Merrill, E.D. (1911), Philippine Journal of Science. Section C, Botany 6: 222 [comb. nov.]

basionym: Spermacoce philippensis Willd. ex Spreng. legitimate

Halford, D.A. (9 September 1992), Review of the genus Oldenlandia L. (Rubiaceae) and related genera in Australia. Austrobaileya 3(4): 716-717, Map 13 APC [secondary reference]

nomenclatural synonym: Spermacoce philippensis Willd. ex Spreng. legitimate nomenclatural synonym: Exallage philippinensis (Willd. ex Spreng.) Bremek. legitimate taxonomic synonym: Hedyotis congesta R.Br. ex D.Don legitimate taxonomic synonym: Exallage congesta (R.Br. ex D.Don) Bremek. legitimate misapplication: Hedyotis lapeyrousei Bartl. ex DC. legitimate by Williams, K.A.W. (1987), Native Plants of Queensland 3: 158

• APC Dist.: Qld

Cooper, W.E. & Cooper, W.T. (2004), Fruits of the Australian Tropical Rainforest: 442 [secondary reference]

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