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Coenogonium nimisii – a new isidiate epiphytic lichen similar to Porina rosei

Published online by Cambridge University Press:  22 September 2023

Jiří Malíček*
Affiliation:
Institute of Botany of the Czech Academy of Sciences, CZ-252 43 Průhonice, Czech Republic
Brian Coppins
Affiliation:
Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, UK
Zdeněk Palice
Affiliation:
Institute of Botany of the Czech Academy of Sciences, CZ-252 43 Průhonice, Czech Republic
Lucie Vančurová
Affiliation:
Institute of Botany of the Czech Academy of Sciences, CZ-252 43 Průhonice, Czech Republic
Jan Vondrák
Affiliation:
Institute of Botany of the Czech Academy of Sciences, CZ-252 43 Průhonice, Czech Republic Faculty of Biological Sciences, University of South Bohemia, CZ-370 05 České Budějovice, Czech Republic
Neil Sanderson
Affiliation:
Green Close, Woodlands, Southampton SO40 7HU, UK
*
Corresponding author: Jiří Malíček; Email: jmalicek@seznam.cz

Abstract

Our floristic work in British ancient forests resulted in a description of a frequently reported but misidentified species, Coenogonium nimisii. Its thallus is very similar to Porina rosei, but the apothecia and pycnidia correspond with C. luteum. Sterile collections are not easy to distinguish but the new species differs from P. rosei in several microscopic characters of the isidia. Coenogonium nimisii is so far known from bark and epiphytic bryophytes, rarely mossy rocks, in ancient humid forests of Great Britain and Ireland. The genus Coenogonium is poorly represented by molecular data in the GenBank database. Our preliminary results revealed distinct genetic lineages within two traditionally circumscribed species, C. luteum and C. pineti, which may represent cryptic species.

Type
Standard Paper
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of the British Lichen Society

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