Cosmarium seelyanum Wolle 1883

    Cells small, length width almost equal measures 18–21 µm in length and 16–19 µm in width. Cells deeply constricted, sinus closed and round sinus ends. Semicell oblong and apex with 4 undulations; lateral margins with 2–3 undulations. Semicells covered with granules, semicircular in lateral view and elliptic in vertical view.