Dockrill, A.W. (1 January 1955), Two new terrestrial orchids from the Ravenshoe District. The North Queensland Naturalist 23(110): 4-5 [tax. nov.]

• Type: "Ravenshoe District, North Queensland, 16th April, 1954, in open forest. Leg. W.W. Abell and W.G. McPherson. ... Holotype lodged in the National Herbarium of N.S.W., No. 28476."
• Neotype: "The specific name refers to the keel on the upper surface of the apical third of the labellum."

Dockrill, A.W. (1969), Australian Indigenous Orchids: 150 [taxonomic synonym]

taxonomic synonym of: Pterostylis depauperata F.M.Bailey legitimate

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 121 [taxonomic synonym]

taxonomic synonym of: Pterostylis depauperata F.M.Bailey legitimate

Dockrill, A.W. (1993), Australian Indigenous Orchids Edn. 2, 1: 112 [taxonomic synonym]

taxonomic synonym of: Pterostylis depauperata F.M.Bailey legitimate

Jones, D.L., Clements, M.A. & Molloy, B.P.J. in Banks, D.P. (ed.) (28 November 2002), A synopsis of the subtribe Pterostylidinae. Australian Orchid Research 4: 126 [taxonomic synonym]

taxonomic synonym of: Crangonorchis depauperata (F.M.Bailey) D.L.Jones & M.A.Clem. legitimate

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

taxonomic synonym of: Pterostylis depauperata F.M.Bailey legitimate

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 495 [taxonomic synonym]

taxonomic synonym of: Diplodium depauperatum (F.M.Bailey) M.A.Clem. & D.L.Jones legitimate

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