Silva Junior, Wagner Ribeiro da, Jefferson Prado, Alessandro Wagner Coelho Ferreira, Rozijane Santos Fernandes, and Hermeson Cassiano de Oliveira. 2024. “Lycophytes and Ferns of an Amazonian-Cerrado Ecotone in Maranhão State, Northeastern Brazil: Identification Key and Annotated List of Taxa”. Biota Neotropica 24 (2). Sao Paulo, Brazil. https://www.biotaneotropica.org.br/BN/article/view/2040.