Cosmarium bengalense W.B Turner 1892

Division     Charophyta
Class     Zygnematophyceae
Order     Desmidiales
Family    Desmidiaceae

    Cells medium size; nearly twice the length than width of the cells. Apices truncated or broadly rounded and cell wall smooth. Cells measure 67–79 μm length and 34–49 μm width. Cells with median constriction moderate and sinus linear and slightly open towards the outside, isthmus 16–18 µm. Semicells hexagonal and highly sinuate (undulated margins), tapering towards apex, semicells ovate- lanceolate in lateral view.


Thalli collected as plankton from Pond at Atchankulam-Kottar, Agastheeswaram Taluk; ThalakanvillaiKasiparai Pond, Karungal-Sonanga Parai Pond, Vilavancode Taluk.