Vriese, W.H. de in Lehmann, J.G.C. (ed.) (1845), Lobeliaceae. Plantae Preissianae 1(3): 398 [tax. nov.]

• Type: "In arenosis sylvae prope Bulescreek, Perth, m. Nov. 1841. Herb. Preiss. No. 1432."

Bentham, G. (16 December 1868), Flora Australiensis 4: 136 [secondary reference]

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

taxonomic synonym of: Isotoma scapigera (R.Br.) G.Don legitimate

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