Nardia compressa - a liverwort new to Slovakia found in the Tatra Mountains

Nardia compressa has erroneously been reported from Slovakia on several occasions. These data have been published between 1860 and 1960 from the Tatra Mountains (Western Carpathians) area. It has been mistaken for big, flattened aquatic forms of N. scalaris. In the Polish part of the Tatra Mts, N. compressa has also been reported incorrectly in 1956. This paper presents the first record of Nardia compressa in Slovakia (Western Tatra Mts) as well as characteristics of diagnostic features of this species.