Aloysia citrodora is a species of flowering plant in the verbena family Verbenaceae, native to western South America. Common names include lemon verbena. It was brought to Europe by the Spanish and the Portuguese in the 17th century and cultivated for its oil. Lemon verbena is a perennial shrub or subshrub growing to 2–3 m high. The 8-cm-long, glossy, pointed leaves are slightly rough to the touch and emit a powerful scent reminiscent of lemon when bruised (hence the Latin specific epithet citrodora—lemon-scented).

Lemon verbena leaves are used to add a lemon flavor to fish and poultry dishes, vegetable marinades, salad dressings, jams, puddings, Greek yogurt and beverages. It also is used to make herbal teas, or added to standard tea in place of actual lemon. It can also be used to make a sorbet. Lemon verbena oil is commonly used in perfumes and cosmetics for an additional citrusy scent.