New Entities in Physcia aipolia—P. caesia Group (Physciaceae, Ascomycetes): An Analysis Based on mtSSU, ITS, Group I Intron and Betatubulin Sequences

Katileena Lohtander; Leena Myllys; Mari Källersjö; Roland Moberg; Soili Stenroos; Anders Tehler

doi:10.5735/085.046.0104

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Katileena Lohtander,¹ Leena Myllys,¹ Mari Källersjö,² Roland Moberg,³ Soili Stenroos,¹ Anders Tehler⁴

¹1)Botanical Museum, Finnish Museum of Natural History, P.O. Box 7, FI-00014 University of Helsinki,
²2)Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden
³3)The Botany Section, Museum of Evolution, Norbyvägen 16, SE-752 36 Uppsala, Sweden
⁴4)Department of Cryptogamic Botany, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Sto

Abstract

We have revisited the phylogenetic evaluation of the Physcia aipolia—P. caesia lichen group (sect. Caesiae; Physciaceae, Lecanorales) in order to investigate whether new sequence data and extensive sampling can help us to understand the phylogenetic relationships in that group. We combined partial mtSSU DNA data with two previously used nuclear gene regions (betatubulin, ITS) and a group I intron. We also compared the resulting phylogenies with chemical and morphological characters. Altogether 52 specimens of the P. aipolia—P. caesia group were analysed. Direct optimization of the molecular data revealed several well-supported groups. Our results essentially agreed with those of the earlier studies, and we were able to confirm the independent taxonomic status of some controversial morphotaxa. We also discovered at least two distinct clades that potentially represent species new to science. A new nomenclatural combination, Physcia alnophila (Vain.) Loht., Moberg, Myllys & Tehler, is proposed.

Citation Download Citation

Katileena Lohtander, Leena Myllys, Mari Källersjö, Roland Moberg, Soili Stenroos, and Anders Tehler "New Entities in Physcia aipolia—P. caesia Group (Physciaceae, Ascomycetes): An Analysis Based on mtSSU, ITS, Group I Intron and Betatubulin Sequences," Annales Botanici Fennici 46(1), 43-53, (1 February 2009). https://doi.org/10.5735/085.046.0104

Received: 13 March 2008; Accepted: 1 May 2008; Published: 1 February 2009

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