Book ID: 22829
Schneider, Gotthard
Die Flechtengattung Psora sensu Zahlbruckner.- Versuch einer Gliederung.1979.(Bibl.Lichenolog.13).48 figs.18 pls.map. 8 tabs.IV,291 p.8vo.Bound. (ISBN 978-3-7682-1257-1)
Altogether, about 350 collections were investigated. Where possible the type of each taxon was also studied. 4 genera are newly describedi n the present account, and the number of species in each indicated in parentheses: Psorinia (2), Psorula (2), Trapeliopsis (5), andXanthopsora (1).