The genus Adenostyles Cass. (Asteraceae) in Southern Italy and Sicily

This paper provides an update concerning the genus Adenostyles Cass. in southern Italy and Sicily, based on field, herbarium and literature data. In total, three taxa (A. australis, A. alpina subsp. macrocephala and A. alpina subsp. nebrodensis) occur in the study area. For each taxon detailed morphological description as well as information about taxonomy, distribution, ecology, phenology and conservation status are here reported. An identification key is provided, too. The recent presumptive extinction in the wild of A. alpina subsp. nebrodensis is here recorded.