Ewart, A.J. & Kerr, L.R. (1926), Contributions to the Flora of Australia, No 32. Additions to the Flora of the Northern Territory. Proceedings of the Royal Society of Victoria 39(1): 3, fig. 2 [tax. nov.]

• Type: "Forrest expedition, 1874 (without locality); towards Alice Springs, Flint, 1882; Gawler Ranges, R.F. Sullivan; Camp 17, S. Australa, R. Helms (Elder expl. exped.), 1891; Tarella, W. Bäuerlen, No. 116, 1887; Cobar, N.S.W., J.M. Curran, 1887; Mt. Watson, near Birkgate River, R. Helms; Taylor Range, N.T., A.J.E., June, 1924."

• Comment: nom. illeg., non G.Don (1832) nec Roxb. (1832).

Black, J.M. (January 1948), Casuarinaceae-Euphorbiaceae. Flora of South Australia Edn. 2, 2: 462 [taxonomic synonym]

taxonomic synonym of: Indigofera brevidens var. uncinata Benth. legitimate

Eichler, Hj. (1965), Supplement to J.M.Black's Flora of South Australia (Second Edition, 1943-1957): 190 [doubtful taxonomic synonym]

doubtful taxonomic synonym of: Indigofera brevidens var. uncinata Benth. legitimate

Wilson, Peter G. (13 March 1987), Taxonomic notes on some Australian species of Indigofera (Fabaceae - Faboideae). Journal of the Adelaide Botanic Gardens 10(1): 119 [secondary reference]

• Lectotype: "Mt Watson near Birksgate Range (Camp 17, Elder Exploring Expedition), R. Helms, 8.vii.1891 (AD 97310107)."

Wilson, Peter G. (13 March 1987), Taxonomic notes on some Australian species of Indigofera (Fabaceae - Faboideae). Journal of the Adelaide Botanic Gardens 10(1): 119 [replaced synonym]

replaced synonym of: Indigofera helmsii Peter G.Wilson legitimate

Green, J.W. (18 October 1987), Census of the Vascular Plants of Western Australia Edn. 2, Suppl. 5: 9 [secondary reference]

Wilson, Peter G. in Harden, G.J. (ed.) (1991), Indigofera. Flora of New South Wales 2: 408 [nomenclatural synonym]

nomenclatural synonym of: Indigofera helmsii Peter G.Wilson legitimate

Wilson, Peter G. in Harden, G.J. (ed.) (2002), Indigofera. Flora of New South Wales Revised Edition 2: 568 [nomenclatural synonym]

nomenclatural synonym of: Indigofera helmsii Peter G.Wilson legitimate

Wilson, Peter G. & Rowe, R. (20 December 2010), New taxa and typifications in Indigofera (Fabaceae) for South Australia. Journal of the Adelaide Botanic Gardens 24: 71 [nomenclatural synonym]

nomenclatural synonym of: Indigofera helmsii Peter G.Wilson legitimate

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

nomenclatural synonym of: Indigofera helmsii Peter G.Wilson legitimate

Wilson, Peter G. & Rowe, R. (21 December 2012), Two new species of Indigofera (Fabaceae: Faboideae) from Western Queensland. Telopea 14: 94 [pro parte taxonomic synonym]

pro parte taxonomic synonym of: Indigofera erubescens Peter G.Wilson & Rowe legitimate

---