West, G.S. (1904), A treatise on the British freshwater algae Cambridge Biological Series: 223, fig. 94B-94C [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]

Whitton, B.A., John, D.M., Johnson, L.R., Boulton, P.N.G., Kelly, M.R. & Haworth, E.Y. (1999), A Coded List of Freshwater Algae of the British Isles: - [secondary reference]

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

taxonomic synonym: Rhaphidium aciculare A.Braun legitimate taxonomic synonym: Rhaphidium polymorphum var. aciculare (A.Braun) Rabenh. legitimate

• APC Comment: T.J.Entwisle and L.Nairn (2011) use this taxon concept.

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