Coêlho, J.M.S., Lehmkuhl, E.A., Araújo, C.C.A.D., Ludwig, T.A.V. & Silva-Lehmkuhl, A.M.D. (2024) Actinella gessneri Hustedt (Eunotiaceae, Bacillariophyceae), a rare and endemic species in Amazonian blackwater, Brazil. Phytotaxa 636 (2): 163–174. https://doi.org/10.11646/phytotaxa.636.2.5