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The present work is the result of an over 30 years extensive study of discomycetes, a former taxonomic class of Ascomycete fungi, recognized in the family Orbiliaceae, which was previously considered as a comparatively small group within the Helotiales but later raised to the level of a class. This study resulted in the recognition of worldwide ~470 species with a known teleomorph, 331 of which being validly described here as new to science. The authors also propose 38 new combinations and 2 nomina nova, and designate 33 epitypes, 39 lectotypes, 3 neotypes, and 4 reference specimens, including some misplaced species now referred to other classes.
![Ferrantia, Volume 86: Beobachtungen zur Entwicklung der Wasservogelwelt nach der Renaturierung der Sauer unterhalb von Steinheim [Observations on the Development of Waterfowl after the Ecological Restoration of the Sauer below Steinheim]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/26/265043.jpg?height=150&width=106)
![Ferrantia, Volume 84: Atlas des Fourmis Luxembourgeoises (Hymenoptera, Formicidae) [Atlas of Luxembourg Ants]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/26/265002.jpg?height=150&width=106)
![Ferrantia, Volume 61: Verbreitung der Zikaden des Großherzogtums Luxemburg: Atlasband [Distribution of Cicads in the Grand Duchy of Luxembourg: Atlas Volume]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/21/215141.jpg?height=150&width=106)
![Ferrantia, Volume 70: Verbreitungsatlas der Weberknechte des Großherzogtums Luxemburg [Distribution Atlas of the Harvestmen of the Grand Duchy of Luxembourg]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/21/214555.jpg?height=150&width=106)
![Ferrantia, Volume 57: Die Waldgesellschaften Luxemburgs: Vegetation, Standort, Vorkommen und Gefährdung [The Wood Plant Communities of Luxembourg: Vegetation, Location, Occurrence and Endangerment]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/21/215152.jpg?height=150&width=106)
![Ferrantia, Volume 78: Verbreitungsatlas der Reptilien des Großherzogtums Luxemburg [Distribution Atlas of the Reptiles of the Grand Duchy of Luxembourg]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/24/242444.jpg?height=150&width=106)
![Ferrantia, Volume 40: Les Macrolichens de Belgique, du Luxembourg et du Nord de la France: Clés de Détermination [The Macro Lichens of Belgium, Luxembourg and the North of France: Identification Keys]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/21/215208.jpg?height=150&width=106)
![Ferrantia, Volume 47: Verbreitungsatlas der Libellen des Großherzogtums Luxemburg [Distribution Atlas of the Dragonflies of the Grand Duchy of Luxembourg]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/21/215197.jpg?height=150&width=106)
![Ferrantia, Volume 75: Verbreitungsatlas der Amphibien des Großherzogtums Luxemburg [Distribution Atlas of the Amphibians of the Grand Duchy of Luxembourg]](http://mediacdn.nhbs.com/jackets/jackets_resizer_medium/23/233252.jpg?height=150&width=106)
