Phylum: Charophyta   Family: Mesotaeniaceae

Netrium curvatum (F.E. Fritsch) P.F.M. Coesel & K.J. Meesters 2023

First described and illustrated by Fritsch (1918: 541, fig. 20 B) as Netrium oblongum f. curvatum. It has recently been made a full species by Coesel & Meesters (2023: 24, pl. 6: 4). Apart from the obvious curve, it attenuates towards the apices.
Cell dimensions: L: 48-125 µm; B: 15-28 µm; L/B: 3-5.
A rare taxon found in moorland pools, abandoned peat-cutting and Sphagnum bogs.

References: 
Coesel, P.F.M. & Meesters, K.J. (2023 second edition).. Desmids of the Lowlands.
Fritsch, F.E. (1918).. Contributions to our knowledge of the freshwater algae of Africa. (2) A first report on the freshwater algae mostly from the Cape Peninsula in the herbarium of the South African Museum.