Laboulbeniomycetes (Fungi, Ascomycota) of Denmark Author Santamaria, Sergi Unitat de Botànica, Departament de Biologia Animal, de Biologia Vegetal i d’Ecologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès (Barcelona), Spain. sergi.santamaria@uab.cat Author Pedersen, Jan Natural History Museum of Denmark (Zoological Museum), University of Copenhagen, Universitetsparken 15, 2100 København Ø, Denmark. japedersen@snm.ku.dk text European Journal of Taxonomy 2021 2021-11-26 781 1 425 http://dx.doi.org/10.5852/ejt.2021.781.1583 journal article 10.5852/ejt.2021.781.1583 2118-9773 5828924 Genus Helodiomyces F.Picard MB#2266 Bulletin de la Société Mycologique de France 29: 557 ( Picard 1913 ) . – Type species: H. elegans F.Picard (by monotypy). Brief description Monoecious. Receptacle multicelled and uniseriate. Primary appendage subtended by cell VII ( Fig. 2A , VII). Perihecium solitary with a base consisting of two parallel cells (VI and VI’) ( Fig. 2A , VI, VI’). Outer wall of perithecium consisting of four vertical rows of many cells. An extra, short row of cells on the posterior side of the perithecium. Perithecial ostiole surrounded by four slender and rather long ligules ( Fig. 2C , li). Remarks Monotypic. Seems not to be closely related with any other genus of Laboulbeniales .