This variety is believed to be the most commonly grown lemon in Yuma producing very high-quality lemons with a thin skin, good juice and high acidity. Once a year it produces a heavy crop of fruit in mid-winter to early spring. Lisbon lemons are medium-sized, oblong citrus fruits with a rounded stem end and very pronounced mammilla, or nipple, on the opposite end. The medium-thick rind is smooth and bright yellow when mature. It is finely pitted with oil glands that when scratched or rubbed offer a citrusy aroma. The pale-yellow flesh has few to no seeds and is very juicy and acidic. Lisbon lemons grow on both dwarf and tall-statured trees, hidden under dense, evergreen foliage.