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Genetic and morphological differentiation within the broadly defined Campanula versicolor (Campanulaceae)

Campanula versicolor, commonly known as various-colored bell-flower, is a constituent of the C. pyramidalis complex, distributed in the southern Balkan Peninsula with a small disjunct range in the southeastern Italy. Morphologically, it is highly variable species, which lead to the description of sixteen taxa which can be related to it. However, in modern floristic literature and checklists those taxa are neglected and considered as synonyms of broadly defi ned C. versicolor. Our extensive population sampling covered the entire range of the taxonomically intricate C. versicolor s.l. additionally, populations of recently described taxa from Albania – Campanula korabensis, C. korabensis subsp. bicajensis and C. longipetiolata are included in this study as well, based on the description from protologues, type materials and personal observations. Reconstruction of relationships among the populations based on microsatellite DNA data revealed three genetic groups of populations, which are morphologically and geographically well differentiated. Based on the obtained results a new taxonomic treatment of C. versicolor s.l. was proposed, along with the key for the identification, description, distribution and habitat data.

Campanula pyramidalis complex, C. versicolor, microsatellites, morphometrics, taxonomy

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