RAJU, V.; RAGAN, A.; SUTHARI, S.; RAMANA, M. On the identity and occurrence of Ophioglossum costatum (Pteridophyta: Ophioglossaceae) in Andhra Pradesh, India. Journal of Threatened Taxa, [S. l.], v. 3, n. 1, p. 1462–1464, 2011. DOI: 10.11609/JoTT.o2568.1462-4. Disponível em: https://threatenedtaxa.org/JoTT/article/view/1197. Acesso em: 6 jul. 2022.