Annales des Sciences Naturelles, Botanique, Série 210, t.6/6, f. 13 (Gomont 1892). Desikachary, Cyanophyta 206, t. 42, f. 11 (Desikachary 1959). Komárek & Anagn., Cyanoprokaryota Part 2: Oscillatoriales 19 (2): 593, f. 886 (Komárek & Anagnostidis 2005).
DESCRIPTION. — Trichome dull blue-green to brownish, more or less straight, sometimes slightly curved, not constricted at the crosswalls or slightly constricted; cross-walls usually frequently granulated; end cell flatly rounded or obtuse-rounded with slightly thickened outer membrane (Fig. 8F).
DIMENSION. — Trichome 5.1-9.6 µm broad and cells 1.5-5.0 µm long.
ENVIRONMENT & HABITAT. — Freshwater species; stagnant/free/ slow-floating in the form of mats; temperature 1°C.