Jones, D.L. & French, C.J. (2017), Two new small-flowered species of Plumatichilos (Orchidaceae: Pterostylidinae) from Western Australia. Australian Orchid Review 82(4): 38-41, Fig. 2 [tax. nov.]

• Type: "Western Australia. Darling District: Piawaning-Wongan HIlls Rd, 3.4 km from Wongan Hills, 1 Aug. 1983, C.J.French (DLJ 11833) (holo CBG 9706943; iso PERTH)."

• Etymology: "The Latin galgulus, small bird, referring to its smaller status when compared with P. barbatus and an indirect reference to the vernacular of 'Little Bird Orchid'."

Jones, D.L. & French, C.J. (2018), New combinations in the Pterostylidinae. Australian Orchid Review 83(1): 63 [taxonomic synonym]

taxonomic synonym of: Pterostylis galgula D.L.Jones & C.J.French nom. inval.

Jones, D.L. & French, C.J. (2018), New combinations in the Pterostylidinae. Australian Orchid Review 83(4): 55 [basionym]

basionym of: Pterostylis galgula (D.L.Jones & C.J.French) D.L.Jones & C.J.French legitimate

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 590 [secondary reference]

nomenclatural synonym: Pterostylis galgula (D.L.Jones & C.J.French) D.L.Jones & C.J.French legitimate common name: Little Bird Orchid [n/a]

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Pterostylis galgula (D.L.Jones & C.J.French) D.L.Jones & C.J.French legitimate

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