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Three kinds of taxonomic spectra of vascular plants were compiled for 28 floristic areas covering the whole of Siberia: (a) genera/species spectra, (b) families/genera spectra, and (c) families/species spectra. The analysis is based on records for 136 families, 826 genera, 4302 species and subspecies. The patterns of spatial floristic diversity are shown in dendrograms. Spectra of relative assessment...