Bentham, G. (5 January 1867), Orders XLVIII. Myrtaceae- LXII. Compositae. Flora Australiensis 3: 678 [comb. et stat. nov.]

basionym: Picris squarrosa Steetz legitimate

Bailey, F.M. (1913), Comprehensive Catalogue of Queensland Plants: 276 [secondary reference]

Black, J.M. (1929), Bignoniaceae - Compositae. Flora of South Australia 4: 659 [secondary reference]

nomenclatural synonym: Picris squarrosa Steetz legitimate

Black, J.M. & Robertson, E.L. (1957), Flora of South Australia Edn. 2, 4: 941 [secondary reference]

nomenclatural synonym: Picris squarrosa Steetz legitimate

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

nomenclatural synonym of: Picris squarrosa Steetz legitimate

Holzapfel, S. in Wilson, A.J.G. (ed.) (2015), Picris. Flora of Australia 37: 149 [nomenclatural synonym]

nomenclatural synonym of: Picris squarrosa Steetz legitimate

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