Puttock, C.F. (10 March 1997), A revision of Gardenia (Rubiaceae) from northern and north-western Australia. Nuytsia 11(2): 231 [nom. et stat. nov.]

• Type: "28 miles [44.8 km] south-east of Newcastle Waters, Barkly Tablelands District, Northern Territory, 8 July 1911, G.F. Hill 498 (holo: MEL)."

replaced synonym: Gardenia megasperma var. arborea Ewart & Cookson legitimate

• Etymology: The species is named after A.J. Ewart who, with O.B. Davies, compiled the first flora of the Northern Territory and gave varietal status to this taxon.

Queensland Herbarium (2003), New plant names and taxa Queensland July 1994-July 2003: 48 [secondary reference]

nomenclatural synonym: Gardenia megasperma var. arborea Ewart & Cookson legitimate taxonomic synonym: Gardenia sp. (Westmoreland Station R.A.Perry 1318) subsp. (Tanumbirini S.T.Blake 17634) [n/a] taxonomic synonym: Gardenia sp. Q5 (megasperma var. arborea) subsp. Q1 (S.T.Blake 17634) [n/a]

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - APC [secondary reference]

nomenclatural synonym: Gardenia megasperma var. arborea Ewart & Cookson legitimate taxonomic synonym: Gardenia sp. (Westmoreland Station R.A.Perry 1318) [n/a] taxonomic synonym: Gardenia sp. (Westmoreland Station R.A.Perry 1318) subsp. (Tanumbirini S.T.Blake 17634) [n/a] taxonomic synonym: Gardenia sp. Q5 (megasperma var. arborea) subsp. Q1 (S.T.Blake 17634) [n/a]

• APC Dist.: WA, NT, Qld

Western Australian Herbarium (2011), FloraBase: the Western Australian Flora Version 2.6: - [secondary reference]

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