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The systematic position of Lasallia caroliniana (Tuck.) Davydov, Peršoh & Rambold comb. nova and considerations on the generic concept of Lasallia (Umbilicariaceae, Ascomycota)

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Abstract

Detailed morphological investigations and phylogenetic analyses of the ITS/5.8S nrDNA reveal Umbilicaria caroliniana to be a member of Lasallia. A new combination, Lasallia caroliniana (Tuck.) Davydov, Peršoh & Rambold comb. nov., is proposed. The circumscription of Lasallia is extended by the character state of eight-spored asci. According to the new concept, Lasallia is distinguished from Umbilicaria by comprising species which combine large, multicellular, brown ascospores and a pustulate thallus. The functionally significant differences in ascospore morphology justify the current division of Umbilicariaceae into Lasallia and Umbilicaria, although Umbilicaria remains paraphyletic.

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Acknowledgements

We thank the curators of FH, LE, VLA, and PIG RAS for the loan of material, and the colleagues, who kindly provided additional specimens. John A. Elix (Canberra) is thanked for correcting the English and Christina Leistner (Bayreuth) for assistance with the laboratory work. The first author was supported by DAAD (German Academic Exchange Service) no. A/03/01054, by the Grants of President of Russian Federation no. MK 5671.2006.4, and of Russian Foundation of Basic Research no. 07-04-90800 and no. 09-04-90703.

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Authors and Affiliations

  1. Herbarium (ALTB), Altai State University, Lenin Ave. 61, Barnaul, 656049, Russia

    Evgeny A. Davydov

  2. Department of Mycology, University of Bayreuth, Universitätsstraße 30, 95540, Bayreuth, Germany

    Derek Peršoh & Gerhard Rambold

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  1. Evgeny A. Davydov
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  2. Derek Peršoh
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  3. Gerhard Rambold
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Correspondence to Evgeny A. Davydov.

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Davydov, E.A., Peršoh, D. & Rambold, G. The systematic position of Lasallia caroliniana (Tuck.) Davydov, Peršoh & Rambold comb. nova and considerations on the generic concept of Lasallia (Umbilicariaceae, Ascomycota). Mycol Progress 9, 261–266 (2010). https://doi.org/10.1007/s11557-009-0636-y

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  • DOI: https://doi.org/10.1007/s11557-009-0636-y

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