Aloysia citrodora is a species of flowering plant in the verbena family Verbenaceae, native to western South America. Common names include lemon verbena and lemon beebrush. 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).
Sprays of tiny purple or white flowers appear in late spring or early summer. It is sensitive to cold, losing leaves at temperatures below 0 °C (32 °F), although the wood is hardy to −10 °C (14 °F). Due to its many culinary uses, it is widely listed and marketed as a plant for the herb garden.
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 (as is common with Moroccan tea). It can also be used to make a sorbet.
The first European botanist who publicly noticed this plant was the French Philibert Commerson, who collected in Buenos Aires on his botanical circumnavigation with Bougainville, about 1767. The plant had already been quietly imported directly into the Real Jardín Botánico de Madrid, where in 1797 professors Casimiro Gómez Ortega and Antonio Palau y Verdera named it, though they did not yet effectively publish it, Aloysia citrodora in Latin and "Hierba de la Princesa" in Spanish, to compliment Maria Louisa of Parma, Princess of Asturias the wife of the Garden's patron Infante Carlos de Borbon, Prince of Asturias and son of king Carlos III. The name was later effectively published in the first volume of Palau's Parte Práctica de Botánica in 1784.
Unofficial importations from Spanish America seldom fared well: when another French botanist Joseph Dombey landed his collections at Cadiz in 1785 they were impounded and left to rot in warehouses, while he was refused permission even to have seeds planted. Among the bare handful of plants Dombey had assembled during eight years at Lima, lemon verbena survived.
Meanwhile, Gómez Ortega sent seeds and specimens of the plant to Charles Louis L'Héritier de Brutelle in Paris; L'Héritier published it as Verbena triphylla in the second fascicle his Stirpes Novae. published in December 1785 or January 1786. From Paris John Sibthorpe, professor of Botany at Oxford, obtained the specimen that he introduced to British horticulture: by 1797 lemon verbena was common in greenhouses around London, and its popularity as essential in a fragrant bouquet increased through the following century.
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- "Aloysia citrodora". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2010-04-12.
- Armada, J. & A. Barra (1992). "On Aloysia Palau (Verbenaceae)". Taxon. 41 (1): 88–90. JSTOR 1222497.
- Margaret Joan Roberts (2000). Margaret Roberts' A–Z Herbs: Identifying Herbs, How to Grow Herbs, the Uses of Herbs. Struik. p. 51. ISBN 978-1-86872-499-4.
- Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
- http://www.hanasgarden.com/2011/05/lemon-verbena-aloysia-citrodora Archived April 25, 2012, at the Wayback Machine.
- Lemon verbena, Superbherbs.net, retrieved 2012-10-25
- Lawless, J., The Illustrated Encyclopedia of Essential Oils, ISBN 1-85230-661-0
- Correlation between plasma antioxidant capacity and verbascoside levels in rats after oral administration of lemon verbena extract. Funes L, Fernández-Arroyo S, Laporta O, Pons A, Roche E, Segura-Carretero A, Fernández-Gutiérrez A and Micol V, Food Chemistry, 2009, Volume 117, No. 4, pages. 589-598, doi:10.1016/j.foodchem.2009.04.059
- Juan Armada and Alfredo Barra, "On Aloysia Palau (Verbenaceae)", Taxon 41 (1992:88f), note a recently discovered anonymous six-page printed booklet, dated Madrid 1779, reporting the new species, which they assert is correctly Aloysia citrodora (Palau).
- "un nuevo génera de planta consagrado a la Princesa de Asturias nuestra señora" in the title of the anonymous booklet.
- Sir James Edward Smith's furious account of the affair in Rees' Cyclopedia, is noted by Coats (1964) 1992.
- "RHS Plant Selector - Aloysia citrodora". Royal Horticultural Society. Retrieved 20 May 2013.