Backhouse, G.N. (2010), New combinations in the terrestrial orchid genera Caladenia R.Br., Corybas Salisb. and Pterostylis R.Br. (Orchidaceae) for south-eastern Australia. The Victorian Naturalist 127(2): 56 [comb. nov.]

basionym: Hymenochilus crassicaulis D.L.Jones & M.A.Clem. legitimate

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: 37, 64, 75, 117 [secondary reference]

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

nomenclatural synonym: Hymenochilus crassicaulis D.L.Jones & M.A.Clem. legitimate taxonomic synonym: Pterostylis sp. aff. cycnocephala (Alpine) [n/a] taxonomic synonym: Pterostylis sp. aff. cycnocephala 1 [n/a] taxonomic synonym: Hymenochilus sp. Alpine (D.L.Jones 16215) [n/a]

• APC Comment: Treated as Hymenochilus crassicaulis in the ACT.
• APC Dist.: NSW, ACT, Vic

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 550 [nomenclatural synonym]

nomenclatural synonym of: Hymenochilus crassicaulis D.L.Jones & M.A.Clem. legitimate

---