Øyvind Weholt

Øyvind Weholt
COWI

About

19
Publications
13,839
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83
Citations
Citations since 2017
10 Research Items
72 Citations
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20172018201920202021202220230510152025
20172018201920202021202220230510152025
20172018201920202021202220230510152025
Introduction

Publications

Publications (19)
Article
Full-text available
INTEGRATIVE SYSTEMATICS 5 (2) 2022: 1-85. Based on detailed morphological and genetic investigation, 11 new species of Inocybe (I. abdita, I. alcis, I. carissima, I. cryptica, I. culicis, I. mecoana, I. mortenii, I. orioli, I. rangiferi, I. sepiana and I. turfae) are described. Six of the new species are smooth-spored and five are nodulose-spored...
Preprint
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A combined morphological and molecular genetic study of the European species within the /Rhombisporum clade of the genus Entoloma reveals a high species diversity. This group comprises typical grassland species with pronounced and well-differentiated cheilocystidia, and a wide range of spore shapes varying from rhomboid to five-angled. To fix the c...
Article
Hebeloma are ectomycorrhizal fungi, common in woodlands and arctic-alpine habitats of the northern hemisphere. Until recently determination of species within this genus was hugely difficult due to the lack of clarity on species delimitation and thus names applied to collections, observations and sequences were highly unreliable. Based on recent rev...
Article
Full-text available
2020) Three new Entoloma species of the Cyanula clade (Entolomataceae, Agaricales) from (sub)alpine habitats in Northern Norway and Sweden.-Sydowia 73: 185-196. Three Entoloma species belonging to the Cyanula clade from (middle-) northern boreal and alpine areas are described as new to science. Entoloma montanum, E. nordlandicum, and E. septentrion...
Article
Full-text available
We describe a smooth-spored species of Inocybe, the basidiomes of which have been encountered growing with Salix in exposed habitats, often with calcareous sandy soils in Germany and Fennoscandia. The species is presented with a detailed description, photographs and microdrawings. Its relationship to similar taxa growing in the same environments is...
Article
Full-text available
This is the second paper reporting major results from the Norwegian Entoloma project 20152017. Here we present species that are new to Norway or little known, from the following smaller clades: Caeruleopolitum, Claudopus, Entocybe, Leptonia, Prunuloides and Sphagneti. In addition, a few species taking a somewhat isolated position in our unpublished...
Article
Full-text available
Entoloma aurorae-borealis is described as new to science and three rare or little known Entoloma species (E. borgenii, E. eminens, and E. serpens) from Norway are treated based on morphological and molecular evidences. In the ITS phylogeny presented here, all species belong to the Sinuatum clade, one of five well-supported lineages of subgenus Ento...
Article
Full-text available
The rhodopolioid species of Entoloma (subgen. Entoloma) in Norway are presented. The rhodopolioid clade consists of tricholomatoid or collybioid, rarely omphalinoid, ectomycorrhizal species. Altogether 24 species of the rhodopolioid clade were recorded and verified by rDNA ITS sequence data, of which 10 are here reported as new to Norway, including...
Article
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A new Entoloma species is fully described from the Holmvassdalen Nature Reserve in Nordland, Norway, based on morphological, ecological and molecular characteristics. Its position within the genus is discussed.
Article
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Psathyrella jacobssonii was first published from Sweden in 2001. In Norway the species was found for the first time in 2014, and it is so far not known outside Fennoscandia. We here record it from four localities in Norway. This paper provides a description of thematerial from Holmvassdalen in Nordland county, North Norway. A compilation of other f...
Article
Full-text available
Entoloma graphitipes var. graphitipes is here reported from one location in Holmvass-dalen Nature Reserve in the county Nordland, Norway. The species was first found in Germany in 1982, and then five times in Spain. So far Holmvassdalen is the only location in Northern Europe where it has been reported. Comparison of ITS sequences from the Norwegia...
Article
Full-text available
Exhaustive descriptions of Agaricus collegarumand A. masoalensis, two newtaxa from Europe, along with color photographs of their macro- and microscopic charac-ters and a comparative study of their closest allies, are given. A phylogenetic analysis,based on the nuclear ITS rDNA sequences, confirms that these new species belong to thesection Nigrobru...

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Projects

Projects (2)
Project
Starting from the morphology based taxonomy of Entoloma, reflected in Fungi Europei vol. 5a and Nordic Fungi, an attempt is made through barcoding of European species, including type specimens, to come to a phylogenetically based species concept.