• Stephanodiscus dubius: Hustedt (1928)
• Cyclotella dubia: Fricke (1900)

Cosmopolitan, freshwater species.

Distribution:  as Stephanodiscus dubius Hustedt
Europe: Romania (Caraus 2012), Spain (Aboal 1988a).

as Cyclostephanos dubius (Fricke) Round
Europe: Britain (Whitton et al. 2003), Denmark (Bradshaw & Anderson 2003), Finland (Weckstrom & Juggins 2006), Poland (Zelazna-Wieczorek 2011), Romania (Caraus 2012), Spain (Pérez, Maidana & Comas 2009). Asia: Korea (Joh 2010). Australia and New Zealand: New Zealand (Harper et al. 2012).

Coastal diatom-environment relationships from the Gulf of Finland, Baltic Sea ., Journal of Phycology 42:, Weckstrom K., Juggins S., 2006, 21-35.

Phylum Ochrophyta: brown and golden-brown algae, diatoms, silicioflagellates, and kin., In: New Zealand inventory of biodiversity. Volume Three. Kingdoms Bacteria, Protozoa, Chromista, Plantae, Fungi. (Gordon, D.P. Eds), Christchurch: Canterbury University Press., Harper M.A., Cassie Cooper V., Chang F.H., Nelson W.A. e Broady P.A., 2012, 114-163

Algae of Romania. A distributional checklist of actual algae. Version 2.3 third revision., Bacau: Univ. Bacau., Caraus I., 2012,

A coded list of freshwater algae of the British Isles. Second Edition., World-wide Web electronic publication, Whitton B.A., John D.M., Kelly M.G., Haworth E.Y., 2003,

Environmental factors that control the abundance of Cyclostephanos dubius (Bacillariophyceae)in Danish lakes, from seasonal to century scale., European Journal of Phycology 38:, Bradshaw E.G., Anderson N.J., 2003, 265-276

Diatom flora in springs of Lódz Hills (Central Poland). Biodiversity, taxonomy and temporal changes of epipsammic diatom assemblages in springs affected by human impact., A.R.G. Gantner Verlag K.G, Zelazna-Wieczorek J., 2011, 1 - 419

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

Süßwasserflora von Mitteleuropa, Bd. 02/3: Bacillariophyceae Teil 3: Centrales, Fragilariaceae, Eunotiaceae, Gustav Fisher Verlag: Stuttgard, Krammer K., Lange-Bertalot H., 1991,

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

Diatomées de cours d'eau saumâtres temporaires ou permanents du SE de l'Espagne., Mém. Soc. Roy. Bot. Belg. 10:, Aboal M., 1988, 48-54.

Phytoplancton composition of the Ebro River estuary, Spain., Acta Botanica Croatica 68:, Pérez M.C., Maidana N.I., Comas A., 2009, 11-27

Algal flora of Korea. Volume 3, Number 1. Chrysophyta: Bacillariophyceae: Centrales. Freshwater diatoms I., Incheon: National Institute of Biological Resources, Joh G., 2010, 1-161