Reynolds, S.T. & Halford, D.A. in Henderson, R.J.F. (ed.) (1997), Rubiaceae. Queensland Plants: Names and Distribution: 183 [primary reference]

Forster, P.I. & Halford, D.A. in Henderson, R.J.F. (ed.) (2002), Rubiaceae. Names and Distribution of Queensland Plants, Algae and Lichens: 177 [secondary reference]

Forster, P.I. & Halford, D.A. in Bostock, P.D. & Holland, A.E. (ed.) (2007), Rubiaceae. Census of the Queensland Flora 2007: 179 [secondary reference]

Halford, D.A. & Ford, A.J. (23 November 2009), Coelospermum purpureum Halford & A.J.Ford (Rubiaceae), a new species from north-east Queensland. Austrobaileya 8(1): 70 [taxonomic synonym]

taxonomic synonym of: Coelospermum purpureum Halford & A.J.Ford legitimate

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