Phylogeny of the European Collema species (Peltigerales, Lecanoromycetes)

By

Kosuthova, Alica
Jonsson, Fredrik
Nordin, Ulrika
Wedin, Mats

Type

Article

Date of Publication

2025

Original Publication

MycoKeys

Volume

115

Pages

209--220

Subjects

Ascomycota , Collemataceae , Cyanolichens , integrative taxonomy , systematics

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.115.144718

 

Abstract

The phylogenetic relationships and morphological diversity within European Collema s. str. species were investigated. A total of 104 new sequences (four molecular markers; mtSSU, b-tub, MCM7, and RPB2 genes) from 28 specimens were generated, and analysed and used for multi-locus phylogenetic analyses. Our results suggest that Collema is only monophyletic if Collema glebulentum is considered part of Leptogiums. str. where it originally was described. This is supported by its paraplectenchymatous thallus. Degelius´ informal Collema “Flaccidum”- and “Nigrescens”-groups are not natural, as the “Flaccidum”-group is nested within the “Nigrescens”-group. Based on our findings, seven currently accepted Collema occur in Europe: C. flaccidum, C. subflaccidum, C. curtisporum, C. furfuraceum, C. nigrescens, C. ryssoleum, and C. subnigrescens. Collema furfuraceum is further non-monophyletic, suggesting a need for taxonomic revision.