Regel, E.A. von in Fischer, F.E.L. von & Meyer, C.A.A. von (ed.) (1856), Index Seminum, quae hortus botanicus Imperialis Petropolitanus pro mutua commutatione offert: 39 [tax. nov.]

• Type: (not cited).

Hawkeswood, T.J. (23 December 1987), A taxonomic revision of the genus Calothamnus Labill. (Myrtaceae: Leptospermoideae). Part 1. The 4-merous species. Nuytsia 6(1): 118 [taxonomic synonym]

taxonomic synonym of: Calothamnus quadrifidus R.Br. legitimate

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

taxonomic synonym of: Calothamnus quadrifidus R.Br. legitimate

George, A.S. & Gibson, N. (29 September 2010), A revision of Calothamnus quadrifidus (Myrtaceae). Nuytsia 20: 58 [secondary reference]

orthographic variant: Calothamnus quadrifida β hirsuta Regel orth. var.

George, A.S. & Gibson, N. (29 September 2010), A revision of Calothamnus quadrifidus (Myrtaceae). Nuytsia 20: 58 [taxonomic synonym]

taxonomic synonym of: Calothamnus quadrifidus R.Br. legitimate

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

taxonomic synonym of: Calothamnus quadrifidus R.Br. legitimate

---