McComb, J.A. (7 December 1970), A revision of the species Isotoma fluviatilis. Contributions from the New South Wales National Herbarium 4(3): 107 [autonym]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 140 [secondary reference]

taxonomic synonym: Lobelia inundata R.Br. legitimate taxonomic synonym: Isotoma fluviatilis var. inundata (R.Br.) Benth. legitimate

Wiecek, B. in Harden, G.J. (ed.) (1992), Lobeliaceae. Flora of New South Wales 3: 130 [secondary reference]

Council of Heads of Australasian Herbaria (2010), Australian Plant Census: - APC [secondary reference]

nomenclatural synonym: Isotoma fluviatilis (R.Br.) F.Muell. ex Benth. var. fluviatilis legitimate taxonomic synonym: Hypsela sessiliflora E.Wimm. legitimate taxonomic synonym: Isotoma sessiliflora (E.Wimm.) Lammers legitimate

• APC Dist.: NSW

Albrecht, D.E., Walsh, N.G., Jobson, R.W. & Knox, E.B. (23 November 2015), The taxonomic status of Hypsela sessiliflora E.Wimm. (Campanulaceae: Lobelioideae). Telopea 18: 461 [secondary reference]

taxonomic synonym: Hypsela sessiliflora E.Wimm. legitimate

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