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Chaenothecopsis inconspicua, a new sporodochioid lichenicolous fungus growing on Lecanora expallens

Published online by Cambridge University Press:  21 May 2025

Henk-Jan van der Kolk Open the ORCID record for Henk-Jan van der Kolk [Opens in a new window] ,
Damien Ertz Open the ORCID record for Damien Ertz [Opens in a new window] ,
Bart Hessen  and
Jannes Boers
Henk-Jan van der Kolk*
Affiliation:
Dutch Bryological and Lichenological Association, Utrecht, The Netherlands
Damien Ertz
Affiliation:
Meise Botanic Garden, Department Research, BE-1860 Meise, Belgium Fédération Wallonie-Bruxelles, Service général de l’Enseignement supérieur et de la Recherche scientifique, BE-1080 Bruxelles, Belgium
Bart Hessen
Affiliation:
Heideweg 10, 9824 TJ Noordwijk (GR), The Netherlands
Jannes Boers
Affiliation:
Dutch Bryological and Lichenological Association, Utrecht, The Netherlands
*
Corresponding author: Henk-Jan van der Kolk; Email: henk-janvdkolk@hotmail.com
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Abstract

Chaenothecopsis inconspicua is a new anamorphic lichenicolous fungus forming black sporodochia on the thallus of Lecanora expallens. Molecular analysis demonstrates that the new species is positioned in the Mycocaliciales. Although a remarkable diversity of anamorphs was already recognized in Mycocaliciales, it is the first species within this order known to produce sporodochioid conidiomata. Chaenothecopsis inconspicua is currently known from several localities in the northern half of the Netherlands, most often on old Quercus robur trees in villages. A key to the lichenicolous fungi inhabiting Lecanora expallens is provided.

Keywords

anamorphAscomycotadiversitytaxonomyThe Netherlands

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Type
Standard Paper
Information
The Lichenologist , Volume 57 , Issue 2 , March 2025 , pp. 82 - 90
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Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of the British Lichen Society

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