25243, Czech Republic and Faculty of Science, University of South Bohemia, Branišovská 31, CZ-370 05, České Budějovice, Czech Republic.
Ivan V. FROLOV
Affiliation:
Botanical Garden, Russian Academy of Sciences, Ural Branch, Ekaterinburg, Russian Federation.
Anzhelika Yu. TEPTINA
Affiliation:
Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russian Federation.
Anna S. SHIRYAEVA
Affiliation:
Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russian Federation.
*
A. G. Paukov (corresponding author) Email: alexander_paukov@mail.ru

Abstract

Three species, Lobothallia brachyloba Paukov & I. V. Frolov, L. epiadelpha Paukov & A. Nordin and L. zogtii Paukov & Davydov, from arid regions of Eurasia (Russia, Kazakhstan, Kyrgyzstan, China and Mongolia) are described as new to science. Lobothallia brachyloba has flat, firmly attached lobes, immersed apothecia lacking a distinct thalline margin, and contains norstictic acid. Both Lobothallia epiadelpha and L. zogtii contain stictic acid and have a brown thallus and sessile apothecia. Lobothallia epiadelpha initially develops on crustose Circinaria spp, has thick lobes loosely attached to the substratum, and brown apothecial discs with constant thalline margins. Lobothallia zogtii is a free-living species with brownish black to jet black apothecial discs surrounded by a receding thalline margin. Lecanora bogdoënsis is synonymized with Lobothallia praeradiosa and Lobothallia helanensis is synonymized with L. subdiffracta. Three new combinations, Lobothallia hedinii (H. Magn.) Paukov, A. Nordin & Sohrabi, L. lacteola (Oxner) Şenkardeşler, Paukov, Davydov & Sohrabi, and L. subdiffracta (H. Magn.) Paukov, are proposed. Phylogenetic analyses of Lobothallia brachyloba, L. epiadelpha and L. subdiffracta (ITS, mtSSU) are presented, showing their relationships within Lobothallia. The lectotype of the name Aspicilia lacteola Oxner is designated. A key to 18 species of Lobothallia is provided.

Type
Articles
Copyright
Copyright © British Lichen Society 2019 

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