Mueller, F.J.H. von (1859), Fragmenta Phytographiae Australiae 1(10): 218 [comb. nov.]

basionym: Calopetalon ringens Drumm. ex Harv. legitimate

Bentham, G. (30 May 1863), Flora Australiensis 1: 120-121 [secondary reference]

taxonomic synonym: Calopetalon ringens Drumm. ex Harv. legitimate

Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 7 [secondary reference]

Mueller, F.J.H. von (December 1889), Second Systematic Census of Australian Plants: 12 [secondary reference]

Bennett, E.M. (14 November 1972), New taxa and new combinations in Western Australian Pittosporaceae. Nuytsia 1(3): 268 [nomenclatural synonym]

nomenclatural synonym of: Billardiera ringens (Drumm. ex Harv.) E.M.Benn. legitimate

Cayzer, L.W. & Crisp, M.D. (9 March 2004), Reinstatement and revision of the genus Marianthus (Pittosporaceae). Australian Systematic Botany 17(1): 140-141, Fig. 15 (map) APC [secondary reference]

nomenclatural synonym: Calopetalon ringens Drumm. ex Harv. legitimate nomenclatural synonym: Billardiera ringens (Drumm. ex Harv.) E.M.Benn. legitimate

• APC Dist.: WA

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