Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland
Species of Verrucaria, characterised by large spores (at least some spores exceeding 25 µm in length), perithecia leaving pits in the rock and a pale thin thallus, form a taxonomically-difficult and poorly-known group. In this study, such species occurring in Finland are revised, based on ITS sequen...
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Online Access: | https://doi.org/10.3897/mycokeys.72.56223 https://mycokeys.pensoft.net/article/56223/ |
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ftpensoft:10.3897/mycokeys.72.56223 2023-05-15T17:42:28+02:00 Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland Pykälä,Juha Kantelinen,Annina Myllys,Leena 2020 text/html https://doi.org/10.3897/mycokeys.72.56223 https://mycokeys.pensoft.net/article/56223/ en eng Pensoft Publishers info:eu-repo/semantics/altIdentifier/eissn/1314-4049 info:eu-repo/semantics/altIdentifier/pissn/1314-4057 info:eu-repo/semantics/openAccess MycoKeys 72: 43-92 Ascomycota calcareous rocks DNA barcoding Europe ITS lichenised fungi taxonomic revision Research Article 2020 ftpensoft https://doi.org/10.3897/mycokeys.72.56223 2022-03-01T12:44:06Z Species of Verrucaria, characterised by large spores (at least some spores exceeding 25 µm in length), perithecia leaving pits in the rock and a pale thin thallus, form a taxonomically-difficult and poorly-known group. In this study, such species occurring in Finland are revised, based on ITS sequences and morphology. Maximum likelihood analysis of ITS sequence data was used to examine if the species belong to the Thelidium group, as suggested by BLAST search. Twelve species are accepted in Finland: Verrucaria bifurcata sp. nov., V. cavernarum sp. nov., V. devergens, V. difficilis sp. nov., V. foveolata, V. fuscozonata sp. nov., V. karelica, V. kuusamoensis sp. nov., V. subdevergens sp. nov., V. subjunctiva, V. subtilis and V. vacillans sp. nov. Verrucaria foveolata is nested in V. subjunctiva in the phylogeny, but due to morphological and ecogeographical differences, the two taxa are treated as separate species pending further studies. Based on the analysis, the study species belong to the Thelidium group. The studied species show a rather high infraspecific morphological, but a low genetic variation. Furthermore, they show considerable overlap in their morphology and many specimens cannot be reliably identified, based on morphology only. All species are restricted to calcareous rocks. Verrucaria alpigena, V. cinereorufa and V. hochstetteri are excluded from the lichen flora of Finland. Verrucaria grossa is considered a species with unresolved identity. Verrucaria foveolata and V. subtilis are rather common on calcareous rocks of Finland while V. devergens and V. kuusamoensis are restricted to northern Finland. Verrucaria subjunctiva occurs mainly in northern Finland. Verrucaria bifurcata has been found only from southern Finland. Verrucaria difficilis has few localities both in SW and NE Finland. Verrucaria vacillans is restricted to calcareous rocks (dolomite) on the mountains of the NW corner of Finland. Verrucaria fuscozonata, V. karelica and V. subdevergens occur only in the Oulanka area in NE Finland. A lectotype is designated for V. subjunctiva. The morphology of the Finnish species was compared with 51 European species of Verrucaria presumably belonging to the Thelidium group. Article in Journal/Newspaper Northern Finland Pensoft Publishers Oulanka ENVELOPE(28.986,28.986,66.455,66.455) MycoKeys 72 43 92 |
institution |
Open Polar |
collection |
Pensoft Publishers |
op_collection_id |
ftpensoft |
language |
English |
topic |
Ascomycota calcareous rocks DNA barcoding Europe ITS lichenised fungi taxonomic revision |
spellingShingle |
Ascomycota calcareous rocks DNA barcoding Europe ITS lichenised fungi taxonomic revision Pykälä,Juha Kantelinen,Annina Myllys,Leena Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland |
topic_facet |
Ascomycota calcareous rocks DNA barcoding Europe ITS lichenised fungi taxonomic revision |
description |
Species of Verrucaria, characterised by large spores (at least some spores exceeding 25 µm in length), perithecia leaving pits in the rock and a pale thin thallus, form a taxonomically-difficult and poorly-known group. In this study, such species occurring in Finland are revised, based on ITS sequences and morphology. Maximum likelihood analysis of ITS sequence data was used to examine if the species belong to the Thelidium group, as suggested by BLAST search. Twelve species are accepted in Finland: Verrucaria bifurcata sp. nov., V. cavernarum sp. nov., V. devergens, V. difficilis sp. nov., V. foveolata, V. fuscozonata sp. nov., V. karelica, V. kuusamoensis sp. nov., V. subdevergens sp. nov., V. subjunctiva, V. subtilis and V. vacillans sp. nov. Verrucaria foveolata is nested in V. subjunctiva in the phylogeny, but due to morphological and ecogeographical differences, the two taxa are treated as separate species pending further studies. Based on the analysis, the study species belong to the Thelidium group. The studied species show a rather high infraspecific morphological, but a low genetic variation. Furthermore, they show considerable overlap in their morphology and many specimens cannot be reliably identified, based on morphology only. All species are restricted to calcareous rocks. Verrucaria alpigena, V. cinereorufa and V. hochstetteri are excluded from the lichen flora of Finland. Verrucaria grossa is considered a species with unresolved identity. Verrucaria foveolata and V. subtilis are rather common on calcareous rocks of Finland while V. devergens and V. kuusamoensis are restricted to northern Finland. Verrucaria subjunctiva occurs mainly in northern Finland. Verrucaria bifurcata has been found only from southern Finland. Verrucaria difficilis has few localities both in SW and NE Finland. Verrucaria vacillans is restricted to calcareous rocks (dolomite) on the mountains of the NW corner of Finland. Verrucaria fuscozonata, V. karelica and V. subdevergens occur only in the Oulanka area in NE Finland. A lectotype is designated for V. subjunctiva. The morphology of the Finnish species was compared with 51 European species of Verrucaria presumably belonging to the Thelidium group. |
format |
Article in Journal/Newspaper |
author |
Pykälä,Juha Kantelinen,Annina Myllys,Leena |
author_facet |
Pykälä,Juha Kantelinen,Annina Myllys,Leena |
author_sort |
Pykälä,Juha |
title |
Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland |
title_short |
Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland |
title_full |
Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland |
title_fullStr |
Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland |
title_full_unstemmed |
Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland |
title_sort |
taxonomy of verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in finland |
publisher |
Pensoft Publishers |
publishDate |
2020 |
url |
https://doi.org/10.3897/mycokeys.72.56223 https://mycokeys.pensoft.net/article/56223/ |
long_lat |
ENVELOPE(28.986,28.986,66.455,66.455) |
geographic |
Oulanka |
geographic_facet |
Oulanka |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
MycoKeys 72: 43-92 |
op_relation |
info:eu-repo/semantics/altIdentifier/eissn/1314-4049 info:eu-repo/semantics/altIdentifier/pissn/1314-4057 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3897/mycokeys.72.56223 |
container_title |
MycoKeys |
container_volume |
72 |
container_start_page |
43 |
op_container_end_page |
92 |
_version_ |
1766144337300684800 |