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Molecular data show that Topeliopsis (Ascomycota, Thelotremataceae) is polyphyletic

Published online by Cambridge University Press:  01 February 2008

Armin MANGOLD ,
María P. MARTÍN ,
Klaus KALB ,
Robert LÜCKING  and
H. Thorsten LUMBSCH
Armin MANGOLD
Affiliation:
The Field Museum, Department of Botany, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA. Email: tlumbsch@fieldmuseum.org Universität Duisburg-Essen, Botanisches Institut, Universitätsstraße 5, 45117 Essen, Germany
María P. MARTÍN
Affiliation:
Department of Mycology, Real Jardín Botánico, CSIC, Plaza de Murillo 2, 28014 Madrid, Spain
Klaus KALB
Affiliation:
University of Regensburg, Institute of Botany, D-93040 Regensburg, Germany
Robert LÜCKING
Affiliation:
The Field Museum, Department of Botany, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA. Email: tlumbsch@fieldmuseum.org
H. Thorsten LUMBSCH
Affiliation:
The Field Museum, Department of Botany, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA. Email: tlumbsch@fieldmuseum.org
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Abstract:

A phylogenetic study using DNA sequences of the nuclear ribosomal large subunit from 38 species is used to infer the phylogeny of species currently placed in Topeliopsis. The genus is shown to be polyphyletic; monophyly of previous and current circumscriptions of the genus are rejected using two alternative hypothesis tests. Topeliopsis meridiensis is shown to be closer to Chapsa than Topeliopsis, but additional studies are necessary to understand the circumscription of Chapsa. The new genus Melanotopelia Lumbsch & Mangold is described to accommodate T. toensbergii and T. rugosa. These species were previously regarded as aberrant in Topeliopsis because of their thin-walled ascospores and dark pigmented proper exciple. The new combination Graphis mexicana (Hale) Kalb, Lücking & Lumbsch is proposed and Graphis muscicola and Topeliopsis globosa reduced to synonymy with this species.

Keywords

GraphidaceaeMelanotopeliaOstropomycetidaephylogenetic analysis
Type
Research Article
Information
The Lichenologist , Volume 40 , Issue 1 , January 2008 , pp. 39 - 46
Copyright
Copyright © British Lichen Society 2008

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