Mueller, F.J.H. von (1876), Fragmenta Phytographiae Australiae 10(85): 82 [tax. nov.]

• Type: "a Phillip's River usque Cape Arid (Maxw.)"

Bennett, E.M. (14 November 1972), A revision of the Australian species of Hybanthus Jacquin (Violaceae). Nuytsia 1(3): 240 [secondary reference]

• Type: "Crescit a Phillips River usque Cape Arid, Maxwell (holo; MEL)."

Bennett, E.M. (14 November 1972), A revision of the Australian species of Hybanthus Jacquin (Violaceae). Nuytsia 1(3): 240 [taxonomic synonym]

taxonomic synonym of: Hybanthus bilobus C.A.Gardner legitimate

Adams, L.G. & George, A.S. in George, A.S. (ed.) (1982), Violaceae. Flora of Australia 8: 109 [taxonomic synonym]

taxonomic synonym of: Hybanthus epacroides (C.A.Gardner) Melch. legitimate

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

taxonomic synonym of: Hybanthus epacroides (C.A.Gardner) Melch. 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: 30 [taxonomic synonym]

taxonomic synonym of: Pigea epacroides (C.A.Gardner) P.I.Forst. legitimate

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