Actinotaenium mooreanum (W.Archer) Teiling 1954

    Cells oblong to broadly elliptical in shape; cells measure 78-90 µm in length and 50-60 µm in breadth. Cells very shallowly constricted at the center, sinus very small, isthmus 77-86 µm in breadth. Semicells semicircular with broad base, convex lateral margins and apices slightly truncate or rounded. Semicells puncated and circular in vertical view.