Wilson, Paul G. (7 September 1992), The Classification of Australian species currently included in Helipterum and related genera (Asteraceae: Gnaphalieae): Part 1. Nuytsia 8(3): 402 APC [comb. nov.]

basionym: Pteropogon laevis A.Gray legitimate nomenclatural synonym: Helipterum laeve (A.Gray) Benth. legitimate nomenclatural synonym: Argyrocome laevis (A.Gray) Kuntze legitimate

• APC Dist.: WA, NT, SA, Qld, NSW, Vic

Wilson, Paul G. in Harden, G.J. (ed.) (1992), Rhodanthe. Flora of New South Wales 3: 219 [secondary reference]

taxonomic synonym: Helipterum laeve (A.Gray) Benth. legitimate common name: Smooth Sunray [n/a]

Short, P.S. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Rhodanthe. Flora of Victoria 4: 757, Fig. 148j [secondary reference]

nomenclatural synonym: Pteropogon laevis A.Gray legitimate nomenclatural synonym: Helipterum laeve (A.Gray) Benth. legitimate

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