Arugula is actually part of the Brassica, or Cruciferous, family, which means technically it’s a vegetable and not a lettuce. Other foods in this family include broccoli, cauliflower, Brussels sprouts, kale, mustard greens, cabbage and watercress. Arugula is known as rocket in England, Australia and New Zealand, and as rucola in Italy. There is a difference between wild arugula and baby (or regular) arugula. Leaves on the former are pointy vs the latter, whose leave edges are more smooth. Wild arugula has a sharper, more peppery flavor. Baby arugula is found in grocery stores much more often than wild.