Rogers, R.S. (20 December 1930), Contributions to the Orchidology of Papua and Australia. Transactions and proceedings of the Royal Society of South Australia 54: 41 [tax. nov.]

• Type: "Western Australia. Bruce Rock, O.H. Sargent, October, 1929; Bencubbin, R.E. Edmonsen, October, 1929; Dalwalinu, Colonel Gadby, October, 1929."

Nicholls, W.H. (1935), The sun orchids of Australia. Orchidologia Zeylanica 2(4): 158 [secondary reference]

George, A.S. (5 May 1971), A check list of the Orchidaceae of Western Australia. Nuytsia 1(2): 195 [secondary reference]

• Lectotype: "Bruce Rock, O.H.Sargent, Oct. 1929 - lecto.: AD; Bencubbin, R.E. Edmondsen, Oct. 1929 - not seen; Dalwallinu, B.T. Goadby, Oct. 1929 - not seen."

George, A.S. in Jessop, J.P. (ed.) (1981), Orchidaceae ( not Pterostylis). Flora of Central Australia: 515, Fig. 647 [secondary reference]

Hoffman, N. & Brown, A. (1984), Orchids of South-West Australia: 24-25 [secondary reference]

common name: Freckled Sun Orchid [n/a]

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 57 [secondary reference]

Jones, D.L. (1988), Native Orchids of Australia: 303 [secondary reference]

common name: Freckled Sun Orchid [n/a]

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 142 [secondary reference]

Hoffman, N. & Brown, A. (1992), Orchids of South-West Australia Edn. 2: 247 [secondary reference]

common name: Freckled Sun Orchid [n/a]

Hoffman, N. & Brown, A. (1998), Orchids of South-West Australia Edn. 2 (revised): 247 [secondary reference]

common name: Freckled Sun Orchid [n/a]

Paczkowska, G. & Chapman, A.R. (2000), The Western Australian Flora, a descriptive catalogue: 91 [secondary reference]

common name: Freckled Sun Orchid [n/a]

Western Australian Herbarium (2003), FloraBase: the Western Australian Flora Version 2: - [secondary reference]

common name: Freckled Sun Orchid [n/a]

Brown, A., Dundas, P., Dixon, K. & Hopper, S. (2008), Orchids of Western Australia: 316 [secondary reference]

common name: Freckled sun orchid [n/a]

• Etymology: "named for Oswald Sargent"

Hoffman, N. & Brown, A. (2011), Orchids of South-West Australia Edn. 3: 296 [secondary reference]

common name: Freckled Sun Orchid [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: 50, 134 [secondary reference]

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

• APC Dist.: WA

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 451-452 [secondary reference]

common name: Freckled Sun Orchid [n/a]

Brown, A. (19 July 2022), The Complete Orchids of Western Australia 2: 260 [secondary reference]

common name: Freckled Sun Orchid [n/a]

• Etymology: "Named in honour of Oswald Hewlett Sargent, pharmacist from York Western Australia."

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