Gaertner, J. (1791), De Fructibus et Seminibus Plantarum 2(3): 368 [comb. nov.]

basionym: Picris echioides L. legitimate

Rodway, L. (1903), The Tasmanian Flora: 97 [secondary reference]

Black, J.M. (1929), Bignoniaceae - Compositae. Flora of South Australia 4: 660 [nomenclatural synonym]

nomenclatural synonym of: Picris echioides L. legitimate

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

nomenclatural synonym of: Picris echioides L. legitimate

Curtis, W.M. (1963), Angiospermae: Lythraceae to Epacridaceae. The Student's Flora of Tasmania 2: 383 [nomenclatural synonym]

nomenclatural synonym of: Picris echioides L. legitimate

Holzapfel, S. (1994), A revision of the genus Picris (Asteraceae, Lactuceae) s.l. in Australia. Willdenowia 24: 118 [nomenclatural synonym]

nomenclatural synonym of: Helminthotheca echioides (L.) Holub legitimate

Thompson, I.R. (22 May 2007), A taxonomic treatment of tribe Lactuceae (Asteraceae) in Australia. Muelleria 25: 93 [nomenclatural synonym]

nomenclatural synonym of: Helminthotheca echioides (L.) Holub legitimate

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

orthographic variant: Helmintia echioides Gaertn. orth. var.

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

nomenclatural synonym of: Helminthotheca echioides (L.) Holub legitimate

Holzapfel, S. in Wilson, A.J.G. (ed.) (2015), Helminthotheca. Flora of Australia 37: 141 [nomenclatural synonym]

nomenclatural synonym of: Helminthotheca echioides (L.) Holub legitimate

de Salas, M.F. & Baker, M.L. (2016), Tasmanian vascular plant census. A Census of the Vascular Plants of Tasmania, including Macquarie Island: 17 [nomenclatural synonym]

nomenclatural synonym of: Helminthotheca echioides (L.) Holub legitimate

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