Napa cabbage and bok choy are Brassica rapa var. pekinensis. Broccoli rabe (or raab) is another variant of B. rapa. Turnips are also members of B. rapa. Bear > Napa cabbage > and bok choi may also be B. oleracea. Broccoli rabe is NOT B. > oleracea, but > a different species of genus Brassica. > > Avraham >