Wilson, Paul G. (10 December 1970), A taxonomic revision of the genera Crowea, Eriostemon and Phebalium (Rutaceae). Nuytsia 1(1): 34-35, Map 7 [tax. nov.]

• Type: "AD 96445067, Western Australia, 1 km N of Lake King township, bush 1–3 ft. high, flower whitish-pink, 16.ix.1964, P. Wilson 3228"

• Etymology: "rhombos = a top, oides = like, after the leaf-shape"

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): 254 [basionym]

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

Wilson, Paul G. in Wilson, A.J.G. (ed.) (2013), Philotheca. Flora of Australia 26: 384 [nomenclatural synonym]

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

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