The present volume is a supplement volume to Poelt & Zwetko (1997) “The Rust Fungi of Austria”. It comprises additions, corrections, and a new list of host plants and their rust parasites. Synonyms are linked to accepted names in the register. Additional species for Austria are Puccinia asperulina, P. asperulae-aparines, P. corvarensis, P. dolomitica, P. oxalidis und Uromyces cristulatus. This brings the number of definitely documented rusts in Austria to 491 species in 33 genera. Three additional new rusts (Puccinia sp. Auf Scozonera hispanica, P. sp. auf Seseli camestre und S. osseum sowie Uredo sp. Auf Carex curvula) at present can not be assigned to any known taxon. In addition, the volume records a number of new hosts for Austria. Rust taxa with doubtful records for Austria and taxa occurring in neighbouring countries and to be expected for Austria are also listed.
