ABSTRACT: The first part of the preliminary checklist of Agaricales from Croatia is given. It comprises the families Pleurotaceae and Tricholomataceae. 252 species (three of them in a broad sense) belonging to 48 genera are presented. Three genera and 35 species are reported for the first time from Croatia. For each species, the published and unpublished sources of data are given, as well as the collections in which the material is deposited.

KEYWORDS: Basidiomycotina, biodiversity, mycoflora, bibliography

NOMENCLATURAL NOVELTIES:
None.