Ostenfeld, C.E.H. (1921), Contributions to West Australian Botany, part III : Additions and notes to the flora of extra-tropical W. Australia. Biologiske meddelelser, Kongelige Danske Videnskabernes Selskab 3(2): 43-44, Fig. 2 [tax. nov.]

• Type: "Yallingup Cave, in open forest (No. 225; 26 Sept. 1914)."

• Etymology: "I have named it after my daughter Miss Gertrud H. Ostenfeld who has assisted me by drawing several of my specimens of W. Australian plants."

George, A.S. (5 May 1971), A check list of the Orchidaceae of Western Australia. Nuytsia 1(2): 171 [secondary reference]

• Type: "Yallingup Cave, Ostenfeld, Sept. 26, 1914-iso.:K."

George, A.S. (5 May 1971), A check list of the Orchidaceae of Western Australia. Nuytsia 1(2): 171 [taxonomic synonym]

taxonomic synonym of: Caladenia gemmata Lindl. f. gemmata legitimate

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 25 [secondary reference]

• Type: "... holo C..."

Hopper, S.D. & Brown, A.P. (June 2000), New genera , subgenera, combinations, and species in the Caladenia alliance (Orchidaceae: Diurideae). Lindleyana 15(2): 123 [basionym]

basionym of: Cyanicula gertrudae (Ostenf.) Hopper & A.P.Br. legitimate

Szlachetko, D.L. (28 February 2001), Genera et species Orchidalium. 1. Polish Botanical Journal 46(1): 20 [basionym]

basionym of: Pentisea gertrudae (Ostenf.) Szlach. legitimate

Hopper, S.D. & Brown, A.P. (29 April 2004), Robert Brown's Caladenia revisited, including a revision of its sister genera Cyanicula, Ericksonella and Pheladenia (Caladeniinae: Orchidaceae). Australian Systematic Botany 17(2): 220 [nomenclatural synonym]

nomenclatural synonym of: Cyanicula gertrudae (Ostenf.) Hopper & A.P.Br. legitimate

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

nomenclatural synonym of: Cyanicula gertrudae (Ostenf.) Hopper & A.P.Br. legitimate

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 193 [nomenclatural synonym]

nomenclatural synonym of: Cyanicula gertrudae (Ostenf.) Hopper & A.P.Br. legitimate

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