Randell, B.R. (19 December 1989), Revision of Cassiinae in Australia 2. Senna Miller sect. Psilorhegma (J.Vogel) Irwin & Barneby. Journal of the Adelaide Botanic Gardens 12(2): 236 [comb. nov.]

basionym: Cassia helmsii Symon legitimate taxonomic synonym: Cassia sturtii var. tomentosa Benth. legitimate taxonomic synonym: Cassia desolata var. involucrata (J.M.Black) J.M.Black legitimate taxonomic synonym: Cassia sturtii var. involucrata J.M.Black legitimate

Randell, B.R. in Harden, G.J. (ed.) (1991), Senna. Flora of New South Wales 2: 320 [secondary reference]

nomenclatural synonym: Cassia helmsii Symon legitimate common name: Blunt-leaved Cassia [n/a]

Randell, B.R. & Barlow, B.A. in McCarthy, P.M. (ed.) (1998), Senna. Flora of Australia 12: 107 [nomenclatural synonym]

nomenclatural synonym of: Senna form taxon 'helmsii' [n/a]

Williams, K.A.W. (1999), Native Plants of Queensland 4: 100 [secondary reference]

nomenclatural synonym: Cassia helmsii Symon legitimate

Wiecek, B. in Harden, G.J. (ed.) (2002), Senna. Flora of New South Wales Revised Edition 2: 375 [taxonomic synonym]

taxonomic synonym of: Senna form taxon 'helmsii' [n/a]

Council of Heads of Australasian Herbaria (2005), Australian Plant Census: - APC [secondary reference]

nomenclatural synonym: Cassia helmsii Symon legitimate nomenclatural synonym: Senna form taxon 'helmsii' [n/a] taxonomic synonym: Cassia sturtii var. tomentosa Benth. legitimate taxonomic synonym: Cassia sturtii var. involucrata J.M.Black legitimate taxonomic synonym: Cassia desolata var. involucrata (J.M.Black) J.M.Black legitimate

• APC Dist.: WA, NT, SA, Qld, NSW

Moore, P. (2005), A guide to plants of inland Australia: 78 (photo, map) [secondary reference]

nomenclatural synonym: Cassia helmsii Symon legitimate taxonomic synonym: Senna form taxon 'helmsii' [n/a] common name: Helms' Cassia [n/a] common name: Blunt-leaved Cassia [n/a]

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