capsosiraceae capsosiraceae the capsosiraceae are a family of cyanobacteria. capsosiraceae scientific classification domain: bacteria phylum: cyanobacteria class: cyanophyceae order: nostocales family: capsosiraceae(geitler) elenkin genera capsosira kützing ex bornet & flahault 1887 desmosiphon borzì 1907 nematoplaca geitler 1933 stauromatonema frémy 1930