Abstract
The diatom genus Hantzschia and its closely associated genera are discussed briefly. From a study of one variety of Hantzschia virgata by light and scanning electron microscopy the morphology of the siliceous components has been determined. The new combination H. virgata v. intermedia has been proposed. The possible origin of Hantzschia from Nitzschia by a displacement of the raphe system at cell division is discussed.

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