Fissidens fontanus (Bach. Pyl.) Steud.

Alegro, Antun, Šegota, Vedran, Rimac, Anja, Kiebacher, Thomas, Prlić, Dragan, Sedlar, Zorana, Vuković, Nina & Papp, Beata, 2019, New and noteworthy bryophyte records from Croatia, Cryptogamie, Bryologie 20 (2), pp. 5-13 : 8

Fissidens fontanus (Bach. Pyl.) Steud.

SPECIMEN EXAMINED. — Croatia. Banovina Region, Trepča River, 45°27’41’’N, 15°54’35’’E, 126 m a.s.l., 18.IX.2016, leg. and det. A. Rimac s.n., conf. A. Alegro, ZA(ZA45480, ZA45481, ZA45482).

It was frequent on megalithal substrata (> 40 cm in lenght), which formed small cascade, while the abundance was lower downstream, where the substrate was macrolithal (20-40 cm in lenght) and water was less turbulent. This locality is not situated in the Mediterranean part of Croatia. The species was associated with several other aquatic moss species such as Cinclidotus riparius , Fontinalis antipyretica , Leptodictyum riparium (Hedw.) Warnst. , Rhynchostegium riparioides and a significant amount of cyanobacteria from the Oscillatoriales group, which suggests moderately polluted conditions ( Erzberger 2016). Fissidens fontanus is an European Temperate species ( Hill & Preston 1998; Smith 2004) occurring from Mediterranean to Northern Europe ( Smith 2004; Frey et al. 2006). It is rare in SE Europe, known only from Bulgaria ( Natcheva et al. 2006) and Romania ( Stefănuţ & Goia 2012), being CR in both countries ( Natcheva et al. 2006, Stefănuţ & Goia 2012). The species is known also from neighbouring Italy ( Aleffi et al. 2008). Recently, it has been recorded in Greece, on the Lesbos Island ( Blockeel & Nieuwkoop 2016).