McDonald, M.W. (13 May 2003), Revision of Acacia tumida (Leguminoseae: Mimosoideae) and close allies, including the description of three rare taxa. Australian Systematic Botany 16(2): 158-160, Figs 7 (map), 12 [tax. nov.]

• Type: site 3, under cliff at Mount Trafalgar, 14.vi.1987, K. F. Kenneally 10404 and B.P.M. Hyland (holo-, PERTH; iso: CANB, DNA, K, NSW).

Pedley, L. (3 December 2003), A synopsis of Racosperma C.Mart. (Leguminosae: Mimosoideae). Austrobaileya 6(3): 491 [basionym]

basionym of: Racosperma tumidum var. extentum (M.W.McDonald) Pedley legitimate

Council of Heads of Australasian Herbaria (2006), Australian Plant Census: - [secondary reference]

nomenclatural synonym: Racosperma tumidum var. extentum (M.W.McDonald) Pedley legitimate

• APC Dist.: WA

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

nomenclatural synonym: Racosperma tumidum var. extentum (M.W.McDonald) Pedley legitimate taxonomic synonym: Acacia tumida var. extenta M.W.McDonald & Maslin nom. inval.

• APC Dist.: WA

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