johannesbaptistia johannesbaptistia johannesbaptistia is a genus of brackish–freshwater cyanobacteria which has a very characteristic morphology. it is the only member of the family cyanothrichaceae. when the name was changed from cyanothrix to johannesbaptistia (due to the rules of priority in the international code of nomenclature for algae, fungi, and plants), the family name was not changed. johannesbaptistia scientific classification domain: bacteria phylum: cyanobacteria class: cyanophyceae order: chroococcales family: cyanothrichaceaeelenkin in kiselev genus: johannesbaptistiadetoni 1934 type species johannesbaptistia pellucida synonyms cyanothrix the genus name of johannesbaptistia is in honour of giovanni battista de toni (1864–1924), who was an italian botanist, mycologist and phycologist.