Linnaeus, C. (1 May 1753), Species Plantarum 2: 632 [tax. nov.]

Fischer, E. in Kubitzki, K. (ed.) (2004), Scrophulariaceae. The Families and Genera of Vascular Plants 7: 408 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 16 [secondary reference]

Council of Heads of Australasian Herbaria (2010), Australian Plant Census: - APC [secondary reference]

• APC Dist.: NT

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