Abstract
Methods for the paperchromatographic identification and for the spectrophotometric estimation of Ranunculin in fresh plants are described. Through application of these methods 60 species of Ranunculaceae were investigated for the presence of ranunculin. The taxonomic significance of the results are discussed. The distribution of ranunculin in the family seems to fit exceptionally well with Gregory's proposition for the arrangement of the genera within the family.

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