Hiern, W.P. in Thiselton-Dyer, W.T. (ed.) (1904), Flora Capensis 4: 121 [tax. nov.]

Barker, R.M. in Jessop, J.P. (ed.) (September 1993), Scrophulariaceae. A list of the vascular plants of South Australia Edn. 4: 81 [secondary reference]

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Polycarena rariflora Benth. legitimate

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