Phylum: Charophyta Family: Desmidiaceae
Pleurotaenium pseudofluctuatum (E.K. Kossinskaja) P.F.M. Coesel, & K.J. Meesters 2023
First described and illustrated by Kossinskaja (1960: 291, pl. 35: 5) as Pleurotaenium coronatum f. pseudofluctuatum. It was recently raised to species levels by Coesel & Meesters (2023: 80). It’s very similar to Pleurotaenium coronatum var. fluctuatum but differs in having truncate apices and small to vanishing terminal granules.
Cell dimensions: L: 450-580 µm; B: 48-60 µm; L/B: 9-10.
Distribution unknown due to possible confusion with similar species.
References:
Coesel, P.F.M. & Meesters, K.J. (2023 second edition). Desmids of the Lowlands.
Kossinskaja, E.K. (1960). Flora sporovykh rasteniy SSSR. Kon"yugaty, ili Stseplyanki (2). Desmidievyye Vodorosli. Vol. 5(1).