FAMILY: Verbenaceae
SYNONYMS: A. citriodora, Verbena triphylla, Lippia citriodora, L. triphylla, verbena, herb Louisa.
GENERAL DESCRIPTION: A handsome deciduous perennial shrub up to 5 metres high with a woody stem, very fragrant, delicate, pale green, lanceolate leaves arranged in threes, and small, pale purple flowers. Often grown as an ornamental bush in gardens.
DISTRIBUTION: Native of Chile and Argentina; cultivated (and found semi-wild) in the Mediterranean region – France, Tunisia, Algeria – as well as Kenya and China. The oil is mainly produced in southern France and North Africa.
OTHER SPECIES: Botanically related to the oregano family – see Botanical Classification section. Not to be mistaken for the so-called ‘Spanish verbena’ or ‘verbena’ oil (Spanish) (Thymus hiamalis), nor confused with the herb ‘vervain’ (Verbena officinalis). This is further confused since the French name for verbena is verveine (Verveine citronelle, Verveine odorante).
HERBAL/FOLK TRADITION: ‘The uses of lemon verbena are similar to those of mint, orange flowers and melissa.’. It is indicated especially in nervous conditions which manifest as digestive complaints. The dried leaves are still used as a popular household tea especially on the Continent, both as a refreshing, uplifting ‘pick-me-up’ and to help restore the liver after a hang-over.
ACTIONS: Antiseptic, antispasmodic, carminative, detoxifying, digestive, febrifuge, hepatobiliary stimulant, sedative (nervous), stomachic.
EXTRACTION: Essential oil by steam distillation from the freshly harvested herb.
CHARACTERISTICS: A pale olive or yellow mobile liquid with a sweet, fresh, lemony, fruity-floral fragrance. It blends well with neroli, palmarosa, olibanum, Tolu balsam, elemi, lemon and other citrus oils.
PRINCIPAL CONSTITUENTS: Citral (30–35 per cent), nerol and geraniol, among others.
SAFETY DATA: Possible sensitization; phototoxicity due to high citral levels. Other safety data is unavailable at present – however, true verbena oil is virtually non-existent. Most so-called ‘verbena oil’ is either from the Spanish verbena (an inferior oil), or a mix of lemongrass, lemon, citronella, etc.
AROMATHERAPY/HOME: USE
Digestive system: Cramps, indigestion, liver congestion.
Nervous system: Anxiety, insomnia, nervous tension and stress-related conditions.
OTHER USES: Used in perfumery and citrus colognes – ‘eau de verveine’ is still popular in France, Europe and America.