Wimmer, F.E. in Engler, H.G.A. (1943), Campanulaceae - Lobeliaceae. Das Pflanzenreich 106: 121, 122, fig. 31b. [tax. nov.]

• Type: "Ost-Australien: N.S. Wales, Port Jackson (Ferd. Bauer! – Hb. Wien)."

Beadle, N.C.W., Evans, O.D. & Carolin, R.C. (1962), Handbook of the Vascular Plants of the Sydney District and Blue Mountains: 363 [secondary reference]

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

Wiecek, B. in Harden, G.J. (ed.) (1992), Lobeliaceae. Flora of New South Wales 3: 131 [secondary reference]

Threatened Species and Communities Section, Biodiversity Group, Environment Australia (8 July 1998), Endangered Species Protection Act 1992. Schedules 1, 2 & 3: 29 [secondary reference]

Lammers, T.G. (1999), Nomenclatural consequences of the synonymization of Hypsela reniformis (Campanulaceae: Lobelioideae). Novon 9: 75 [basionym]

basionym of: Isotoma sessiliflora (E.Wimm.) Lammers legitimate

Council of Heads of Australasian Herbaria (2005), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Isotoma fluviatilis (R.Br.) F.Muell. ex Benth. legitimate

Council of Heads of Australasian Herbaria (2010), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Isotoma fluviatilis (R.Br.) F.Muell. ex Benth. subsp. fluviatilis legitimate

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 [taxonomic synonym]

taxonomic synonym of: Isotoma fluviatilis (R.Br.) F.Muell. ex Benth. subsp. fluviatilis legitimate

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