Steetz, J. in Lehmann, J.G.C. (ed.) (1846), Buttneriaceae. Plantae Preissianae 2(2-3): 333 [tax. nov.]

• Type: (not designated).

Bentham, G. (30 May 1863), Flora Australiensis 1: 250 [basionym]

basionym of: Thomasia sect. Rhynchostemon (Steetz) Benth. legitimate

Bentham, G. (30 May 1863), Flora Australiensis 1: 248 [taxonomic synonym]

taxonomic synonym of: Thomasia J.Gay legitimate

Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 16 [taxonomic synonym]

taxonomic synonym of: Thomasia J.Gay legitimate

Mueller, F.J.H. von (December 1889), Second Systematic Census of Australian Plants: 28 [taxonomic synonym]

taxonomic synonym of: Thomasia J.Gay legitimate

Council of Heads of Australasian Herbaria (2008), Australian Plant Census: - [secondary reference]

orthographic variant: Rhyncostemon Benth. orth. var.

Council of Heads of Australasian Herbaria (2008), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Thomasia J.Gay legitimate

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