In 1956, while still a researcher at the institute,Horak et al. 2003b, p. 3 Moser began lecturing on microbiology at the University of Innsbruck, with the title of Privatdozent. He continued to publish while teaching. His monograph Die Gattung Phlegmacium (Schleimköpfe) [The Genus Phlegmacium (Slimeheads)] addressed Phlegmacium, at the time considered a genus but now considered part of Cortinarius, and was published in 1960 as part of the series Die Pilze Mitteleuropas [The Fungi of Central Europe].Horak et al. 2003a, p. 507; Singer 1960, p. 823 Unlike the previous three books in the series, which were all written by German authors, the work addressed mushrooms that were of less interest to amateur mycologists; for instance, Phlegmacium was not considered to contain any significant edible species. The book drew upon Moser's expertise concerning mycorrhizal relationships. It listed 166 species, including some "exotic" taxa. Some of the listed species were described for the first time in that volume. The illustrations, which came in the form of coloured plates,Singer 1960, p. 823 were mostly Moser's own work; Singer described these in a review of the book as "both in original execution and reproduction among the best that have been published".Singer 1960, p. 825 Discussing the book as a whole, Singer said that the volume, "outstanding for its good print, attractive appearance, and interesting contents, should be present in every mycological library".
