Oculatellaceae

Oculatellaceae Mai et Johansen
A monophyletic assemblage of genera based on 16S rRNA gene sequence phylogeny, with filaments without sheaths in actively growing populations, but facultatively developing sheaths in established populations, without
false branching in some genera, but typically falsely branched in most genera. Sheaths thin, firm, lacking pigmentation. Trichomes slightly to distinctly constricted at the crosswalls, straight, flexuous, spirally twisted, or knotted into loose
nodules, less than 3 μm wide. Cells shorter than wide, isodiametric, or longer than wide, with peripheral thylakoids, obligately without aerotopes, facultatively forming granules in the centroplasm. End cells mostly cylindrical, rounded,
but rounded conical in some genera.
Mai T., Johansen J.R., Pietrasiak N., Bohunicka M., Martin M.P. Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species // Phytotaxa, 2018. V. 365. N. 1. P. 1-59. https://doi.org/10.11646/phytotaxa.365.1.1