Category Archives: Volume 51(1) 2011

New and noteworthy records of Pezizomycetes in Sweden and the Nordic countries

Authors: Olariaga, Ibai & Hansen, Karen
Journal: Karstenia, Volume 51 (2011), Issue 1, pages 1-16.
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Key words: Ascomycetes, Pezizales, Pyronomataceae, operculate discomycetes, vital taxonomy, biodiversity

Abstract: Pezizomycetes are poorly known in Sweden compared to the rest of the Nordic countries. Field inventories to improve the knowledge of Pezizomycetes in Sweden were therefore carried out during 2008-2010 in selected areas. Nine new or remarkable species are included in this first contribution, among which five are new to Sweden and two to the Nordic countries. Byssonectria fusispora has not previously been known or accepted in the Nordic countries. We compare it directly to B. terrestris using fresh material and give distinguishing characters.Chalazion sociabile is new to Sweden and this is the first report outside Norway. Three Scutellinia species are presented for the first time for Sweden, S. citrina, S. macrospora and S. torrentis. A deviant S. torrentis collection with larger and finely ornamented spores is described in detail and compared to other collections of S. torrentis (including an isolectotype) and S. superba. The report of S. superba is the second for Sweden. The first Nordic and second European record ofParatrichophaea michiganensis is presented. The genus Spooneromyces is reported for the first time in Sweden, with S. helveticus as new to the Nordic countries, and S. laeticolor new to Sweden. Detailed descriptions are provided, drawing attention to in vivo characters, with colour macro- and microscopic photos of the species. Species delimitations are discussed, and ecology and known distribution for each species are given.

Hypoxylon macrosporum P. Karst. (Xylariaceae) new to Finland – and a new northern limit

Authors: Mathiassen, Geir & Granmo, Alfred & Rämä, Teppo
Journal: Karstenia, Volume 51 (2011), Issue 1, pages 17-22.
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Key words: Ascomycota, Xylariales, Hypoxylon macrosporum, Finland, distribution, ecology, host preference, taxonomy

Abstract: Hypoxylon macrosporum P. Karst. is recorded for the first time from Finland. It was found on different species of Salix in nine localities in the north of the country, in the biogeographical provinces of Enontekiön Lappi, Inarin Lappi and Kittilän Lappi in 1995, 1996 and 2002. We also report new finds in Norway representing the hitherto northernmost known limit for the species in Fennoscandia. Hypoxylon macrosporum has a wide distribution, but is infrequent outside Scandinavia. In addition to Norway and Sweden, the species is known from France, Switzerland, Russia (Kola Peninsula and eastern Siberia), Iceland, Greenland, western United States and western Canada.

Russula pyriodora, a new fragrant species described from Finland

Authors: Ruotsalainen, Juhani & Huhtinen, Seppo
Journal: Karstenia, Volume 51 (2011), Issue 1, pages 23-30.
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Key words: Russulaceae, Russula, Atropurpurea, Russula pyriodora, Finland, taxonomy

Abstract: A new species, Russula pyriodora, is described based on Finnish material. It is characterized by an appearance of R. betularum, but has a distinctive odour of pears. Other differentiating features, both macroscopical and microscopical, are also discussed. The new species is also compared with the type of R. alborosea, which is a likely synonym of R. mairei.