Melville, R. (1967), Contributions to the Flora of Australia: VII. Generic delimitation in the Plagianthus complex. Kew Bulletin 20(3): 515 [comb. nov.]

basionym: Plagianthus helmsii F.Muell. & Tate legitimate

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 113 [nomenclatural synonym]

nomenclatural synonym of: Lawrencia helmsii (F.Muell. & Tate) Lander legitimate

Lander, N.S. (22 January 1985), Revision of the Australian genus Lawrencia Hook. (Malvaceae: Malveae). Nuytsia 5(2): 252 [nomenclatural synonym]

nomenclatural synonym of: Lawrencia helmsii (F.Muell. & Tate) Lander legitimate

Council of Heads of Australasian Herbaria (2012), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Lawrencia helmsii (F.Muell. & Tate) Lander legitimate

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Lawrencia helmsii (F.Muell. & Tate) Lander legitimate

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