uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
The main genera of Verrucariaceae (Ascomycota) as supported by recent morphological and molecular studies.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolution, Genomics and Systematics, Systematic Botany.
Show others and affiliations
(English)In: TaxonArticle in journal (Refereed) Submitted
URN: urn:nbn:se:uu:diva-96492OAI: oai:DiVA.org:uu-96492DiVA: diva2:171081
Available from: 2007-11-22 Created: 2007-11-22 Last updated: 2014-12-06Bibliographically approved
In thesis
1. Phylogeny and Taxonomy of Polyblastia and allied taxa (Verrucariaceae)
Open this publication in new window or tab >>Phylogeny and Taxonomy of Polyblastia and allied taxa (Verrucariaceae)
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Polyblastia A. Massal. is a genus of lichenized fungi belonging to Verrucariaceae (Ascomycota). Traditional classification heavily rested on a few cardinal characters, primarily ascoma structure and spore morphology, but the delimitation of Polyblastia was problematic. Using DNA sequences from nucLSU, and RPB1 the position of the ‘Polyblastia group’, as a strongly supported clade within Verrucariaceae, was confirmed. A three marker phylogeny (including nucITS) based on a wide taxon sampling reveals strongly supported clades within the ‘Polyblastia group’. Thus Polyblastia s.str. is recognized. The phylogeny of the strongly supported Thelidium clade is not completely resolved. In a different clade, Verrucaria rupestris, the type of Verrucaria, is a sister to the Henrica melaspora/H. theleodes clade. Trimmatothele perquisita, the type of Trimmatothele, forms a strongly supported group with a Verrucaria species. The genus Sporodictyon, until recently included in Polyblastia, is resurrected.

Species delimitation in Sporodictyon is investigated, and the morphological variation within and between the monophyletic groups is evaluated in an effort to reconcile morphological and molecular data. A taxonomic revision of Sporodictyon, occurring in Northern Europe and the adjacent Arctic is provided, and two new species are described. A comprehensive material is investigated, a key to the species is provided.

A generic revision of the family Verrucariaceae, based on recent molecular phylogenetic analyses and previous morphological studies, is offered. Three new genera (Hydropunctaria, Parabagliettoa and Wahlenbergiella) are proposed. Several other monophyletic groups are identified for which the taxon sampling is insufficient for proposing taxonomic changes. The nomenclature of the genera in the family is revised, including the study of type materials and several lectotypifications are suggested.

The new genus Atla (Verrucariaceae) is described, and three new species to science, A. alpina, A. palicei and A. praetermissa, are included. An identification key to the species and a revision of the genus is supplied.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2007. 33 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 370
Biology, Phylogeny, Taxonomy, ITS, LSU, RPB1, Nomenclature, Biologi, Polyblastia, Verrucariaceae, Sporodictyon, Atla, Thelidium, Verrucaria, Staurothele, Trimmatothele
urn:nbn:se:uu:diva-8326 (URN)978-91-554-7035-7 (ISBN)
Public defence
2007-12-14, Lindahlsalen, EBC, Norbyvägen 18A, Uppsala, 10:00 (English)
Available from: 2007-11-22 Created: 2007-11-22 Last updated: 2009-04-02Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Tibell, Leif
By organisation
Systematic Botany

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 257 hits
ReferencesLink to record
Permanent link

Direct link