WETZEL, Carlos E., & Luc ECTOR 2014 (Jan. 21) Taxonomy, distribution and autecology of Planothidium bagualensis sp. nov. (Bacillariophyta) a common monoraphid species from southern Brazilian rivers Phytotaxa 156(4): 201-210, 32 figs., 2 tables previously identified as Planothidium lanceolatum |