Campanula farinosa (Campanulaceae): taxonomic status and distribution in the Ural and Western Siberia

Taxonomy, nomenclature, morphology, and distribution of Campanula farinosa are updated. The species is for the first time reported for Ural and Western Siberia; C. krylovii is relegated to its synonymy. Morphological characters discriminating C. farinosa and C. glomerata are revised; stability of these features throughout the whole area of C. farinosa ranging from Central Europe to Western Siberia is underlined as an argument favoring the species (not subspecies) status of the latter.