Bennett, E.M. (14 November 1972), A revision of the Australian species of Hybanthus Jacquin (Violaceae). Nuytsia 1(3): 228, Fig. 2 (map) [autonym]

taxonomic synonym: Pigea banksiana Ging. ex DC. legitimate taxonomic synonym: Ionidium banksianum (Ging. ex DC.) Steud. legitimate taxonomic synonym: Hybanthus enneaspermus var. banksianus (Ging. ex DC.) Domin legitimate taxonomic synonym: Hybanthus enneaspermus f. angustifolius Domin legitimate

Bennett, E.M. & George, A.S. in Jessop, J.P. (ed.) (1981), Viiolaceae. Flora of Central Australia: 223, Fig. 260 [secondary reference]

nomenclatural synonym: Viola enneasperma L. legitimate

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 210 [secondary reference]

taxonomic synonym: Hybanthus enneaspermus var. banksianus (Ging. ex DC.) Domin legitimate

Adams, L.G. & George, A.S. in George, A.S. (ed.) (1982), Violaceae. Flora of Australia 8: 103, Map 107 [secondary reference]

taxonomic synonym: Pigea banksiana Ging. ex DC. legitimate taxonomic synonym: Ionidium banksianum (Ging. ex DC.) Steud. legitimate taxonomic synonym: Hybanthus enneaspermus f. angustifolius Domin legitimate taxonomic synonym: Hybanthus enneaspermus var. banksianus (Ging. ex DC.) Domin legitimate

Stanley, T.D. in Stanley, T.D. & Ross, E.M. (1986), Violaceae. Flora of South-eastern Queensland 2: 100 [secondary reference]

taxonomic synonym: Hybanthus enneaspermus var. banksianus (Ging. ex DC.) Domin legitimate taxonomic synonym: Hybanthus enneaspermus f. angustifolius Domin legitimate

James, T.A. in Harden, G.J. (ed.) (1990), Violaceae. Flora of New South Wales 1: 440 [secondary reference]

Koch, B.L. in Wheeler, J.R. (ed.) (1992), Violaceae. Flora of the Kimberley Region: 243 [secondary reference]

Hyland, B.P.M., Gray, B. & Elick, R.W. in Cooper, W.E. & Cooper, W.T. (1994), Appendix I: Provisional Species List. Fruits of the Rainforest: 313 [secondary reference]

Kenneally, K.F., Edinger, D.C. & Willing, T. (1996), Broome and Beyond. Plants and people of the Dampier Peninsula, Kimberley, Western Australia: 198 [secondary reference]

common name: Blue Spadeflower [n/a] common name: Blue Fairy's Aprons [n/a]

Williams, K.A.W. (1999), Native Plants of Queensland 4: 230 [secondary reference]

Harden, G.J. & Murray, L.J. in Harden, G.J. & Murray, L.J. (ed.) (2000), Flora of New South Wales Supplement 1: 60 [nomenclatural synonym]

nomenclatural synonym of: Hybanthus enneaspermus (L.) F.Muell. legitimate

James, T.A. in Harden, G.J. (ed.) (2000), Violaceae. Flora of New South Wales Revised Edition 1: 440 [secondary reference]

Jessup, L.W. (22 April 2002), Flora of South-eastern Queensland Volume 2 Changes to names or status of taxa: - [nomenclatural synonym]

nomenclatural synonym of: Hybanthus enneaspermus (L.) F.Muell. legitimate

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

nomenclatural synonym of: Hybanthus enneaspermus (L.) F.Muell. legitimate

Council of Heads of Australasian Herbaria (2010), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Hybanthus enneaspermus (L.) F.Muell. 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: 29 [nomenclatural synonym]

nomenclatural synonym of: Pigea enneasperma (L.) P.I.Forst. legitimate

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Afrohybanthus enneaspermus (L.) Flicker legitimate

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