Colony planktonic, sphaerical or irregularly ellipsoid or oval mucilaginous mass, with cells forming an irregular layer some distance from the outside of the mucilage.Cells sphaerical or slightly enlongated in radial axis (but not heart shaped); at the ends of narrow, distinct, branched stalks originating near centre of colony. Cell division perpendicular to surface of colony, with successive divisions in two different planes. Cells are often spaced some distance from each other, and, even if quite close, never in direct contact.