Abstract
The organisms that comprise the family Oscillatoriaceae, formed by six genera, Blennothrix, Homoeothrix, Lyngbya, Oscillatoria, Plectonema and Polychlamydum, are quite frequent, occurring in a wide variety of habitats (aerophytic, marine and freshwater). The relative simple morphology and morphological plasticity associated with environmental factors make confusing the distinction of spec…