Category Archives: Volume 48(1) 2008

Hypocrea seppoi, a new stipitate species from Finland

Authors: Jaklitsch, Walter M. & Gruber, Sabine & Voglmayr, Hermann
Journal: Karstenia, Volume 48 (2008), Issue 1, pages 1-11.
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Key words: chi18-5, edochitinase, Hypocreales, morphology, phylogenetic markers, rpb2, sequence analysis, tef1, Trichoderma

Abstract: The new stipitate species of Hypocrea, H. seppoi; is described, based on material freshly collected in Finland. Characterization of this species includes morphology of teleomorph and anamorph, culture studies and molecular phylogeny. H. seppoiis compared to the other European soil-inhabiting, stipitate Hypocrea species. It is characterized by small stromata, thin fi brous stipe, perithecia decurrent on the stipe, and by conidia that are smaller than those of H. leucopus and H. nybergiana. In addition, this work confirms the congenerity of Podostroma and Podocrea withHypocrea on molecular phylogenetic grounds using sequences of the nuclear genes coding for RNA polymerase II subunit b (rpb2), translation elongation factor 1 alpha (tef1), and endochitinase (chi15-8).

Phylogenetic relationships and distribution of Karstenella (Pezizomycetes)

Authors: Hansen, Karen & Weber, Nancy S. & Landvik, Sara
Journal: Karstenia, Volume 48 (2008), Issue 1, pages 13-19.
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Key words: Karstenellaceae, Pezizales, cytology, LSU, SSU

Abstract: Phylogenetic analyses of partial SSU and LSU rDNA sequences confirm that Karstenella vernalis is a member of the Pezizales. Substantiating this, we definitively report that the asci of Karstenella are operculate. Karstenella vernalis has been reported only from the type locality in Finland; we expand its known distribution to North America (New Mexico). The inconspicuous ascomata of Karstenellaconsist of very thin, resupinate apothecia borne on a subiculum. Hypotheses of a close relationship with Pyronema (Pyronemataceae) or other highly reduced apothecial forms are rejected. Combined analyses show that Karstenella constitutes an independent lineage within a highly supported group of the lineages B (Morchellaceae–Discinaceae and Helvellaceae–Tuberaceae) and C (Ascodesmidaceae, Pyronemataceae, Sarcoscyphaceae and Sarcosomataceae), Caloscyphaceae and Rhizinaceae. This corroborates recognition of a monotypic genus and family of Karstenella. A possible sister group relationship with Caloscyphaceae and/or Helvellaceae–Tuberaceaeis suggested. The ascospores of Karstenella are shown to be bi- to multinucleate using DAPI staining. Excipulum structure and/or spore cytology support a shared origin with Caloscyphaceae and/or the Helvellaceae–Tuberaceae sublineage.Karstenella possesses the most reduced form of ascomata found so far outside lineages A (e.g. Ascobolaceae) and C (e.g. Ascodesmidaceae and Pyronemataceae).

Wood-rotting basidiomycetes of Svalbard (Norway)

Authors: Kosonen, Timo & Huhtinen, Seppo
Journal: Karstenia, Volume 48 (2008), Issue 1, pages 21-28.
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Key words: Aphyllophorales, Corticiaceae, Svalbard, Arctic, dispersation, timber, drift-wood

Abstract: Svalbard comprises several islands in the northern part of the Arctic Ocean. No larger tree species grow on the islands, but driftwood and construction timber have accumulated on the islands during the last 200 years. A thorough inventory of lignicolous basidiomycetous species was carried out on the island of Spitsbergen in 2001. The number of species found was 24. Of these fourteen were collected for the first time in Svalbard. Altogether 115 specimens were identified to species level. Corticioid fungi were the largest group with 84 specimens of 12 species. Some of the species found are seldom collected and poorly known also elsewhere. Only a few of the species were found in all the investigated areas. Half of the species were found only once or twice. Some of the new findings represent prominent range extensions.

New and interesting clavarioid fungi from the hemiboreal zone of Finland

Authors: Shiryaev, Anton
Journal: Karstenia, Volume 48 (2008), Issue 1, pages 29-32.
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Key words: Distribution, Finland, hemiboreal, Typhula

Abstract: During a work in the provinces Åland (Alandia, Ahvenanmaa) and Varsinais-Suomi 24 species of clavarioid fungi (Basidiomycota) were collected, including the rare Multiclavula mucida, Ramaria fennica, Ramariopsis crocea, Typhula capitata, T. olivascens and T. spathulata. New to Finland are Typhula abietina and T. sphaeroidea. Most of the species are widely distributed in the hemiboreal zone in Europe. The localities, habitats, substrates and short ecological notes for the new and some rare species are given.