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In this contribution new chromosome data obtained on material collected in Italy are presented. It includes 15 chromosome counts for Carduus, Crepis, Picris, Taraxacum (Asteraceae), Ceratonia, Lathyrus (Fabaceae), Colchicum (Colchicaceae), Fritillaria (Liliaceae), Petrorhagia (Caryophyllaceae), Potentilla (Rosaceae), Quercus (Fagaceae), Reseda (Resedaceae), and Thymus (Lamiaceae).

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Summary Under priority, Alkanna lutea Moris (1845) should be used instead of its later homonym, A. lutea A. DC. (1846), which is, for this reason, illegitimate. Also it is proved that A. lutea A. DC. is a heterotypic synonym of Moris' name. The type of A. lutea Moris is designated.