Wilson, Paul G. (10 December 1970), A taxonomic revision of the genera Crowea, Eriostemon and Phebalium (Rutaceae). Nuytsia 1(1): 33-34, Fig. 2 (7,8), Map 9 [tax. nov.]

• Type: "C.A. Gardner 5006, nr. Jerramungup, Sept. 1939 (PERTH)."

pro parte misapplication: Eriostemon difformis var. teretifolius Benth. legitimate by Bentham, G. (30 May 1863), Flora Australiensis 1: 335

• Etymology: "after C. A. Gardner, Government Botanist of Western Australian [sic] 1929-60"

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 104 [secondary reference]

Wilson, Paul G. (16 September 1998), A taxonomic review of the genera Eriostemon and Philotheca (Rutaceae: Boronieae). Nuytsia 12(2): 252 [basionym]

basionym of: Philotheca gardneri (Paul G.Wilson) Paul G.Wilson legitimate

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

nomenclatural synonym of: Philotheca gardneri (Paul G.Wilson) Paul G.Wilson legitimate

Wilson, Paul G. in Wilson, A.J.G. (ed.) (2013), Philotheca. Flora of Australia 26: 381 [nomenclatural synonym]

nomenclatural synonym of: Philotheca gardneri (Paul G.Wilson) Paul G.Wilson legitimate

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

nomenclatural synonym of: Philotheca gardneri (Paul G.Wilson) Paul G.Wilson legitimate

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