prokaryotic organisms without organized chloroplasts but having chlorophyll a and oxygen-evolving photosynthesis; capable of fixing nitrogen in heterocysts; occurring in lichens both as primary photobionts and as internal or external cephalodia; still commonly called blue-green algae.
The Phylum Cyanobacteria is further organized into finer groupings including:
- Class (3): Chroobacteria · Cyanobacteria · Hormogoneae
- Species: ZipcodeZoo has pages for 3,376 species and subspecies in the Phylum Cyanobacteria.
At least 72 species and subspecies belong to the Class Hormogoneae.
More info about the Class Hormogoneae may be found here.
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