SILVA JUNIOR, W. R. da; PRADO, J.; FERREIRA, A. W. C.; FERNANDES, R. S.; OLIVEIRA, H. C. de. Lycophytes and ferns of an Amazonian-Cerrado ecotone in Maranhão State, Northeastern Brazil: identification key and annotated list of taxa. Biota Neotropica, Sao Paulo, Brazil, v. 24, n. 2, 2024. Disponível em: //www.biotaneotropica.org.br/BN/article/view/2040. Acesso em: 25 apr. 2025.