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The Genus Psathyrella s.l. is the sixth volume in the series of Fungi of Northern Europe. It provides identification keys, descriptions, colour photographs, and drawings of microscopical features of 123 northern European species of Psathyrella sensu lato.
The author has studied these fascinating fungi for decades and has published widely on the subject, including new taxa. Furthermore, in collaboration with Ellen Larsson (GB), the phylogeny has been studied based on DNA sequences. This has led to a new understanding of the genus and has led to the segregation of new species and genera. The volume covers all psathyrelloid taxa irrespective of their current classification except the species of Lacrymaria.
Leif Örstadius resides in Kristianstad in Southern Sweden. He has a special fondness for the steppe-like landscape near his home, where he has studied not least the coprophilous species of the Psathyrellaceae.