Article (Scientific journals)
Global phylogeny and taxonomic reassessment of the lichen genus Dendriscosticta (Ascomycota: Peltigerales)
Simon, Antoine; Goffinet, Bernard; Wang, Li Song et al.
2022In Taxon
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Abstract :
[en] The genus Dendriscosticta (Ascomycota: Peltigerales) encompasses several distinctive lichen-forming fungal species restricted to the Northern Hemisphere. Most are flagship species of old-growth forests with good air quality. A global phylogeny of the genus based on multilocus sequence data (ITS, RPB1, EF-1α, MCM7), model-based phylogenetic methods, and morphological and chemical assessments, reveals a high level of cryptic speciation often associated with restricted geographical distribution and/or chemical characters. Using sequence-based species delimitation approaches, we circumscribe two main clades referred to as the D. wrightii clade, with five unequivocal species, including D. gelida sp. nov., and the D. praetextata clade, with eight putative species, including D. phyllidiata sp. nov. The absence of recently collected material of D. hookeri comb. nov. from the type locality unfortunately prevents assignment of this epithet to one of the five supported lineages sharing this morphotype. Three new combinations are proposed: D. hookeri, D. insinuans comb. nov. and D. yatabeana comb. nov. Epitypes are designated for D. wrightii and D. yatabeana. Species diversity within the genus increased from four to nine. Our morphological assessment confirmed that Sticta and Dendriscosticta can be readily distinguished by the presence of excipular algae whereas the structure of the lower surface pores is not a reliable diagnostic feature.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Simon, Antoine ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie de l'évolution et gestion de la biodiversité
Goffinet, Bernard
Wang, Li Song
Spribille, Toby
Goward, Trevor
Pystina, Tatiana
Semenova, Natalia
Stepanov, Nikolay V.
Moncada, Bibiana
Lücking, Robert
Magain, Nicolas  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie de l'évolution et gestion de la biodiversité
Sérusiaux, Emmanuël ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie de l'évolution et gestion de la biodiversité
Language :
English
Title :
Global phylogeny and taxonomic reassessment of the lichen genus Dendriscosticta (Ascomycota: Peltigerales)
Publication date :
2022
Journal title :
Taxon
ISSN :
0040-0262
eISSN :
1996-8175
Publisher :
International Association for Plant Taxonomy, Austria
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 January 2022

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