Lindley, J. (1826), The Botanical Register: Consisting of Coloured Figures of Exotic Plants, Cultivated in British Gardens; with their History and Mode of Treatment 12: t. 964 [comb. et stat. nov.]

• Type: Lobelia hypocrateriformis R.Br.

basionym: Lobelia sect. Isotoma R.Br. legitimate

Bentham, G. (16 December 1868), Flora Australiensis 4: 134 [secondary reference]

nomenclatural synonym: Lobelia sect. Isotoma R.Br. legitimate pro parte taxonomic synonym: Laurentia Michx. ex Adans. nom. illeg., nom. superfl. pro parte taxonomic synonym: Enchysia C.Presl legitimate

Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 85 [secondary reference]

pro parte taxonomic synonym: Lobelia L. legitimate pro parte taxonomic synonym: Laurentia Michx. ex Adans. nom. illeg., nom. superfl. pro parte taxonomic synonym: Enchysia C.Presl legitimate

Dixon, W.A. (1906), The Plants of New South Wales: 204 [secondary reference]

Bailey, F.M. (1913), Comprehensive Catalogue of Queensland Plants: 291 [secondary reference]

Sulman, F. (1914), A Popular Guide to the Wild Flowers of New South Wales II: 128 [secondary reference]

Black, J.M. (1929), Bignoniaceae - Compositae. Flora of South Australia 4: 549 [secondary reference]

• Etymology: "From Greek isos, equal; tome, a cutting: alluding to the corolla-lobes nearly equal in length."

Melville, R. (1960), Contributions to the Flora of Australia: VI. The pollination mechanism of Isotoma axillaris Lindl. and the generic status of Isotoma Lindl. Kew Bulletin 14(2): 277-279 [secondary reference]

• Type: Isotoma axillaris Lindley

Curtis, W.M. (1963), Angiospermae: Lythraceae to Epacridaceae. The Student's Flora of Tasmania 2: 411 [secondary reference]

Eichler, Hj. (1965), Supplement to J.M.Black's Flora of South Australia (Second Edition, 1943-1957): 293 [secondary reference]

Burbidge, N.T. & Gray, M. (1970), Flora of the Australian Capital Territory: 343-344 [secondary reference]

Carolin, R.C. in Jessop, J.P. (ed.) (1981), Plantaginaceae, Campanulaceae. Flora of Central Australia: 350 [secondary reference]

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

Ross, E.M. in Stanley, T.D. & Ross, E.M. (1986), Campanulaceae. Flora of South-eastern Queensland 2: 477 [secondary reference]

Wheeler, J.R. in Marchant, N.G., Wheeler, J.R., Rye, B.L., Bennett, E.M., Lander, N.S. & Macfarlane, T.D. (1987), Lobeliaceae. Flora of the Perth Region 2: 601 [secondary reference]

Brummitt, R.K. (1992), Vascular Plant Families and Genera: 221 [taxonomic synonym]

taxonomic synonym of: Laurentia Michx. ex Adans. nom. illeg., nom. superfl.

Wheeler, J.R. in Wheeler, J.R. (ed.) (1992), Lobeliaceae. Flora of the Kimberley Region: 872 [secondary reference]

Wiecek, B. in Harden, G.J. (ed.) (1992), Lobeliaceae. Flora of New South Wales 3: 128-129 [secondary reference]

Albrecht, D.E. & Walsh, N.G. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Campanulaceae. Flora of Victoria 4: 566 [secondary reference]

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

nomenclatural synonym: Lobelia sect. Isotoma R.Br. legitimate nomenclatural synonym: Laurentia sect. Isotoma (R.Br.) E.Wimm. legitimate

Wheeler, J.R., Marchant, N.G. & Lewington, M. (2002), Dicotyledons. Flora of the South West 2: 655 [secondary reference]

Lammers, T.G. in Kubitzki, K. (ed.) (2007), Campanulaceae. The Families and Genera of Vascular Plants 8: 49 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 437 [secondary reference]

taxonomic synonym: Hypsela C.Presl legitimate

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

orthographic variant: Isotomia F.Muell. orth. var. nomenclatural synonym: Lobelia sect. Isotoma R.Br. legitimate nomenclatural synonym: Laurentia sect. Isotoma (R.Br.) E.Wimm. legitimate pro parte taxonomic synonym: Hypsela C.Presl legitimate pro parte taxonomic synonym: Enchysia C.Presl legitimate

• APC Dist.: WA, NT, SA, Qld, NSW, ACT, Vic, Tas

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