Western Australian Herbarium (2007), FloraBase: the Western Australian Flora Version 2.5: - [primary reference]

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Indigofera sp. Cuspidata (Peter G.Wilson & E.Thoma PGW 1776) WA Herbarium [n/a]

Biggs, L.J. & Parker, C.M. (21 November 2013), Updates to Western Australia's vascular plant census for 2012. Nuytsia 23: 513 [taxonomic synonym]

taxonomic synonym of: Indigofera sp. Cuspidata (Peter G.Wilson & E.Thoma PGW 1776) WA Herbarium [n/a]

Wilson, Peter G. & Rowe, R. (18 September 2015), Additional taxa of Indigofera (Fabaceae: Indigofereae) from the Eremaean Botanical Province, Western Australia. Nuytsia 25: 261 [taxonomic synonym]

taxonomic synonym of: Indigofera cuspidata Peter G.Wilson & Rowe legitimate

Council of Heads of Australasian Herbaria (31 July 2018), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Indigofera cuspidata Peter G.Wilson & Rowe legitimate

---