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): 399 [comb. nov.]

basionym: Xyridanthe stricta Lindl. legitimate nomenclatural synonym: Helipterum strictum (Lindl.) Benth. legitimate taxonomic synonym: Pteropogon platyphyllus F.Muell. legitimate taxonomic synonym: Helipterum strictum var. stenocephala S.Moore legitimate

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

taxonomic synonym: Helipterum strictum (Lindl.) Benth. legitimate common name: Slender Sunray [n/a]

Short, P.S. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Rhodanthe. Flora of Victoria 4: 756, Fig. 148e [secondary reference]

nomenclatural synonym: Xyridanthe stricta Lindl. legitimate nomenclatural synonym: Helipterum strictum (Lindl.) Benth. legitimate

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

nomenclatural synonym: Xyridanthe stricta Lindl. legitimate nomenclatural synonym: Helipterum strictum (Lindl.) Benth. legitimate nomenclatural synonym: Argyrocome stricta (Lindl.) Kuntze legitimate nomenclatural synonym: Helipterum strictum (Lindl.) Benth. var. strictum legitimate taxonomic synonym: Pteropogon platyphyllus F.Muell. legitimate taxonomic synonym: Helipterum strictum var. stenocephala S.Moore legitimate

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

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