VOUILLOUD, Amelia A., Silvia E. SALA, Marcela NÚÑEZ-AVELLANEDA, Yimmy MONTOYA-MORENO, & Santiago R. DUQUE 2013 (online Dec. 7) Brachysira (Naviculales, Bacillariophyceae) in lowland waters from Colombia Diatom Research 29(2): 147-163, 60 figs., 2 tables Brachysira guarrerai and B. huitotarum