Nordstedt, C.F.O (1887), Algologiska småsker ... 4. Utdrag ur ett arbete öfver de af D:r. S. Berggren på Nya Sealand och i Australien samlade sötvattebsakgerna. Botaniska Notiser 1887: 163, no fig. [tax. nov.]

• Type locality: New Zealand

Prescott, G.W., Croasdale, H.T., Vinyard, W.C. & Bicudo, C.E.M. (1981), A Synopsis of North American Desmids; Part II: Desmidiaceae: Placodermae; Section 3: - [secondary reference]

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

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

taxonomic synonym: Penium pachydermum Playfair legitimate

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

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