Synechococcales

Prochlorococcus is a genus of very small (0.6 μm) marine cyanobacteria with an unusual pigmentation (chlorophyll a2 and b2). These bacteria belong to the photosynthetic picoplankton and are probably the most abundant photosynthetic organism on Earth. Prochlorococcus microbes are among the major primary producers in the ocean, responsible for a large percentage of the photosynthetic production of oxygen. Prochlorococcus strains, called ecotypes, have physiological differences enabling them to exploit different ecological niches. Analysis of the genome sequences of Prochlorococcus strains s

thumb|224px| Transmission electron micrograph showing a species of the cyanobacteria Synechococcus. The carboxysomes appear as polyhedral dark structures.

Merismopedia (from the Greek merismos [division] and the Greek pedion [plain]) is a genus of cyanobacteria found in fresh and salt water. It is ovoid or spherical in shape and arranged in rows and flats, forming rectangular colonies held together by a mucilaginous matrix. Species in this genus divide in only two directions, creating a characteristic grid-like pattern.

species of Cyanobacteria

Synechocystis is a genus of unicellular, freshwater cyanobacteria in the family Merismopediaceae. It includes a strain, Synechocystis sp. PCC 6803, which is a well studied model organism.

Prochloron (from the Greek pro (before) and the Greek chloros (green) ) is a genus of unicellular oxygenic photosynthetic prokaryotes commonly found as an extracellular symbiont on coral reefs, particularly in didemnid ascidians (sea squirts). Part of the phylum cyanobacteria, it was theorized (endosymbiotic theory) that Prochloron is a predecessor of chloroplasts, components found in photosynthetic eukaryotic cells. However, this theory is largely refuted by phylogenetic studies which indicate Prochloron is not on the same line of descent that lead to the chloroplasts of algae and land plants

The Synechococcales are a proposed order of cyanobacteria, with over 70 genera. It includes both filamentous and single-celled types.

species of Cyanobacteria

The Synechococcaceae are a family of cyanobacteria.

The Pseudanabaenaceae are a family of cyanobacteria. The order Pseudanabaenales consists of this family and Thalassoporaceae (Thalassoporum).

The Merismopediaceae are a family of cyanobacteria.

Woronichinia is a genus of cyanobacteria, belonging to the family Coelosphaeriaceae.

Leptolyngbya is a genus of cyanobacteria in the family Leptolyngbyaceae. The genus has a cosmopolitan distribution.