Jones, D.L. & Clements, M.A. in Banks, D.P. (ed.) (28 November 2002), A new classification of Pterostylis R.Br. (Orchidaceae). Australian Orchid Research 4: 74 [comb. nov.]

basionym: Pterostylis cycnocephala Fitzg. legitimate

Jeanes, J.A. in Ross, J.H. & Walsh, N.G. (June 2003), Orchidaceae. A Census of the Vascular Plants of Victoria Edn. 7: 23 [nomenclatural synonym]

nomenclatural synonym of: Pterostylis cycnocephala Fitzg. legitimate

Buchanan, A.M. in Buchanan, A.M. (ed.) (2005), A Census of the Vascular Plants of Tasmania Edn. 4: 71 [secondary reference]

Barker, W.R., Barker, R.M., Jessop, J. & Vonow, H. (ed.) (18 March 2005), Census of South Australian Vascular Plants 5th Edition. Journal of the Adelaide Botanic Gardens Supplement 1: 199 [nomenclatural synonym]

nomenclatural synonym of: Pterostylis cycnocephala Fitzg. legitimate

Jones, D.L. (2008), Field Guide to the orchids of the Australian Capital Territory: 148-149 [secondary reference]

common name: Swan Greenhood [n/a]

Council of Heads of Australasian Herbaria (28 February 2018), Australian Plant Census: - [misapplied]

misapplied to: Pterostylis ziegeleri D.L.Jones legitimate by Buchanan, A.M. in Buchanan, A.M. (ed.) (2005), A Census of the Vascular Plants of Tasmania Edn. 4: 71

Council of Heads of Australasian Herbaria (28 February 2018), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Pterostylis cycnocephala Fitzg. legitimate

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 550 [secondary reference]

nomenclatural synonym: Pterostylis cycnocephala Fitzg. legitimate common name: Swan Greenhood [n/a]

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