Also known as rapini, broccoletti, broccoli di rape, rape, rappi or friarielli (in Campania), a vegetable related to the turnip, used for its leaves, stems and buds that resemble broccoli. They are especially popular in Puglia (notably in orecchiette alle cime di rapa), Basilicata and Sicily.
Same (and more straight-forward!) in Portugal and western Spain, where they call them grelos.
Image by Diego