URTECHO, R. J. Four new species of Tragia (Euphorbiaceae) from the Tehuantepec region of Mexico. Journal of the Botanical Research Institute of Texas, [S. l.], v. 20, n. 1, p. 45–62, 2026. DOI: 10.17348/jbrit.v20.i1.1462. Disponível em: https://journals.brit.org/jbrit/article/view/1462. Acesso em: 25 may. 2026.