Lindley, J. (August 1831), The Genera and Species of Orchidaceous Plants: 130-131 [tax. nov.]

• Type: "Hab. in montibus Sillet, Wallich ; in Uligapur et Kalegung, Hamilton. (hab. s. sp. e Museo Anglo-Indico.)."

Reichenbach, H.G.L. (1855), Generis Pachystomatis Bl. Sciagraphia. Bonplandia 3: 251 [basionym]

basionym of: Pachystoma senile (Lindl.) Rchb.f. legitimate

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 101 [secondary reference]

• Lectotype: "'In Montibus Sillet', H. Bruce ex N. Wallich 3739 (lectotype K-L! here designated, isolectotype K-WALL!)."

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 101 [taxonomic synonym]

taxonomic synonym of: Pachystoma pubescens Blume legitimate

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

taxonomic synonym of: Pachystoma pubescens Blume legitimate

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