Article

Dysploidy among perenni al herbaeeous Delphinieae is very uneommon on the basis of the existing data (275 species with known ehromosome number of e. 830 species of the whole tribe, i.e. 33,1 % of the speeies). A part from doubtful records eoming from anomalous or omamental plants, only a few, poorly studied eases of dysploidy are known: 3 Aconitum and 2 Delphinium species. The only well studied example, D. bolosii, should be regarded as a marginai, peripatric phenomenon, lacking great evolutionary future. However, among the annual speeies belonging to the genera Consolida and, specially, Aconitella, the variability by deereasing - and less frequently, inereasing - dysploidy, should be interpreted as an important phenomenon of karyotype rejuvenation taking piace in the main centre of specific diversity of such annual genera.