Fernandes, R. S., W. R. da Silva Junior, A. W. C. Ferreira, F. P. Ottoni, S. S. Oliveira, M. R. Pietrobom, and I. A. Valdespino. “Selaginella P.Beauv. (Selaginellaceae) in the State of Maranhão, Northeastern, Brazil: A Floristic Survey and a New Record for the Cerrado Domain”. Biota Neotropica, vol. 23, no. 3, Jan. 2023, //www.biotaneotropica.org.br/BN/article/view/2009.