Phormidium ambiguum Gomont 1892

Phormidium ambiguum Gomont Annales des Sciences Naturelles, Botanique, Série 7 (16): 178 (Gomont 1892). Desikachary, Cyanophyta 266, t. 44, f. 16 (Desikachary 1959). Komárek & Anagn., Cyanoprokaryota Part 2: Oscillatoriales 19 (2): 479 (Komárek & Anagnostidis 2005). DESCRIPTION. — Filament elongate; sheath thin, firm, mucilaginous, colourless, sometime thicker diffluent, sometimes more or less lamellated; trichome slightly constricted or sometimes not constricted at the cross-walls; end not attenuated, not capitate, blue-green; cells not granulated at the cross-walls or sometimes granulated; end cell rounded, calyptra absent (Fig. 8I). DIMENSION. — Trichome 3.5-7. 8 µm broad and cells 1.2-3.4 µm long. ENVIRONMENT & HABITAT. — Freshwater and marine species; wet rocks, free-floating & benthic in stagnant water; temperature 3.5°C.
Published as part of Gupta, Pratibha, 2021, First report of diversity of Cyanobacteria of Broknes Peninsula of Larsemann Hills, East Antarctica, pp. 241-251 in Cryptogamie, Algologie 20 (15) on page 247, DOI: 10.5252/cryptogamie-algologie2021v42a15, http://zenodo.org/record/7819309
{"references":["GOMONT M. 1892. - Monographie des Oscillariees (Nostocacees Homocystees). Deuxieme partie. - Lyngbyees. Annales des Sciences Naturelles, Botanique, Serie 7 16: 91 - 264, pls 1 - 7.","DESIKACHARY T. V. 1959. - Cyanophyta. Indian Council of Agricultural Research, New Delhi, 686 p.","KOMAREK J. & ANAGNOSTIDIS K. 2005. - Cyanoprokaryota 2 nd Part: Oscillatoriales, in BUDEL B., KRIENITZ L., GARTNER G. & SCHAGERL M. (eds.), Susswasserflora von Mitteleuropa, Elsevier / Spektrum, Heidelberg 19 (2): 759 p."]}