New records and new host for Melampsoridium hiratsukanum (Fungi, Uredinales) in Poland. Fragmenta Floristica et Geobotanica Polonica 8: 245–249. Kraków. PL ISSN 1640 629X. ABSTRACT: Melampsoridium hiratsukanum S. Ito has been recorded in some new localities in Poland. To the previously known two Polish sites the further four are added in the paper, and new host in the Polish population (Alnus glutinosa) is reported. The fungus seems to be a newcomer in Poland and it spreads rapidly in some regions of the country.
An invasive East Asian rust fungus Melampsoridium hiratsukanum, obligate biotroph belonging to Pucciniastraceae, Pucciniales (Basidiomycota) is found widely spread on leaves of Alnus incana in eastern, central and southern parts of Lithuania. On Alnus glutinosa this fungus is rare, sometimes occurring with an alder leaf pest, a microscopic eriophyid gall mite Acalitus brevitarsus. Information on the distribution patterns, ecological and morphological characters of this neomycete is given.