chroococcus chroococcus chroococcus is a genus of cyanobacteria belonging to the family chroococcaceae. chroococcus chroococcus cohaerens scientific classification domain: bacteria phylum: cyanobacteria class: cyanophyceae order: chroococcales family: chroococcaceae genus: chroococcusnägeli, 1849 as a result of recent genetic analyses, several new genera were erected from this genus: e.g., limnococcus. the genus has a cosmopolitan distribution. species: chroococcus batavus joosten, 2006 chroococcus cimneticus ong chroococcus cohaerens (bréb.) nägeli chroococcus yellowstonensis chroococcus minor chroococcus hansgirgi