fortieaceae fortieaceae the fortieaceae is a family of cyanobacteria. fortieaceae scientific classification domain: bacteria phylum: cyanobacteria class: cyanophyceae order: nostocales family: fortieaceae genera aulosira kirchner ex bornet & flahault 1886 calochaete hauer et al. 2013 coleospermum kirchner in cohn 1878 fortiea de-toni 1936 roholtiella bohunická et al. 2015