Groups (orders) follow Rippka et al. (1979) – below
I. Chroococcales: a Chroococcus subnudus, b Ch. limneticus, c Cyanothece aeruginosa, d Snowella litoralis, e Microcystis aeruginosa.
II. Pleurocapsales: f Pleurocapsa minor.
III. Oscillatoriales: g Planktothrix agardhii, h Limnothrix redekei, i Arthrospira jenneri, j Johanseninema constricum, k Phormidium sp., l, m Oscillatoria sp., n Schizothrix sp., o Tolypothrix sp., p Katagnymene accurata.
IV. Nostocales: q Dolichospermum planctonicum, r Dolichospermum sp., s Nostoc sp., t Nodularia moravica.
V . Stigonematales: u, v Stigonema sp.
Scale bar: a–u = 10 µm, v = 20 µm.
Rippka R, Deruelles J, Waterbury JB, Herdman M, Stanier RY (1979) Generic assignments, strain histories and properties of pure cultures of cyanobacteria. J Gen Microbiol 111:1–61.
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