The CAUP (Charles University in Prague) image web-database of algae is mostly based on the heritage of the German personalities who were working at the German part of Charles University from the second half of the 19th century to the 1945. Database includes at present 275 images of herbarium specimens, 1,710 images of permanent slides and 1,044 images of living algal strains from CAUP culture collection; in total 1,135 specimens.
Nevertheless, many objects in the University collection remained to be non-digitalised and the original species names of objects have been only partially revised.