CHRISTENHUSZ, M. J. M.; ZHANG, X. C.; SCHNEIDER, H. A linear sequence of extant families and genera of lycophytes and ferns. Phytotaxa, [S. l.], v. 19, n. 1, p. 7–54, 2011. DOI: 10.11646/phytotaxa.19.1.2. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.19.1.2. Acesso em: 31 jan. 2025.