Very young specimen of an epiphyte on Oedogonium. The setae (filaentous hairs) are not yet grown. Pyrenoids are visible and bacteria living as epibionts.
Aufwuchs on Oedogonium
which itself was Aufwuchs on roots dangling in a creek´s water. This image was taken using Zeiss Universal with Olympus C7070 CCD camera.