Oscillatoria anguina Bory ex Gomont

Annales des Sciences Naturelles, Botanique, Série 7, 16: 234, t.4, f. 16. (Gomont 1892). Desikachary, Cyanophyta 210, t. 41, f. 5-6 (Desikachary 1959). Komárek & Anagn., Cyanoprokaryota Part 2: Oscillatoriales 19 (2): 592, f. 885 (Komárek & Anagnostidis 2005).

DESCRIPTION. — Trichome almost straight, sometimes slightly bent, tapering at the end, not constricted or very slightly constricted, cross-walls granulated; screw like more or less twisted and gradually attenuated at the end; cells sometimes distinctly granulated,; end-cells capitate to sickle shape or obtusely button like flattened or rounded with slightly thickened outer wall, rarely with calyptra (Fig. 8D).

DIMENSION. — Trichome 4.6-6.5 µm broad and cells 1.6-3.4 µm long.

ENVIRONMENT & HABITAT. — Freshwater species; water logged area; temperature 5°C.