The Lisbon lemon is a variety originating from Portugal and widely cultivated in California and other Mediterranean regions. The tree is vigorous, large, and highly productive. The fruits are medium to large in size, oblong in shape, with a thin to medium-thick peel and juice rich in acidity. Seeds are few, and the fruits are generally almost seedless. Production is spread over a long period, allowing for nearly year-round harvesting, with a peak in winter and spring.