| Abstrakt: |
Odontotremataceae is polyphyletic and constitutes two distantly related clades, the true Odontotremataceae and a segregate group within Stictidaceae including “Odontotrema” cassiopes, “O.” diffindens, lichenicolous “Odontotrema” species and “Bryodiscus” arctoalpinus. Sphaeropeziahere is accepted as the name for this latter group. An updated phylogeny of the Stictidaceae based on mtSSU, nuLSU and the protein coding gene RPB2is presented together with a taxonomic revision of Swedish taxa of Odontotremaand Sphaeropezia. Bryodiscusand Lethariicolaare synonymized under Sphaeropezia, and three new Sphaeropeziaspecies are described: the lignicolous S. capreae, the fungicolous S. lyckselensisand the lichenicolous S. mycoblasti. The new species are distinguished from other species by molecular and morphological characters, and substrate preferences. The new combinations Sphaeropezia arctoalpina, S. cassiopes, S. grimmiae, S. hepaticarum, S. melaneliae, S. ochrolechiaeand S. thamnoliaeare proposed. The morphology of these species was studied in detail. We further propose to combine the remaining lichenicolous Odontotremaspecies, exept O. stereocaulicola, in Sphaeropeziabased on their close relationship to the studied lichenicolous taxa. These additional new combinations include Sphaeropezia bryoriae, S. cucularis, S. figulina, S. intermedia, S. japewiae, S. lecanorae, S. navarinoi, S. pertusariae, S. rhizocarpicola, S. santessonii, and S. sipei. A lectotype is designated for the name Odontotrema diffindensNyl. |
