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 [comb. nov.]

basionym: Hymenochilus spissus D.L.Jones legitimate

Backhouse, G.N., Bates, R.J., Brown, A.P. & Copeland, L.M. (1 March 2016), Checklist of the orchids of Australia including its island territories: 40, 118 [secondary reference]

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

nomenclatural synonym: Hymenochilus spissus D.L.Jones legitimate taxonomic synonym: Pterostylis sp. aff. cycnocephala (Woorndoo) [n/a] taxonomic synonym: Pterostylis sp. aff. cycnocephala 2 [n/a]

• APC Dist.: Vic

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

nomenclatural synonym of: Hymenochilus spissus D.L.Jones legitimate

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