You have requested access to download the full text of the source (SourceID: 284108):
Tremarin, P. I.; Freire, E. G.; Ludwig, T. A. V. (2013). Ultrastructure and distribution of Urosolenia obesa sp. nov. (Rhizosoleniaceae, Diatomeae) in reservoirs from southern Brazil. Phytotaxa. 125(1): 1-9.