The colonies typically display a straight and often extended structure. In girdle view, the cells appear as rectangular with a slight concavity in the central area, and the overall structure has a raised appearance. The foramina, through which substances pass, are narrow and elliptical in shape. The setae, which are slender and have a short basal segment, are notably present. Terminal setae, in particular, are thicker than the intercalary ones, and they curve smoothly in alignment with the colony axis. The intercalary setae, on the other hand, fan out at an angle ranging from 10 to 30 degrees relative to the colony axis. At the colony’s margin, these setae overlap. Additionally, there is one large chloroplast within these cells.