Bailey, F.M. (February 1893), Contributions to the Queensland flora. Botany Bulletin. Department of Agriculture, Queensland 7: 65 [tax. nov.]

• Type: "Barron River, E. Cowley."

Bailey, F.M. (1913), Comprehensive Catalogue of Queensland Plants: 325, Fig. 303 [secondary reference]

Ngan, Phung Trung (1965), A revision of the genus Wrightia (Apocynaceae). Annals of the Missouri Botanical Garden 52: 137 [basionym]

basionym of: Wrightia laevis subsp. millgar (F.M.Bailey) Ngan legitimate

Hyland, B.P.M. (1971), A key to the common rainforest trees between Townsville and Cooktown, based on leaf and bark features: 21, Code 72 [secondary reference]

common name: Millgar [n/a]

Forster, P.I. in Orchard, A.E. (ed.) (1996), Apocynaceae. Flora of Australia 28: 191 [nomenclatural synonym]

nomenclatural synonym of: Wrightia laevis subsp. millgar (F.M.Bailey) Ngan legitimate

Cooper, W.E. & Cooper, W.T. (2004), Fruits of the Australian Tropical Rainforest: 56 [nomenclatural synonym]

nomenclatural synonym of: Wrightia laevis subsp. millgar (F.M.Bailey) Ngan legitimate

Council of Heads of Australasian Herbaria (2006), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Wrightia laevis Hook.f. legitimate

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