Diatoms from the Colombian and Peruvian Amazon : the genera Encyonema, Encyonopsis and Gomphonema (Cymbellales: Bacillariophyceae) /

by Vouilloud, Amelia A., Vouilloud, Amelia A.

Nupela species (Naviculares: Bacillariophyceae) from Colombian lowland waters including N. acaciensis nov. sp. and N. catatumbensis nov. sp. /

by Sala, Silvia E., Sala, Silvia E., Vouilloud, Amelia A., Plata Díaz, Yasmin, Pedraza, Edna, Pimienta, Astrid