Jones, D.L. (June 2009), Five threatened new species of Hymenochilus (Orchidaceae) from southern Australia. The Orchadian 16(4): 182-183, Fig. 4 [tax. nov.]

• Type: Victoria, Woorndoo-Dundonnell Road (precise locality withheld), 11 Oct. 1997, D.L.Jones 15592 & E.Foster (holo CANB).

Backhouse, G.N. (2010), New combinations in the terrestrial orchid genera Caladenia R.Br., Corybas Salisb. and Pterostylis R.Br. (Orchidaceae) for south-eastern Australia. The Victorian Naturalist 127(2): 57 [basionym]

basionym of: Pterostylis spissa (D.L.Jones) G.N.Backh. legitimate

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

nomenclatural synonym of: Pterostylis spissa (D.L.Jones) G.N.Backh. legitimate

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 552 [secondary reference]

nomenclatural synonym: Pterostylis spissa (D.L.Jones) G.N.Backh. legitimate common name: Cygnet Greenhood [n/a]

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