Kunth, K.S. in Humboldt, F.W.H.A. von, Bonpland, A.J.A. & Kunth, K.S. (1818), Nova Genera et Species Plantarum Edn. Quarto, 2(8): 389-390 [tax. nov.]

Pennell, F.W. (1919), Torreya 19(9): 167 [basionym]

basionym of: Veronica peregrina var. xalapensis (Kunth) Pennell legitimate

Pennell, F.W. (1935), Scrophulariaceae of eastern temperate North America: 342 [basionym]

basionym of: Veronica peregrina subsp. xalapensis (Kunth) Pennell legitimate

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Veronica peregrina subsp. xalapensis (Kunth) Pennell legitimate

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