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Opegrapha multipuncta and Schismatomma quercicola (Arthoniomycetes) belong to the Lecanoromycetes

Published online by Cambridge University Press:  04 November 2019

Damien ERTZ
Research Department, Meise Botanic Garden, Nieuwelaan 38, B-1860 Meise, Belgium; and Fédération Wallonie-Bruxelles, Direction Générale de l'Enseignement non obligatoire et de la Recherche scientifique, Rue A. Lavallée 1, B-1080 Bruxelles, Belgium. Email:
3 Green Close, Woodlands, Southampton, SO40 7HU, UK.
Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh EH3 5LR, UK.
BioFokus, Gaustadalléen 21, NO-0349 Oslo, Norway.
Andreas FRISCH
NTNU University Museum, Erling Skakkes Gate 47A, NO-7012 Trondheim, Norway.


Opegrapha multipuncta and Schismatomma quercicola are two sterile European lichens reproducing only vegetatively by means of soredia. RAxML and Bayesian analyses of newly generated sequence data from the mitochondrial ribosomal RNA small subunit provide clear evidence that these two species do not belong to the Arthoniomycetes, but to the Lecanoromycetes. In our phylogenetic analyses, O. multipuncta is nested in the genus Porina (Porinaceae) as sister to P. austroatlantica, while S. quercicola is nested in the genus Schizotrema (Graphidaceae) as sister to S. zebrinum. The following new combinations are introduced: Porina multipuncta (Coppins & P. James) Ertz, Coppins & Frisch and Schizotrema quercicola (Coppins & P. James) Ertz, Frisch & Sanderson. Schizotrema quercicola represents the first record of the genus Schizotrema for Europe and the first sorediate member in this genus. The species is newly recorded from Norway. The lichenicolous habit of Arthonia invadens is confirmed.

Copyright © British Lichen Society 2019 

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