Ramamoorthy, T. P., Hiriart-Valencia, P. and González-Medrano, F. (1982) “Noeplingia Ramamoorthy, Hiriart & Medrano (Labiatae), a new genus from Hidalgo, Mexico”, Botanical Sciences, 0(43), pp. 61 - 65. doi: 10.17129/botsci.1269.