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  • 1. Baral, Hans-Otto
    et al.
    Kosonen, Timo
    Herbarium, Biodiversity Unit, University of Turku, FI-20014 Turku, Finland..
    Polhorský, Adam
    Stöckli, Elisabeth
    Huhtinen, Seppo
    Herbarium, Biodiversity Unit, University of Turku, FI-20014 Turku, Finland..
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Venturioscypha nigropila (Hyphodiscaceae, Helotiales) – a new genus and species from xeric Pinus bark2022In: Karstenia, ISSN 0453-3402, p. 28-48Article in journal (Refereed)
  • 2. Crous, P.W.
    et al.
    Lombard, L.
    Sandoval-Denis, M.
    Seifert, K.A.
    Schroers, H.-J.
    Chaverri, P.
    Gené, J.
    Guarro, J.
    Hirooka, Y.
    Bensch, K.
    Kema, G.H.J.
    Lamprecht, S.C.
    Cai, L.
    Rossman, A.Y.
    Stadler, M.
    Summerbell, R.C.
    Taylor, J.W.
    Ploch, S.
    Visagie, C.M.
    Yilmaz, N.
    Frisvad, J.C.
    Abdel-Azeem, A.M.
    Abdollahzadeh, J.
    Abdolrasouli, A.
    Akulov, A.
    Alberts, J.F.
    Araújo, J.P.M.
    Ariyawansa, H.A.
    Bakhshi, M.
    Bendiksby, M.
    Ben Hadj Amor, A.
    Bezerra, J.D.P.
    Boekhout, T.
    Câmara, M.P.S.
    Carbia, M.
    Cardinali, G.
    Castañeda-Ruiz, R.F.
    Celis, A.
    Chaturvedi, V.
    Collemare, J.
    Croll, D.
    Damm, U.
    Decock, C.A.
    de Vries, R.P.
    Ezekiel, C.N.
    Fan, X.L.
    Fernández, N.B.
    Gaya, E.
    González, C.D.
    Gramaje, D.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Fusarium: more than a node or a foot-shaped basal cell2021In: Studies in mycology, ISSN 0166-0616, E-ISSN 1872-9797, Vol. 98, p. 100116-100116, article id 100116Article in journal (Refereed)
  • 3. Crous, P.W.
    et al.
    Quaedvlieg, W
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Hawksworth, D.L.
    Groenwald, J.Z.
    Phacidium and Ceuthospora (Phacidiaceae) are congeneric: taxonomic and nomenclatural implications2014In: IMA Fungus, ISSN 2210-6340, E-ISSN 2210-6359, Vol. 5, no 2, p. 173-193Article in journal (Refereed)
  • 4. Dahlberg, Anders
    et al.
    Edman, Mattias
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Jeppson, Mikael
    Karström, Mats
    Knutsson, Tommy
    Krikorev, Michael
    Lindström, Håkan
    Nitare, Johan
    Norden, Björn
    Svensson, Sigvard
    Tedebrand, Jan-Oluf
    786 svampar på 2015 års rödlista2015In: Svensk Mykologisk Tidskrift, ISSN 1653-0357, Vol. 36, p. 91-97-Article in journal (Other (popular science, discussion, etc.))
    Abstract [en]

    A new Swedish Red List was published April 28th 2015 by the Swedish Species Information Centre in which 786 species of fungi are listed. Compared to the previous Red List published in 2010, 11 species have been down-listed, 51 species have been added and 35 species have changed names or taxonomic rank, thus the list has increased by 41. The changes are mainly due to increased knowledge of taxonomy, ecology and distribution, not to changes in the sta-tus of the species. Here, the members of the Species Specialist Group for Fungi 2011 – 2015 summarize the results of the red listing.

  • 5.
    Hansen, Karen
    et al.
    Swedish Museum of Natural History, Department of Botany.
    Olariaga, Ibai
    Swedish Museum of Natural History, Department of Botany.
    Species limits and relationships within Otidea inferred from multiple gene phylogenies2015In: Persoonia, ISSN 0031-5850, E-ISSN 1878-9080, Vol. 35, p. 148-165Article in journal (Refereed)
    Abstract [en]

    The genus Otidea is one of the more conspicuous members of the Pyronemataceae, with high speciesdiversity in hemiboreal and boreal forests. The genus is morphologically coherent and in previous higher-level multigeneanalyses it formed a highly supported monophyletic group. Species delimitation within Otidea is controversialand much confusion has prevailed in the naming of taxa. To provide a phylogenetic hypothesis of Otidea, elucidatespecies diversity and limits we compiled a four-gene dataset including the nuclear LSU rDNA and three nuclearprotein-coding genes (RPB1, RPB2 and EF-1α) for 89 specimens (total 4 877 nucleotides). These were selected froma larger sample of material studied using morphology and 146 ITS (ITS1-5.8S-ITS2) and 168 LSU rDNA sequencesto represent the full genetic diversity. Using genealogical concordance phylogenetic species recognition (GCPSR),Bayesian and maximum likelihood analyses of the individual datasets resolved 25 species of Otidea. An additionaleight singletons are considered to be distinct species, because they were genetically divergent from their sisters.Sequences of multiple genes were included from 13 holotypes, one neotype and three epitypes. Otidea angusta,O. myosotis and O. papillata f. pallidefurfuracea are nested within O. nannfeldtii, O. leporina and O. tuomikoskii,respectively and are considered synonyms. Otidea cantharella var. minor is shown to be a distinct species. Fivenew species were discovered: O. oregonensis and O. pseudoleporina for North America; and O. borealis, O. brunneoparvaand O. subformicarum for Europe. The analyses of the individual four gene datasets yielded phylogeniesthat were highly concordant topologically, except for the RPB1 that showed supported conflict for some nodes inBayesian analysis. Excluding the RPB1 from the combined analyses produced an identical topology to the four-genephylogeny, but with higher support for several basal nodes and lower support for several shallow nodes. We argueto use the three-gene dataset to retrieve the maximum support for the higher-level relationships in Otidea, but stillutilise the signal from the RPB1 for the delimitation and relationships of closely related species. From the four generegions utilised, EF-1α and RPB1 have the strongest species recognition power, and with higher amplification successEF-1α may serve as the best secondary barcoding locus for Otidea (with ITS being a primary). The phylogenyfrom the three- and four-gene datasets is fully resolved and strongly supported in all branches but one. Two majorclades, as part of six inclusive clades A–F, are identified – and ten subclades within these: A) O. platyspora andO. alutacea subclades, and B) O. papillata, O. leporina, O. tuomikoskii, O. cantharella, O. formicarum, O. unicisa,O. bufonia-onotica and O. concinna subclades. Morphological features in Otidea appear to be fast evolving andprone to shifts, and are poor indicators of higher-level relationships. Nevertheless, a conspicuous spore ornament isa synapomorphy for the O. unicisa subclade (/Otideopsis); all other species in Otidea have smooth or verruculose (inSEM) spores. Exclusively pale to bright yellow apothecia and straight to curved, broadly clavate to distinctly capitateparaphyses are synapomorphies for a restricted O. concinna subclade (/Flavoscypha). The curved to hooked apicesof the paraphyses is suggested to be a symplesiomorphic trait for the genus. The reaction of resinous exudateson the outermost excipular cells that coalesce into amber drops in Melzer’s reagent is likely an ancestral state forclade B. We estimate that Otidea consists of 47 species worldwide, based on all available information (includingmorphology, ITS or LSU sequences, and literature descriptions). Three fifths of the species occur in Europe, with20 species recognised as endemic. At least 14 species occur in North America and 17 in Asia, with eight and tenspecies considered endemic to each continent, respectively. Our knowledge about Otidea in Asia is still fragmentaryand the diversity likely much higher.

  • 6.
    Hansen, Karen
    et al.
    Swedish Museum of Natural History, Department of Botany. Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Ave., Cambridge, MA 02138, USA.
    Perry, Brian A.
    Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Ave., Cambridge, MA 02138, USA.
    Dranginis, Andrew W.
    Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Ave., Cambridge, MA 02138, USA.
    Pfister, Donald H.
    Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Ave., Cambridge, MA 02138, USA.
    A phylogeny of the highly diverse cup-fungus family Pyronemataceae (Pezizomycetes, Ascomycota) clarifies relationships and evolution of selected lifehistory traits2013In: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 67, p. 311-335Article in journal (Refereed)
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  • 7.
    Hansen, Karen
    et al.
    Swedish Museum of Natural History, Department of Botany.
    S. Weber, Nancy
    Oregon State University, Department of Forest Ecosystems and Society, 321 Richardson Hall, Corvallis, OR 97331, USA.
    Landvik, Sara
    Novozymes A/S, Department of Fungal Screening, Smørmosevej 25, DK-2880 Bagsværd, Denmark.
    Phylogenetic relationships and distribution of Karstenella (Pezizomycetes)2008In: Karstenia, ISSN 0453-3402, Vol. 48, p. 13-19Article in journal (Refereed)
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  • 8.
    Hansen, Karen
    et al.
    Swedish Museum of Natural History, Department of Botany.
    Schumacher, Trond
    Department of Biosciences, University of Oslo, P.O. Box 1066 Blindern, 0316 Oslo, Norway..
    Skrede, Inger
    Department of Biosciences, University of Oslo, P.O. Box 1066 Blindern, 0316 Oslo, Norway..
    Huhtinen, Seppo
    Herbarium, Biodiversity Unit, University of Turku, FI-20014 Turku, Finland..
    Wang, Xianghua
    Swedish Museum of Natural History, Department of Botany. CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, P. R. China..
    Pindara revisited – evolution and generic limits in Helvellaceae: Generic limits in Helvellaceae2019In: Persoonia, ISSN 0031-5850, E-ISSN 1878-9080, Vol. 42, p. 186-204Article in journal (Refereed)
    Abstract [en]

    The Helvellaceae encompasses taxa that produce some of the most elaborate apothecial forms, as well as hypogeous ascomata, in the class Pezizomycetes (Ascomycota). While the circumscription of the Helvellaceae is clarified, evolutionary relationships and generic limits within the family are debatable. A robust phylogeny of the Helvellaceae, using an increased number of molecular characters from the LSU rDNA, RPB2 and EF-1α gene regions (4 299 bp) and a wide representative sampling, is presented here. Helvella s.lat. was shown to be polyphyletic, because Helvella aestivalis formed a distant monophyletic group with hypogeous species of Balsamia and Barssia. All other species of Helvella formed a large group with the enigmatic Pindara (/Helvella) terrestris nested within it. The ear-shaped Wynnella constitutes an independent lineage and is recognised with the earlier name Midotis. The clade of the hypogeous Balsamia and Barssia, and H. aestivalis is coherent in the three-gene phylogeny, and considering the lack of phenotypic characters to distinguish Barssia from Balsamia we combine species of Barssia, along with H. aestivalis, in Balsamia. The closed/tuberiform, sparassoid H. astieri is shown to be a synonym of H. lactea; it is merely an incidental folded form of the saddle-shaped H. lactea. Pindara is a sister group to a restricted Helvella, i.e., excluding the /leucomelaena lineage, on a notably long branch. We recognise Pindara as a separate genus and erect a new genus Dissingia for the /leucomelaena lineage, viz. H. confusa, H. crassitunicata, H. leucomelaena and H. oblongispora. Dissingia is supported by asci that arise from simple septa; all other species of Helvellaceae have asci that arise from croziers, with one exception being the /alpina-corium lineage of Helvella s.str. This suggests ascus development from croziers is the ancestral state for the Helvellaceae and that ascus development from simple septa has evolved at least twice in the family. Our phylogeny does not determine the evolutionary relationships within Helvella s.str., but it is most parsimonious to infer that the ancestor of the helvelloids produced subsessile or shortly stipitate, cup-shaped apothecia. This shape has been maintained in some lineages of Helvella s.str. The type species of Underwoodia, Underwoodia columnaris, is a sister lineage to the rest of the Helvellaceae

  • 9. Healy, Rosanne
    et al.
    Pfister, Donald H.
    Rossman, Amy
    Marvanová, L.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Competing sexual-asexual generic names of Pezizomycetes and recommendations for use.2016In: IMA Fungus, ISSN 2210-6340, E-ISSN 2210-6359, Vol. 7, no 2, p. 285-288Article in journal (Refereed)
    Abstract [en]

    Following the change that eliminated dual naming of sexual and asexual morphs of fungi, generic names of Pezizomycetes have been evaluated to determine which of the competing names should be recommended for use. Evaluation is based on congruence of type species to determine if the names are congeneric and which name is most commonly cited as well as priority. In the Pezizomycetes six pairs of generic names were determined to compete. In all cases the older name, representing the sexual morph, is recommended for use, specifically Caloscypha rather than Geniculodendron, Desmazierella rather than Verticicladium, Miladina rather than Actinosporella, Morchella rather than Costantinella, Sarcoscypha rather than Molliardiomyces, and Trichophaea rather than Dichobotrys. 

  • 10.
    Kirk, Paul
    et al.
    Royal Botanic Gardens, Kew, UK.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    A without-prejudice list of generic names of fungi for protection under the International Code of Nomenclature for algae, fungi, and plants.2013In: IMA Fungus, ISSN 2210-6340, E-ISSN 2210-6359, Vol. 4, no 2, p. 381-443Article in journal (Refereed)
  • 11.
    Kosonen, Timo
    et al.
    Swedish Museum of Natural History, Department of Botany.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Huhtinen, Seppo
    Ordning i Hyaloscyphaceae2015In: Svensk Mykologisk Tidskrift, ISSN 1653-0357, Vol. 36, p. 9-12Article in journal (Other (popular science, discussion, etc.))
  • 12.
    Kosonen, Timo
    et al.
    Swedish Museum of Natural History, Department of Botany. Herbarium, Biodiversity Unit, University of Turku, FI-20014 Turku, Finland.
    Huhtinen, Seppo
    Herbarium, Biodiversity Unit, University of Turku, FI-20014 Turku, Finland..
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Taxonomy and systematics of Hyaloscyphaceae and Arachnopezizaceae2020In: Persoonia, ISSN 0031-5850, E-ISSN 1878-9080, p. 26-62Article in journal (Refereed)
  • 13.
    Loizides, Michael
    et al.
    Limassol, Cyprus.
    Alvarado, Pablo
    ALVALAB, Av. Bruselas 2‑3B, 33011 Oviedo, Spain.
    Moreau, Pierre-Arthur
    Faculté de Pharmacie Lille, Université de Lille, EA 4483 IMPECS, F‑59000 Lille, France.
    Assyov, Boris
    Halasů, Viktorie
    Stadler, Marc
    Rinaldi, Andrea
    Marques, Guilhermina
    Zervakis, Georgios I.
    Borovička, Jan
    Van Vooren, Nicolas
    Grebenc, Tine
    Richard, Franck
    Taşkin, Hatira
    Gube, Matthias
    Sammut, Carmel
    Agnello, Carlo
    Baroni, Timothy J.
    Crous, Pedro
    Fryssouli, Vassiliki
    Gonou, Zacharoula
    Guidori, Urbano
    Gulden, Gro
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Kristiansen, Roy
    Læssøe, Thomas
    Mateos, Javier
    Miller, Andrew
    Moreno, Gabriel
    Perić, Branislav
    Polemis, Elias
    Salom, Joan Carles
    Siquier, José Leonardo
    Snabl, Martin
    Weholt, Øyvind
    Bellanger, Jean-Michel
    Has taxonomic vandalism gone too far? A case study, the rise of the pay-to-publish model and the pitfalls of Morchella systematics2022In: Mycological progress, ISSN 1617-416X, E-ISSN 1861-8952, Vol. 21, no 1, p. 7-38Article in journal (Refereed)
    Abstract [en]

    The genus Morchella has gone through turbulent taxonomic treatments. Although significant progress in Morchella systematics has been achieved in the past decade, several problems remain unresolved and taxonomy in the genus is still in flux. In late 2019, a paper published in the open-access journal Scientific Reports raised serious concerns about the taxonomic stability of the genus, but also about the future of academic publishing. The paper, entitled “High diversity of Morchella and a novel lineage of the esculenta clade from the north Qinling Mountains revealed by GCPSR-based study” by Phanpadith and colleagues, suffered from gross methodological errors, included false results and artifactual phylogenies, had misapplied citations throughout, and proposed a new species name invalidly. Although the paper was eventually retracted by Scientific Reports in 2021, the fact that such an overtly flawed and scientifically unsound paper was published in a high-ranked Q1 journal raises alarming questions about quality controls and safekeeping procedures in scholarly publishing. Using this paper as a case study, we provide a critical review on the pitfalls of Morchella systematics followed by a series of recommendations for the delimitation of species, description of taxa, and ultimately for a sustainable taxonomy in Morchella. Problems and loopholes in the academic publishing system are also identified and discussed, and additional quality controls in the pre- and post-publication stages are proposed.

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  • 14.
    Mattupalli, Chakradhar
    et al.
    Noble Research Institute, LLC, Ardmore, OK 73401, U.S.A.;Department of Plant Pathology, Washington State University, Mount Vernon NWREC, Mount Vernon, WA 98273, U.S.A..
    Cuenca, Fernanda Proaño
    Institute for Biosecurity and Microbial Forensics, Oklahoma State University, Stillwater, OK 74078, U.S.A.;Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078, U.S.A..
    Shiller, Jason B.
    Noble Research Institute, LLC, Ardmore, OK 73401, U.S.A.;Scion, Rotorua 3046, New Zealand.
    Watkins, Tara
    Noble Research Institute, LLC, Ardmore, OK 73401, U.S.A.;Department of Plant, Soil and Microbial Science, Michigan State University, East Lansing, MI 48824, U.S.A..
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Garzon, Carla D.
    Department of Plant Science and Landscape Architecture, Delaware Valley University, Doylestown, PA 18901, U.S.A..
    Marek, Stephen M.
    Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078, U.S.A..
    Young, Carolyn A.
    Noble Research Institute, LLC, Ardmore, OK 73401, U.S.A.;Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078, U.S.A..
    Genetic Diversity of Phymatotrichopsis omnivora Based on Mating Type and Microsatellite Markers Reveals Heterothallic Mating System2022In: Plant Disease, ISSN 0191-2917, E-ISSN 1943-7692, Vol. 106, no 8, p. 2105-2116Article in journal (Refereed)
    Abstract [en]

    Phymatotrichopsis omnivora is a member of Pezizomycetes and causes root rot disease on a broad range of dicotyledonous plants. Using recently generated draft genome sequence data from four P. omnivora isolates, we developed simple sequence repeat (SSR) markers and identified both mating type genes (MAT1-1-1 and MAT1-2-1) in this fungus. To understand the genetic diversity of P. omnivora isolates (n = 43) and spore mats (n = 29) collected from four locations (Oklahoma, Texas, Arizona, and Mexico) and four host crops (cotton, alfalfa, peach, and soybean), we applied 24 SSR markers and showed that of the 72 P. omnivora isolates and spore mats tested, 41 were distinct genotypes. Furthermore, the developed SSR markers did not show cross-transferability to other close relatives of P. omnivora in the class Pezizomycetes. A multiplex PCR detecting both mating type idiomorphs and a reference gene (TUB2) was developed to screen P. omnivora isolates. Based on the dataset we tested, P. omnivora is a heterothallic fungus with both mating types present in the United States in a ratio close to 1:1. We tested P. omnivora spore mats obtained from spatially distinct disease rings that developed in a center-pivot alfalfa field and showed that both mating types can be present not only in the same field but also within a single spore mat. This study shows that P. omnivora has the genetic toolkit for generating sexually diverse progeny, providing impetus for future studies that focus on identifying sexual morphs in nature.

  • 15.
    Moreau, Pierre-Arthur
    et al.
    Département des Sciences végétales et fongiques, EA 4483, UFR Pharmacie, Univ. Lille Nord de France, 59000 Lille, France.
    Bellanger, Jean-Michel
    CEFE, INSERM, Université Montpellier 2, Campus CNRS, 1919 Route de Mende, 34293 Montpellier, France.
    Clowez, Philippe
    56 place des Tilleuls, 60400 Pont-l’Evêque, France.
    Courtecuisse, Régis
    Département des Sciences végétales et fongiques, EA 4483, UFR Pharmacie, Univ. Lille Nord de France, 59000 Lille, France.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Knudsen, Henning
    Natural History Museum of Denmark, University of Copenhagen, Øster Farimagsgade 2 C, 1353 Copenhagen K, Denmark.
    O’Donnell, Kerry
    NCAUR-ARS-USDA, Peoria, Illinois 61604, U.S.A..
    Richard, Franck
    CEFE, CNRS, Université Montpellier 2, Campus CNRS, 1919 Route de Mende, 34293 Montpellier, France.
    (2289) Proposal to conserve the name Morchella semilibera against Phallus crassipes, P. gigas and P. undosus (Ascomycota): Conserve Morchella semilibera2014In: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 63, no 3, p. 677-678Article in journal (Refereed)
  • 16.
    Nguyen, Nhu H.
    et al.
    Department of Plant and Microbial Biology, University of California at Berkeley, Berkeley, California 94720.
    Landeros, Fidel
    Departamento de Bota´nica y Zoologı´a, Universidad de Guadalajara, Mexico.
    Garibay-Orijel, Roberto
    Instituto de Biologı´a, Universidad Nacional Auto´noma de Me´xico, Mexico.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Vellinga, Else C.
    Department of Plant and Microbial Biology, University of California at Berkeley, Berkeley, California 94720.
    The Helvella lacunosa species complex in western NorthAmerica: cryptic species, misapplied names and parasites2013In: Mycologia, ISSN 0027-5514, E-ISSN 1557-2536, Vol. 105, no 5, p. 1275-1286Article in journal (Refereed)
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  • 17.
    Olariaga, Ibai
    et al.
    Swedish Museum of Natural History, Department of Botany.
    Corriol, Gilles
    Conservatoire botanique national des Pyrénées et de Midi-Pyrénées. Vallon de Salut, B.P. 315, F-65203 Bagnères-de-Bigorre Cedex (France).
    Salcedo, Isabel
    Department of Plant Biology and Ecology (Botany), University of the Basque Country (UPV/EHU), Apdo 644, E-48080 Bilbao, Spain.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    A new species of Typhula with sigmoid spores:Typhula suecica2016In: Karstenia, ISSN 0453-3402, Vol. 56, p. 27-38Article in journal (Refereed)
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  • 18.
    Olariaga, Ibai
    et al.
    Swedish Museum of Natural History, Department of Botany.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    New and noteworthy records of Pezizomycetes in Sweden and the Nordic countries2011In: Karstenia, ISSN 0453-3402, Vol. 51, p. 1-16Article in journal (Refereed)
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  • 19.
    Olariaga, Ibai
    et al.
    Department Biology and Geology, Physics and Inorganic Chemistry Rey Juan Carlos University C/ Tulipán s/n, 28933 Móstoles, Madrid Spain.
    Huhtinen, Seppo
    Biodiversity Unit Herbarium, University of Turku 20014 Turku Finland.
    Læssøe, Thomas
    Department of Biology/Natural History Museum of Denmark University of Copenhagen Universitetsparken 15, 2100 København Ø Denmark.
    Petersen, Jens H.
    MycoKey Nøruplundvej 2, 8400 Ebeltoft Denmark.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Parra, Luis A.
    Avda. Miranda do Douro 7 5º G, 09400 Aranda de Duero, Burgos Spain.
    (2873) Proposal to conserve the name Ceratellopsis with a conserved type ( Basidiomycota : Agaricales )2022In: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 71, no 2, p. 467-468Article in journal (Refereed)
  • 20.
    Olariaga, Ibai
    et al.
    Department Biology and Geology, Physics and Inorganic Chemistry Rey Juan Carlos University C/ Tulipán s/n, 28933 Móstoles Madrid Spain.
    Huhtinen, Seppo
    Biodiversity Unit, Herbarium University of Turku 20014 Turku Finland.
    Læssøe, Thomas
    Department of Biology/Globe Institute University of Copenhagen Universitetsparken 15, 2100 København Ø Denmark.
    Petersen, Jens H.
    MycoKey Nøruplundvej 2, 8400 Ebeltoft Denmark.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Parra, Luis A.
    Calle Miranda do Douro 7 5º G, 09400 Aranda de Duero Burgos Spain.
    (2874–2877) Proposals to conserve the names Typhula with a conserved type, Macrotyphula against Sclerotium , and Phyllotopsidaceae against Sclerotiaceae , and to reject the name Sclerotium fulvum ( Basidiomycota : Agaricales )2022In: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 71, no 2, p. 468-470Article in journal (Refereed)
  • 21.
    Olariaga, Ibai
    et al.
    Swedish Museum of Natural History, Department of Botany. and Geology, Physics and Inorganic Chemistry department, Rey Juan Carlos University, C/ Tulipan s/n, Mostoles, 28933, Madrid, Spain.
    Huhtinen, Seppo
    Herbarium, Biodiversity Unit, University of Turku, FI-20014 Turku, Finland..
    Læssøe, Thomas
    Department of Biology/Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, 2100, København Ø, Denmark.
    Petersen, Jens Henrik
    Mycokey, Nøruplundvej 2, 8400, Ebeltoft, Denmark.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Phylogenetic origins and family classification of typhuloid fungi, with emphasis on Ceratellopsis, Macrotyphula and Typhula (Basidiomycota)2020In: Studies in mycology, ISSN 0166-0616, E-ISSN 1872-9797, Vol. 96, p. 155-184Article in journal (Refereed)
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  • 22.
    Olariaga, Ibai
    et al.
    Swedish Museum of Natural History, Department of Botany.
    Van Vooren, Nicolas
    Carbone, Matteo
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    A monograph of Otidea (Pyronemataceae, Pezizomycetes)2015In: Persoonia, ISSN 0031-5850, E-ISSN 1878-9080, Vol. 35, p. 166-229Article in journal (Refereed)
    Abstract [en]

    The easily recognised genus Otidea is subjected to numerous problems in species identification. A numberof old names have undergone various interpretations, materials from different continents have not been compared andmisidentifications occur commonly. In this context, Otidea is monographed, based on our multiple gene phylogeniesassessing species boundaries and comparative morphological characters (see Hansen & Olariaga 2015). All namescombined in or synonymised with Otidea are dealt with. Thirty-three species are treated, with full descriptions andcolour illustrations provided for 25 of these. Five new species are described, viz. O. borealis, O. brunneoparva,O. oregonensis,O. pseudoleporina and O. subformicarum. Otidea cantharella var. minor and O. onotica var. brevisporaare elevated to species rank. Otideopsis kaushalii is combined in the genus Otidea. A key to the species of Otideais given. An LSU dataset containing 167 sequences (with 44 newly generated in this study) is analysed to placecollections and determine whether the named Otidea sequences in GenBank were identified correctly. Fourty-ninenew ITS sequences were generated in this study. The ITS region is too variable to align across Otidea, but had lowintraspecific variation and it aided in species identifications. Thirty type collections were studied, and ITS and LSUsequences are provided for 12 of these. A neotype is designated for O. cantharella and epitypes for O. concinna,O. leporina and O. onotica, along with several lectotypifications. The apothecial colour and shape, and spore charactersare important for species identification. We conclude that to distinguish closely related or morphologicallysimilar species, a combination of additional features are needed, i.e. the shape of the paraphyses, ectal excipulumstructure, types of ectal excipulum resinous exudates and their reactions in Melzer’s reagent and KOH, tomentumand basal mycelium colours and exudates. The KOH reaction of excipular resinous exudates and basal myceliumare introduced as novel taxonomic characters.

  • 23. Põlme, Sergei
    et al.
    Abarenkov, Kessy
    Henrik Nilsson, R.
    Lindahl, Björn D.
    Clemmensen, Karina Engelbrecht
    Kauserud, Havard
    Nguyen, Nhu
    Kjøller, Rasmus
    Bates, Scott T.
    Baldrian, Petr
    Frøslev, Tobias Guldberg
    Adojaan, Kristjan
    Vizzini, Alfredo
    Suija, Ave
    Pfister, Donald
    Baral, Hans-Otto
    Järv, Helle
    Madrid, Hugo
    Nordén, Jenni
    Liu, Jian-Kui
    Pawlowska, Julia
    Põldmaa, Kadri
    Pärtel, Kadri
    Runnel, Kadri
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Larsson, Karl-Henrik
    Hyde, Kevin David
    Sandoval-Denis, Marcelo
    Smith, Matthew E.
    Toome-Heller, Merje
    Wijayawardene, Nalin N.
    Menolli, Nelson
    Reynolds, Nicole K.
    Drenkhan, Rein
    Maharachchikumbura, Sajeewa S. N.
    Gibertoni, Tatiana B.
    Læssøe, Thomas
    Davis, William
    Tokarev, Yuri
    Corrales, Adriana
    Soares, Adriene Mayra
    Agan, Ahto
    Machado, Alexandre Reis
    Argüelles-Moyao, Andrés
    Detheridge, Andrew
    de Meiras-Ottoni, Angelina
    Verbeken, Annemieke
    Dutta, Arun Kumar
    Cui, Bao-Kai
    Pradeep, C. K.
    FungalTraits: a user-friendly traits database of fungi and fungus-like stramenopiles2020In: Fungal diversity, ISSN 1560-2745, E-ISSN 1878-9129, Vol. 105, no 1, p. 1-16Article in journal (Refereed)
  • 24. Richard, Franck
    et al.
    Bellanger, Jean-Michel
    Clowez, Philippe
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    O’Donnell, Kerry
    Urban, Alexander
    Sauve, Mathieu
    Courtecuisse, Régis
    Moreau, Pierre-Arthur
    True morels (Morchella, Pezizales) of Europe and North America: evolutionary relationships inferred from multilocus data and a unified taxonomy2015In: Mycologia, ISSN 0027-5514, E-ISSN 1557-2536, Vol. 107, no 2Article in journal (Refereed)
  • 25.
    Robert, Vincent
    et al.
    CBS-KNAW Fungal Biodiversity Center, Uppsalalaan 8, 3584CT Utrecht, The Netherlands..
    Vu, Duong
    1CBS-KNAW Fungal Biodiversity Center, Uppsalalaan 8, 3584CT Utrecht, The Netherlands..
    Amor, Ammar Ben Hadj
    CBS-KNAW Fungal Biodiversity Center.
    van de Wiele, Nathalie
    CBS-KNAW Fungal Biodiversity Center.
    Brouwer, Carlo
    CBS-KNAW Fungal Biodiversity Center.
    Jabas, Bernard
    CBS-KNAW Fungal Biodiversity Center.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Crous, Pedro W.
    CBS-KNAW Fungal Biodiversity Centre.
    MycoBank gearing up for new horizons2013In: IMA Fungus, ISSN 2210-6340, E-ISSN 2210-6359, Vol. 4, no 2, p. 371-379Article in journal (Refereed)
  • 26. Schoch, C.L.
    et al.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Finding needles in haystacks: linking scientific names, reference specimens and molecular data for Fungi2014In: Database: The Journal of Biological Databases and Curation, E-ISSN 1758-0463, p. 1-21Article in journal (Refereed)
  • 27.
    Tedersoo, Leho
    et al.
    Institute of Ecology and Earth Sciences, Natural History Museum of Tartu University, 14A Ravila, 50411 Tartu, Estonia.
    Arnold, A. Elizabeth
    School of Plant Sciences, The University of Arizona, 1140 E South Campus Drive, Forbes 303, Tucson, AZ 85721, USA.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Novel aspects in the life cycle and biotrophic interactions in Pezizomycetes (Ascomycota, Fungi)2013In: Molecular Ecology, ISSN 0962-1083, E-ISSN 1365-294X, Vol. 22, p. 1488-1493Article in journal (Refereed)
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  • 28. Wang, Xianghua
    et al.
    Buyck, Bart
    Verbeken, Annemieke
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Revisiting the morphology and phylogeny of Lactifluus with three new lineages from southern China2015In: Mycologia, ISSN 0027-5514, E-ISSN 1557-2536Article in journal (Refereed)
  • 29.
    Wang, Xianghua
    et al.
    Swedish Museum of Natural History, Department of Botany. Current address: Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, P.R. China..
    Huhtinen, Seppo
    Herbarium, Biodiversity Unit, University of Turku, FI-20014 Turku, Finland..
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Multilocus phylogenetic and coalescent-based methods reveal dilemma in generic limits, cryptic species, and a prevalent intercontinental disjunct distribution in Geopyxis (Pyronemataceae s. l., Pezizomycetes): TAXONOMY AND PHYLOGENY OF GEOPYXIS2017In: Mycologia, ISSN 0027-5514, E-ISSN 1557-2536, Vol. 108, no 6, p. 1189-1215Article in journal (Refereed)
    Abstract [en]

     Species limits in the small genus Geopyxis

     are debatable because of problems with interpreting

    the few phenotypic features and poor documentation

    of types. To clarify species boundaries and diversity,

    we studied the morphology of 74 specimens of Geopyxis

     from the Northern Hemisphere, including five types,

    and sequenced four loci for 57 representatives: the

    nuc rDNA ITS1-5.8S-ITS2 (ITS), D1-D2 domains of

    nuc 28S rDNA (28S), translation elongation factor

    (tef1 ), and (or) part of the second largest subunit of

    the RNA polymerase II (rpb 2) (5 7 region). Eight species

    are delimited. Six species are shown to be highly

    supported as reciprocally monophyletic: G. aleurioides

     sp. nov., G. alpina  s. l., G. carbonaria , G. delectans , G.

    korfii , and G. majalis . In addition, coalescent-based

    Bayesian species delimitation shows G. alpina  s. l. constitutes

    three cryptic species: G. alpina  s. str., G. deceptiva

     sp. nov., and G. rehmii . ITS-28S sequences of type

    material show that G. vulcanalis  and G. foetida  are synonyms

    of G. carbonaria . A lectotype is designated for

    Humaria delectans  and the name is combined in Geopyxis .

    Morphological characters that can be used to distinguish

    Geopyxis  species are presence/absence of a

    long stipe, spore size and shape, and pigmented resinous

    exudates in medullary and ectal excipulum. Geopyxis

    carbonaria  and G. delectans  produce apothecia

    almost exclusively on burned ground. Bayesian analyses

    detected highly supported conflicts among different

    loci regarding generic delimitation and species

    relationships. Two hypogeous genera, Stephensia  and

    Hydnocystis , are confirmed to nest within Geopyxis . The

    relationships between species of Geopyxis  and Tarzetta ,

    Stephensia shanorii  and Paurocotylis pila , are unresolved.

    Six out of eight species of Geopyxis  recognized in this

    study have intercontinental disjunct distributions.

  • 30. Zamora, J.C.
    et al.
    Hansen, Karen
    Swedish Museum of Natural History, Department of Botany.
    Kosuthova, Alica
    Prieto, Maria
    Swedish Museum of Natural History, Department of Botany.
    Wedin, Mats
    Swedish Museum of Natural History, Department of Botany.
    Considerations and consequences of allowing DNA sequence data as types of fungal taxa2018In: IMA Fungus, ISSN 2210-6340, E-ISSN 2210-6359, Vol. 9, p. 167-175Article in journal (Refereed)
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