Halford, D.A. (21 August 1990), Six new species of Hedyotis L. (Rubiaceae) from Northern Australia. Austrobaileya 3(2): 208-209, Figs 2, 5C, Map 2 [tax. nov.]

• Type: Queensland. Cook District: Mareeba mining lease, Tinaroo Creek road, c. 15 km SE of Mareeba, 9.6 km off Kennedy Highway, 1 km before Oreiglas Creek crossing, 17°05'S, 145°30'E, 1 May 1972, I.B.Staples 010572/11 (holo: BRI; iso: DNA,K,PERTH)."

• Etymology: Named in honour of Captain J.J. Lacey who worked as a pony express rider in north Queensland and carried the first mail from Cairns to Herberton in 1885.

Koch, B.L. & Halford, D.A. in Wheeler, J.R. (ed.) (1992), Hedyotis. Flora of the Kimberley Region: 916, Fig. 282F [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 laceyi (Halford) Halford legitimate

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

nomenclatural synonym of: Oldenlandia laceyi (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 laceyi (Halford) K.L.Gibbons legitimate

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