Siri Rui

• Timdal, Einar & Rui, Siri (2024). Contributions to the lichen flora of the province of Alberta, Canada, with the description of two new species and revised status for the subspecies of Toninia tristis. Opuscula Philolichenum. ISSN 1941-7519. 23, p. 33–81. Full text in Research Archive
• Marthinsen, Gunnhild; Rui, Siri & Timdal, Einar (2019). OLICH: A reference library of DNA barcodes for Nordic Lichens. Biodiversity Data Journal. ISSN 1314-2836. 7(e36252), p. 1–146. doi: 10.3897/bdj.7.e36252. Full text in Research Archive Show summary

  Background DNA barcodes are increasingly being used for species identification amongst the lichenised fungi. This paper presents a dataset aiming to provide an authoritative DNA barcode sequence library for a wide array of Nordic lichens. New information We present 1324 DNA barcode sequences (nrITS) for 507 species in 175 genera and 25 orders. Thirty-eight species are new to GenBank and, for 25 additional species, ITS sequences are here presented for the first time. The dataset covers 20–21% of the Nordic lichenised species. Barcode gap analyses are given and discussed for the three genera Cladonia, Ramalina and Umbilicaria. The new combination Bryobilimbia fissuriseda (Poelt) Timdal, Marthinsen & Rui is proposed for Mycobilimbia fissuriseda and Nordic material of the species, currently referred to as Pseudocyphellaria crocata and Psoroma tenue ssp. boreale, are shown to belong in Pseudocyphellaria citrina and Psoroma cinnamomeum, respectively.

View all works in NVA

• Timdal, Einar; Rui, Siri & Bjorå, Charlotte Sletten (2024). Kassevis med lav skal tilbake dit den kom fra. [Internet]. Titan.uio.no. Full text in Research Archive
• Høiland, Klaus; Ryvarden, Leif & Rui, Siri (2019). Hva kan vi lære av sopp? Full text in Research Archive
• Haugan, Reidar; Timdal, Einar; Frisch, Andreas; Rui, Siri & Bendiksby, Mika (2016). Miriquidica – yet another non-monophyletic lichen genus rich in cryptic species. Full text in Research Archive Show summary

  Background: Miriquidica Hertel & Rambold comprises about 30 saxicolous, mainly alpine species worldwide. The genus was originally delimited by the presence of miriquidic acid in most of the species and by asci of the “Lecanora-type”. The species are often difficult to identify without chemical and microscopical investigations. Although they are common rock lichens in some regions in the Northern Hemisphere, many Miriquidica species remain poorly understood. Material and Methods: We have collected Miriquidica extensively throughout Fennoscandia, over wide climatic, geographical and ecological gradients. We studied this, and additional material of available Miriquidica species and presumed close relatives, using TLC, microscopy, and multi-locus DNA-sequencing. We have compiled a dataset with 187 accessions representing specimens collected as Miriquidica, their presumed close relatives, and appropriate outgroups. Some sequences were downloaded from genbank (mainly from Singh et al. 2013). The molecular work was undertaken as described in Bendiksby et al. (2013). A partitioned concatenated dataset of one mitochondrial (mtSSU) and two nuclear genetic regions (ITS and MCM7) was analysed phylogenetically using Maximum likelihood (ML) on the CIPRES Science Gateway (Miller et al. 2010). For the ML analysis, we used the RAxML-HPC black box with rapid bootstrapping and full ML analysis under the GTR+GAMMA approximation. Results: We have discovered several new species, many of them so-called cryptic and Miriquidica hence falls into the line of crustose genera showing a high degree of cryptic speciation (Fig. 1). Our results also show that Miriquidica, as currently circumscribed, is polyphyletic, i.e. one species (M. pycnocarpa) is extraneous in the genus. After its removal from Miriquidica, the genus remains paraphyletic, with species of Protoparmelia (cfr. Singh et al. 2013), Lecanora, Lecidea s.lat., and Myochroidea nested. We recognize several new species, of which we include two in Fig. 1 (M. scoriae and M. ymei), and recombine 11 others.

• Haugan, Reidar; Bendiksby, Mika; Rui, Siri & Timdal, Einar (2014). Molecular phylogeny and taxonomy of the lichen genus Miriquidica (Ascomycota, Lecanoraceae). Full text in Research Archive Show summary

  The lichen genus Miriquidica (Hertel & Rambold 1987) comprises about 30 saxicolous species worldwide. Its phylogeny remains unknown and several unknown/undescribed species may occur. Many Miriquidica species are difficult to identify without careful chemical (TLC) and microscope investigation. The genus was originally delimited by the presence of miriquidic acid (not all species) and anatomical characters of the apothecia, including asci of the “Lecanora-type”. Although Miriquidica species are not uncommon in alpine areas, and in some areas (e.g. in the mesotrophic Fennoscandian mountains) they represent a substantial part of the crustose lichen flora on rocks, the genus remains poorly represented in herbaria worldwide. We have collected Miriquidica species systematically throughout Norway, representing wide climatic, geographical and ecological gradients, and determined/studied this material through a combinations of different approaches (TLC, microscopy, DNA-sequencing). Our molecular phylogeny of the genus include multiple accessions of all available species as well as extra-Norwegian material. Most Miriquidica species will remain in a monophyletically circumscribed Miriquidica. Some Miriquidica species, however, are clearly extraneous in the genus, and a few species of Lecanora and Lecidea s.lat. belong in Miriquidica. Several new species are described and an extensive amount of phenotypically cryptic species have so far been discovered.

• Haugan, Reidar; Bendiksby, Mika; Rui, Siri & Timdal, Einar (2013). Molecular phylogeny and taxonomy of the lichen genus Miriquidica (Ascomycota, Lecanoraceae). Full text in Research Archive Show summary

  During the years 2010-2012 , the authors participated in the species-project Mapping of Norwegian Lecideoid lichens, funded by the Norwegian Biodiversity Information Centre. Results of the project are presented on the internet (species descriptions, pictures, and distribution data; http://nhm2.uio.no/botanisk/lav/LAVFLORA/LECIDEOID.HTM) and as research articles addressing species-delimitation and phylogeny in selected species groups. In one of these groups, the genus Miriquidica (Hertel & Rambold 1987), which comprises about 30 saxicolous species worldwide, we suspected several unknown species to occur. Many Miriquidica species are difficult to identify without careful chemical (TLC) and microscope investigation. The genus was originally delimited by the presence of miriquidic acid (not all species) and anatomical characters of the apothecia, including asci of the “Lecanora-type”. Although Miriquidica species are not uncommon in alpine areas, and in some areas (e.g. in the mesotrophic Fennoscandian mountains) they represent a substantial part of the crustose lichen flora on rocks, the genus remains poorly represented in herbaria worldwide. During our project, Miriquidica species were systematically collected all over Norway, representing wide climatic, geographical and ecological gradients, and determined/studied through a combinations of different approaches (TLC, microscopy, comparative DNA sequencing). Our molecular phylogeny of the genus include multiple accessions of all available species as well as extra-Norwegian material. Most Miriquidica species will remain in monophyletically circumscribed Miriquidica. Some Miriquidica species, however, were extraneous in the genus, and a few species of Lecanora and Lecidea s.lat. showed to belong in Miriquidica. Several new “phenotypic” species will be described and an extensive amount of phenotypically cryptic species have so far been discovered. The genus is well situated within Lecanoraceae.

• Haugan, Reidar; Bendiksby, Mika; Rui, Siri & Timdal, Einar (2013). Molecular phylogeny and taxonomy of the lichen genus Miriquidica (Ascomycota, Lecanoraceae). Full text in Research Archive Show summary

  The lichen genus Miriquidica (Hertel & Rambold 1987) comprises about 30 saxicolous species worldwide. Its phylogeny remains unknown and several unknown/undescribed species may occur. Many Miriquidica species are difficult to identify without careful chemical (TLC) and microscope investigation. The genus was originally delimited by the presence of miriquidic acid (not all species) and anatomical characters of the apothecia, including asci of the “Lecanora-type”. Although Miriquidica species are not uncommon in alpine areas, and in some areas (e.g. in the mesotrophic Fennoscandian mountains) they represent a substantial part of the crustose lichen flora on rocks, the genus remains poorly represented in herbaria worldwide. We have collected Miriquidica species systematically throughout Norway, representing wide climatic, geographical and ecological gradients, and determined/studied this material through a combinations of different approaches (TLC, microscopy, DNA-sequencing). Our molecular phylogeny of the genus include multiple accessions of all available species as well as extra-Norwegian material. Most Miriquidica species will remain in a monophyletically circumscribed Miriquidica. Some Miriquidica species, however, are clearly extraneous in the genus, and a few species of Lecanora and Lecidea s.lat. belong in Miriquidica. Several new species are described and an extensive amount of phenotypically cryptic species have so far been discovered.

• Bjureke, Kristina; Elven, Reidar; Rui, Siri & Bjorå, Charlotte Sletten (2012). Herbariekveld. Full text in Research Archive
• Rui, Siri (2003). Reinlav; adventskalender i Østlandssendingen. [Radio]. Østlandssendingen. Full text in Research Archive

View all works in NVA