This database is supplementary material of the article "Update of the Brazilian floristic list of Algae and Cyanobacteria" published in the Journal Rodriguésia in 2015 (DOI: 10.1590 / 2175-7860201566408).
### Attention! In this database the genus _Characium_ A.Braun is under _Charophyceae_. However, it should be considered as belonging to _Chlorophyceae_.
Biancamano, M.I. 1991. Catálago das diatomáceas (Bacillariophyceae) referidas para o estado do Rio Grande do Sul, Brasil, no período de 1973 a 1990. Caderno de Pesquisa. 3(1): 5-196. (Série Botânica).