Barker, W.R. in Jessop, J.P. & Toelken, H.R. (ed.) (1986), Scrophulariaceae. Flora of South Australia Edn. 4, 3: 1284, fig. 583C [tax. nov.]

• Type: "summit of Wudinna Hill, which is c. 10 km NE of Wudinna (32° 59 ½′S, 135° 33′E), W. R. Barker 3569, 24.ix.1978 (AD); isotypes: CANB, K, NSW, PERTH."

Barker, R.M. in Jessop, J.P. (ed.) (September 1993), Scrophulariaceae. A list of the vascular plants of South Australia Edn. 4: 80 APC [secondary reference]

• APC Dist.: SA

Threatened Species and Communities Section, Biodiversity Group, Environment Australia (8 July 1998), Endangered Species Protection Act 1992. Schedules 1, 2 & 3: 22 [secondary reference]

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