 In 1956, while still a researcher at the Federal Institute, Moser began lecturing on microbiology at the University of Innsbruck, with the title of "Privatdozent". During this time, he continued to publish. His monograph on the genus Phlegmacium, a taxon now considered to be part of Cortinarius, was published in 1960 as part of Die Pilze Mitteleuropas series. 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, the genus 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 a number of coloured plates, 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". 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".
