Robinson, B.L. (1908), Rhodora 10(112): 66 [comb. nov.]

basionym: Obolaria caroliniana Walter legitimate

Barker, W.R. in Harden, G.J. (ed.) (1992), Scrophulariaceae. Flora of New South Wales 3: 556-557 [secondary reference]

taxonomic synonym: Bacopa amplexicaulis Wettst. legitimate

Fechner, N. in Bostock, P.D. & Holland, A.E. (ed.) (2007), Scrophulariaceae. Census of the Queensland Flora 2007: 185 [secondary reference]

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

nomenclatural synonym: Obolaria caroliniana Walter legitimate taxonomic synonym: Bacopa amplexicaulis Wettst. legitimate

• APC Dist.: Qld (naturalised), NSW (naturalised)

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