Bentham, G. in Hooker, W.J. (1 August 1836), Synopsis of the Hemimerideae, a tribe of Scropulariaceae. Companion to the Botanical Magazine 2(13): 18 [tax. nov.]

Barker, W.R. in Harden, G.J. (ed.) (1992), Scrophulariaceae. Flora of New South Wales 3: 572 [secondary reference]

Western Australian Herbarium (2007), FloraBase: the Western Australian Flora Version 2.5: - APC [secondary reference]

• APC Dist.: WA (naturalised), SA (doubtfully naturalised), NSW (naturalised)

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