Abstract
This paper summarises all available data on the flora of freshwater rhodophytes in Croatia, comprising 18 species from 13 genera—Audouinella, Bangia, Batrachospermum, Chroodactylon, Compsopogon, Hildenbrandia, Lemanea, Paralemanea, Pneophyllum, Polysiphonia, Porphyridium, Sirodotia and Thorea. Presented data are mostly a result of a comprehensive survey undertaken from 2009 to 2019 and including more than 600 freshwater locations—channels, streams, rivers, natural and artificial lakes. Additionally, all available published historical data, dating from 1890 onwards, as well as herbarium material from the ZA collection was overviewed and included in this study.