This is a filamentous green alga, Klebsormidium spp. Klebsormidium lives in aquatic
habitats as well as in terrestrial habitats. This specimen is a terrestrial form, living on bark.
Incident fluorescent illumination, HBO 50 W, blue excitation.
Red primary fluorescence of the chlorophyll, Objective 40x, DSLR, 4 sec exposure time.
Thanks,
Gerd