George, A.S. & Gibson, N. (29 September 2010), A revision of Calothamnus quadrifidus (Myrtaceae). Nuytsia 20: 66-67, Figs 1 (map), 5 [comb. et stat. nov.]

basionym: Calothamnus homalophyllus var. angustifolius Ewart legitimate

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

nomenclatural synonym: Calothamnus homalophyllus var. angustifolia Ewart orth. var. nomenclatural synonym: Calothamnus homalophyllus var. angustifolius Ewart legitimate

• APC Dist.: WA

Craven, L.A., Edwards, R.D. & Cowley, K.J. (2014), New combinations and names in Melaleuca (Myrtaceae). Taxon 63(3): 667 [nomenclatural synonym]

nomenclatural synonym of: Melaleuca quadrifida subsp. angustifolia (Ewart) Craven & R.D.Edwards legitimate

Council of Heads of Australasian Herbaria (31 July 2018), Australian Plant Census: - APC [secondary reference]

nomenclatural synonym: Calothamnus homalophyllus var. angustifolius Ewart legitimate nomenclatural synonym: Calothamnus homalophyllus var. angustifolia Ewart orth. var. nomenclatural synonym: Melaleuca quadrifida subsp. angustifolia (Ewart) Craven & R.D.Edwards legitimate

• APC Dist.: WA

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