- class Cyanobacteria, Cyanophyceae, class Cyanophyceae - photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae
--1 is a kind of class
--1 is a member of Cyanophyta, division Cyanophyta
--1 has members:cyanobacteria, blue-green algae; Nostocaceae, family Nostocaceae; Oscillatoriaceae, family Oscillatoriaceae