I share with you two articles that advance Ethnobotany Theory.
Albuquerque, U.P., de Medeiros, P.M., Ferreira Júnior, W.S., da Silva, T.C., da Silva, R.R.V., Gonçalves-Souza, T., 2019. Social-Ecological Theory of Maximization: Basic Concepts and Two Initial Models. Biological Theory.
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Gaoue, O.G., Coe, M.A., Bond, M., Hart, G., Seyler, B.C., McMillen, H., 2017. Theories and Major Hypotheses in Ethnobotany. Economic Botany 71, 269-287.