This paper, listing all of Otto Müller’s 200 diatom names, the full protologue citations as well as
the sample number of the original material at B, is a background study for the taxonomy and
biogeography of the past and present East African diatom flora. Short accounts of Müller’s life,
work, taxonomy and the possible whereabouts of other original material are given; and an
extensive bibliography of his papers is included.