These are just immediately recognizable from their squat and round shape. Genoa lemons come from, duh, Genoa, (via Garden Guides). Oh, to come from Genoa, Italy, what a dreamy idea. Because these lemons are wider than the average or "true" lemon, you'll find an above-average number of sections, or carpels, inside. On average, Genoa lemons have 12 carpels. But don't get your hopes up for overly juicy lemons. Despite their size, these sections don't provide much juice.