Stigonema mesentericum Geitler

Gupta, Pratibha, 2021, First report of diversity of Cyanobacteria of Broknes Peninsula of Larsemann Hills, East Antarctica, Cryptogamie, Algologie 20 (15), pp. 241-251 : 249

Stigonema mesentericum Geitler

Die Süsswasser-Flora Deutschlands, Österreichs und der Schweiz 184, f. 223 ( Geitler 1925). Desikachary, Cyanophyta 607, t. 134, f. 5-7 ( Desikachary 1959).

DESCRIPTION. — Filament prostrate, dense with sometimes very short protuberant branches, coralloid like; sheath firm, transparent or yellow brown; trichome mostly with 2 - 4 or sometimes with many rows of cells, in older part of the filament cells with a special envelop; heterocysts intercalary ( Fig. 8P ).

DIMENSION. — Cells 3.6-11.3 µm broad; heterocysts 5.0-6.0 µm broad.

ENVIRONMENT & HABITAT. — Terrestrial species; moist rocks; temperature 4°C.

Figures

FIG. 8. — Cyanoprokaryotes of Broknes Peninsula. A, Chroococcus minutus (Kütz.) Nägeli; B, Gloeocapsa biformis Ercegovic; C, Cyanosarcina burmensis Skuja, D, Oscillatoria anguina (Bory) Gomont; E, Oscillatoria curviceps C.Agardh ex Gomont; F, Oscillatoria limosa C.Agardh ex Gomont; G, Planktothrix rubescens (DC. ex Gomont) Anagn. & Komárek; H, Lyngbya confervoides C.Agardh ex Gomont; I, Phormidium ambiguum Gomont; J, Phormidium bekesiense (I.Kiss) K.Kiss,; K, Oscillatoria jenensis G.Schmid; L, Phormidium subfuscum Kütz. ex Gomont; M, Oscillatoria tenuis C.Agardh ex Gomont; N, Aulosira fritschii Bharadwaja; O, Coleospermum goeppertianum (goppertianum) Kirch. ex Frank; P, Stigonema mesentericum Geitler. Scale bars: A, N, O, 30 µm; B, C, F, I, L, 10 µm; D, E, G, H, J, K, M, P, 20 µm.