Angelonia gardneri Hook.

POWO follows these authorities in synonymising this name:

• Arbo, M.M. & al. (2018). Flora Argentina. Flora vascular de la República Argentina 20(1): 1-488. INTA, IMBIV & IBODA. [Cited as Angelonia salicariifolia.]
• Rajbhandari, K.R., Rai, S.K. & Chhetri, R. (2022). A Handbook of the Flowering Plants of Nepal 4: 1-522. Department of Plant Resources, Thapathali, Kathmandu, Nepal. [Cited as Angelonia salicariifolia.]

This name was accepted following an alternative taxonomy by these authorities:

• Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies. Smithsonian Contributions to Botany 98: 1-1192. [Cited as Angelonia gardneri.]
• Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 529. MIM, Deurne. [Cited as Angelonia gardneri.]
• Jørgensen, P.M., Nee, M.H. & Beck., S.G. (eds.) (2013). Catálogo de las plantas vasculares de Bolivia. Monographs in Systematic Botany from the Missouri Botanical Garden 127: 1-1741. Missouri Botanical Garden. [Cited as Angelonia gardneri.]
• Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003). A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar. Contributions from the United States National Herbarium 45: 1-590. Smithsonian Institution. [Cited as Angelonia gardneri.]
• Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur. Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348. Missouri Botanical Garden. [Cited as Angelonia gardneri.]