Britten, J. in Banks, J. & Solander, D.C. (1900), Illustrations of Australian plants collected in 1770 during Captain Cook's voyage round the world 1: 7, [comb. nov.]

basionym: Ionidium monopetalum Schult. legitimate

• Comment: – provisional name only. Given under CALCEOLARIA Loefl. (1758) nom. rej. non L. (1771) nom. cons.

Domin, K. (1928), Beitrage zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 22(89): 985 [nomenclatural synonym]

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

Bennett, E.M. (14 November 1972), A revision of the Australian species of Hybanthus Jacquin (Violaceae). Nuytsia 1(3): 234 [nomenclatural synonym]

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

Adams, L.G. & George, A.S. in George, A.S. (ed.) (1982), Violaceae. Flora of Australia 8: 104 [nomenclatural synonym]

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

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

nomenclatural 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 [nomenclatural synonym]

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

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