Distribution:  Europe: Austria (Lenzenweger 1997), Black Sea (BSPC Editorial Board 2014), Britain (Brook & Johnson 2002, Whitton et al. 2003), Czech Republic (Stastny 2010), France (Kouwets 1999, Anon. 2012), Germany (Täuscher 2014), Ireland (John, Williamson & Guiry 2011), Italy (Abdelahad et al. 2003), Netherlands (Coesel 1997), Portugal (Cambra Sánchez, Álvarez Cobelas & Aboal Sanjurjo 1998), Romania (Caraus 2002, Caraus 2012), Serbia (Fuzinato et al. 2011 ), Slovenia (Vrhovsek et al. 2006), Spain (Cambra Sánchez, Álvarez Cobelas & Aboal Sanjurjo 1998). North America: Arkansas (Smith 2010), North Carolina (Fucikova et al. 2008, Fucikova et al. 2008). South America: Brazil (Araújo et al. 2010, Freitas & Loverde-Oliveira 2013). Asia: China (Hu & Wei 2006). Australia and New Zealand: New South Wales (Day et al. 1995), New Zealand (Croasdale, Flint & Racine 1994, Broady et al. 2012), Northern Territory (Day et al. 1995), South Australia (Day et al. 1995), Victoria (Day et al. 1995).

Freshwater Algae of North America. Ecology and Classification, Academic Press, Elsevier Science (USA), Wehr J.D., Sheath R.G. (eds.), 2003, 918

Checklist of Baltic Sea Phytoplankton Species. Baltic Sea Environment Proceedings No. 95, Helsinki Commission Baltic Marine Environment Protection Commission, Hällfors G., 2004,

Biovolumes and size-classes of phytoplankton in the Baltic Sea, HELCOM Balt.Sea Environ. Proc. No. 106, Olenina I., Hajdu S., Edler L., Andersson A., Wasmund N., Busch S., Göbel J., Gromisz S., Huseby S., Huttunen M., Jaanus A., Kokkonen P., Ledaine I. and Niemkiewicz E., 2006, 1-144