- Rotational symmetry of cell face outline is 360 degrees; one end is a reflection of the other
In this section
Shaped like orange segments in valve view. The raphe is curved from the central area to the poles approximately in parallel with the long edge of the valve, but deflects towards the long edge at the cell poles (unlike in Encyonema, where it deflects the other way). Sometimes attached to surfaces with gelatinous stalks. Chloroplasts are golden-brown.