Rapini

Rapini or broccoli rabe (/rɑːb/) is a green cruciferous vegetable, with the leaves, buds, and stems all being edible; the buds somewhat resemble broccoli, but do not form a large head. Rapini is known for its slightly bitter taste, and is particularly associated with Mediterranean cuisine.
Native to Europe, the plant is a member of the tribe Brassiceae of the Brassicaceae (mustard family).[1] Rapini is classified scientifically as Brassica rapa var. Ruvo.[1] It is also known as broccoletti, broccoli raab, broccoli rabe, spring raab, and ruvo kale.[1] Turnip and bok choy are a different variety (or subspecies) of this species.
The young leaves of these plants as used in cooking are either the same as or the South European equivalent of turnip tops or turnip greens.