Brown, R. (27 March 1810), Prodromus florae Novae Hollandiae et insulae Van-Diemen, exhibens characteres plantarum quas annis 1802-1805: 493 [tax. nov.]

Spach, E. (15 August 1838), Histoire Naturelle des Vegetaux. Phanerogames 9: 32 [basionym]

basionym of: Orthostachys (R.Br.) Spach legitimate

Pfeiffer, L.K.G. (1874), Nomenclator Botanicus 2 (1): 534 [secondary reference]

Johnston, I.M. (1928), I. Studies in the Boraginaceae - VII. Contributions of the Gray Herbarium of Harvard University 81: 46 [secondary reference]

• Lectotype: Heliotropium foliatum R.Br.

Craven, L.A. (13 September 1996), A taxonomic revision of Heliotropium (Boraginaceae) in Australia. Australian Systematic Botany 9(4): 554 [secondary reference]

• Lectotype: "fide Johnston, Contr. Gray Herb. 81: 46 (1928): H. foliatum R.Br."

nomenclatural synonym: Orthostachys (R.Br.) Spach legitimate nomenclatural synonym: Heliotropium sect. Schleidenia (Endl.) Benth. legitimate

Craven, L.A. (13 September 1996), A taxonomic revision of Heliotropium (Boraginaceae) in Australia. Australian Systematic Botany 9(4): 533 [taxonomic synonym]

taxonomic synonym of: Heliotropium L. legitimate

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

taxonomic synonym of: Heliotropium L. legitimate

Feuillet, C. (25 February 2016), Two new combinations in Euploca Nutt. (Heliotropiaceae, Boraginales) and a conspectus of the species of the Guiana Shield area. Phytokeys 61: 102 [taxonomic synonym]

taxonomic synonym of: Euploca Nutt. legitimate

Council of Heads of Australasian Herbaria (2019), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Heliotropium L. legitimate

Council of Heads of Australasian Herbaria (29 September 2022), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Euploca Nutt. legitimate

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