Candolle, A.P. de in Candolle, A.L.P.P. de (ed.) (1845), Borragineae. Prodromus Systematis Naturalis Regni Vegetabilis 9: 515 [comb. et stat. nov.]

basionym: Pittonia Mill. legitimate

Mueller, F.J.H. von (1858), Fragmenta Phytographiae Australiae 1(3): 59 [secondary reference]

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: Heliotropium L. legitimate

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