Young colonies, cell divisions are almost over, the flagellae aren\'t yet fully formed. Scale bar indicates 25 µm.

Sample from the Lake Constance (vicinity of Bodman). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.

Image under Creative Commons License V 3.0 (CC BY-NC-SA).