Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 6 [primary reference]

Council of Heads of Australasian Herbaria (2005), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Hybanthus monopetalus (Schult.) Domin legitimate

Forster, P.I. (24 March 2021), Reinstatement of Pigea Ging., an earlier generic name for the spade flowers previously included in Afrohybanthus Flicker (Violaceae). Austrobaileya 11: 31 [taxonomic synonym]

taxonomic synonym of: Pigea monopetala (Schult.) Ging. ex DC. legitimate

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