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Molecular systematics supports the recognition of an additional order of Ascomycota: the Agyriales

Published online by Cambridge University Press:  20 February 2001

H. Thorsten LUMBSCH ,
Imke SCHMITT ,
Heidi DÖRING  and
Mats WEDIN
H. Thorsten LUMBSCH
Affiliation:
Botanisches Institut, Universität Essen, 45117 Essen, Germany
Imke SCHMITT
Affiliation:
Botanisches Institut, Universität Essen, 45117 Essen, Germany
Heidi DÖRING
Affiliation:
Department of Botany, The Natural History Museum, Cromwell Road, London SW7 5BD, UK. E-mail: [email protected] Present address: Lehrstuhl für Pflanzensystematik, Universität Bayreuth, 95447 Bayreuth, Germany.
Mats WEDIN
Affiliation:
Department of Botany, The Natural History Museum, Cromwell Road, London SW7 5BD, UK. E-mail: [email protected] Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden.
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Abstract

SSU rRNA gene sequences of Anamylopsora pulcherrima (Anamylopsoraceae), Placopsis gelida, Trapelia involuta and T. placodioides (Agyriaceae) were determined and aligned with the corresponding sequences of 39 other ascomycetes. Phylogenetic analysis (maximum parsimony, spectral analysis) of these sequences placed the Agyriineae outside the Lecanorales and suggested a sister group relationship to Ostropales/Pertusariales. The resurrection of the order Agyriales is proposed based on molecular and morphological data, such as faintly amyloid asci opening by dehiscence. The sequence data support the two families Agyriaceae and Anamylopsoraceae to be accommodated within the order Agyriales. The Agyriales, Ostropales and Pertusariales can be placed in the class Lecanoromycetes.

Type
Research Article
Information
Mycological Research , Volume 105 , Issue 1 , January 2001 , pp. 16 - 23
Copyright
© The British Mycological Society 2001

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