The abbreviation of the journal title "Italian journal of mycology" is "Ital. J. Mycol.". It is the recommended abbreviation to be used for abstracting, indexing and referencing purposes and meets all criteria of the ISO 4 standard for abbreviating names of scientific journals.
The table below outlines in detail the ISO 4 rules and matches to the ISSN maintained list of title word abbreviations (TWA) to derive the abbreviation.
matches the stem "itali-"
matches the word "journal"
Rule 4.3: prepositions shall be omitted from title abbreviations.