Wittrock, V.B. & Nordstedt, C.F.O. (1882), Literatur-öfversigt [Literature review]. Algae aquae dulcis exsiccatae praecipue Scandinavicae quas adjectis algis marinis chlorophyllaceis et phycochromaceis. Botanica Notiser: 57 [comb. nov.]

Day, S.A., Wickham, R.P., Entwisle, T.J. & Tyler, P.A. (1995), Bibliographic checklist of non-marine algae in Australia: - [secondary reference]

Tolstoy, A. & Willen, T. (1997), Preliminar checklista over Makroalger i Sverige: - [secondary reference]

Entwisle, T.J. & Nairn, L. (2011), Census of Freshwater Algae in Australia. Edn. Version 1.0: - [secondary reference]

taxonomic synonym: Zygnema alternatum Hassall legitimate taxonomic synonym: Spirogyra orbicularis Kütz. legitimate taxonomic synonym: Spirogyra alternata Kütz. legitimate

• APC Comment: T.J.Entwisle and L.Nairn (2011) use this taxon concept.
• Distribution: New South Wales, Queensland

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