DistributionRead full entry
Range DescriptionThe native range of B. rupestris is unclear. According to Tutin et al. (1964), it is native to Sicily and southern Italy. However, Snogerup et al. (1990) record it as endemic to west Sicily (mainly in coastal localities), noting that occurrences reported in the 1930s from Campania near Napoli and from Sorrentino have not been found and no voucher material seen, and that these reports were probably based on escaped garden material of B. oleracea. USDA, ARS, National Genetic Resources Program (2010) also record it as endemic to Sicily. However, the assessors believe it to be native to Sicily and Calabria.