Actinotaenium turgidum (Brébisson ex Ralfs) Teiling 1954

Division     Charophyta
Class     Zygnematophyceae
Order     Desmidiales
Family    Desmidiaceae
Basionym     Cosmarium turgidum Brébisson ex Ralfs
SynonymDysphinctium turgidum Delponte; Calocylindrus turgidus Kirchner; Cosmarium turgidum var. ovatum Nordstedt; Cosmarium turgidum var. subrotundatum West

    Cells larger in size 2.25 times as long as broad; cells measure 78-90 µm in length and 44-51 µm in breadth. Cells oblong to subcylindrical, slightly constricted at the center, sinus rounded notch, isthmus 36-40 µm in breadth. Semicells ovate or truncate with broad base and slightly rounded lower angles, lateral margins slightly convex and converging upwards with truncate rounded apex. Semicells circular in vertical view and puncated wall.


Thalli collected as plankton and it prefers oligo-mesotrophic waters bodies.

Distribution in India

Jharkhand, Madhya Pradesh, Tamil Nadu.