Janes, J.K. & Duretto, M.F. (31 August 2010), A new classification for subtribe Pterostylidinae (Orchidaceae), reaffirming Pterostylis in the broad sense. Australian Systematic Botany 23(4): 262 [comb. nov.]

basionym: Hymenochilus sinuatus D.L.Jones legitimate

Hoffman, N. & Brown, A. (2011), Orchids of South-West Australia Edn. 3: 419 [secondary reference]

common name: Western Swan Greenhood [n/a] common name: Northampton Midget Greenhood [n/a]

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, 132 [secondary reference]

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

nomenclatural synonym: Hymenochilus sinuatus D.L.Jones legitimate taxonomic synonym: Pterostylis sp. (Northampton) S.D.Hopper 3349 [n/a] taxonomic synonym: Pterostylis aff. cycnocephala [n/a] taxonomic synonym: Pterostylis aff. cycnocephala [n/a] taxonomic synonym: Pterostylis sp. Northampton (S.D.Hopper 3349) [n/a] taxonomic synonym: Pterostylis sp. Northampton (S.D.Hopper 3349) [n/a] taxonomic synonym: Oligochaetochilus sp. Northampton (S.D.Hopper 3349) [n/a] taxonomic synonym: Pterostylis sp. 8 (Northampton) [n/a] taxonomic synonym: Pterostylis sp. (S.D.Hopper 3349; Northampton) [n/a] taxonomic synonym: Pterostylis sp. Northampton (S.D.Hopper 3349) WA Herbarium [n/a] taxonomic synonym: Pterostylis sp. 'Northampton' [n/a] pro parte taxonomic synonym: Pterostylis sp. 'short sepals' [n/a] pro parte misapplication: Pterostylis cycnocephala Fitzg. legitimate by Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 121 misapplication: Pterostylis cycnocephala Fitzg. legitimate by Hnatiuk, R.J. (ed.) (1990), Census of Australian Vascular Plants: 433

• APC Dist.: WA

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

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

Brown, A. (19 July 2022), The Complete Orchids of Western Australia 2: 140 [secondary reference]

common name: Western Swan Greenhood [n/a] common name: Northampton Midget Greenhood [n/a]

• Etymology: "From the Latin sinuatus (strongly waved), in reference to the wavy-margined leaves."

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