Silva Junior, W. R. da, A. W. C. Ferreira, A. L. Ilkiu-Borges, and R. S. Fernandes. “Ferns and Lycophytes of Remnants in Amazônia Maranhense, Brazil”. Biota Neotropica, vol. 20, no. 3, Jan. 2020, //www.biotaneotropica.org.br/BN/article/view/1738.