Halford, D.A. (21 August 1990), Six new species of Hedyotis L. (Rubiaceae) from Northern Australia. Austrobaileya 3(2): 204-206, fig. 1, Map 1 [tax. nov.]

• Type: "Northern Territory. DARWIN & GULF DISTRICT: Edith Falls, 33 km N of Katherine, 14°06'S, 132°12'E, 28 April 1989, D.Halford H75 (holo: BRI; iso: DNA,K,PERTH)."

• Etymology: The specific epithet was chosen to draw attention to the flower size in the species, being the largest flowers of all known Austaralian species.

Koch, B.L. & Halford, D.A. in Wheeler, J.R. (ed.) (1992), Hedyotis. Flora of the Kimberley Region: 916-918, Fig. 282G [secondary reference]

Halford, D.A. (9 September 1992), Review of the genus Oldenlandia L. (Rubiaceae) and related genera in Australia. Austrobaileya 3(4): 708 [basionym]

basionym of: Oldenlandia largiflorens (Halford) Halford legitimate

Western Australian Herbarium (2011), FloraBase: the Western Australian Flora Version 2.6: - [nomenclatural synonym]

nomenclatural synonym of: Oldenlandia largiflorens (Halford) Halford legitimate

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): 534 [basionym]

basionym of: Scleromitrion largiflorens (Halford) K.L.Gibbons legitimate

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