Lectotypification and taxonomy of the Italian endemic Biscutella incana (Brassicaceae)

Biscutella incana is endemic to the southern Apennine Peninsula (Italy) and was first described by Michele Tenore in 1826 from Calabria. It belongs to B. ser. Levigatae, the most morphologically diversified and critical series within the genus. In order to fix the application of this name, a lectotype housed in NAP was designated here. An updated and detailed morphological description, distribution and information about habitat and phenology are provided. Furthermore, a chromosome count made on a new population discovered in Dolomiti Lucane (Basilicata, southern Italy), confirmed that B. incana is diploid (2n = 18).