Gibbons, K.L. (June 2020), Hedyotis, Oldenlandia and related genera (Rubiaceae: Spermacoceae) in Australia: New genera and new combinations in an Asian-Australian-Pacific lineage. Taxon 69(3): 531-532 [comb. nov.]

basionym: Hedyotis argillacea Halford legitimate nomenclatural synonym: Oldenlandia argillacea (Halford) Halford legitimate

Brown, G.K. & Bostock, P.D. (December 2020), Appendix A: New names and name and status changes 2019 to 2020. Introduction to the Census of the Queensland Flora 2020: 17 [secondary reference]

nomenclatural synonym: Oldenlandia argillacea (Halford) Halford legitimate

Percy-Bower, J.M. & Parker, C.M. (24 June 2021), Updates to Western Australia’s vascular plant census for 2020. Nuytsia 32: 15 [secondary reference]

nomenclatural synonym: Oldenlandia argillacea (Halford) Halford legitimate

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