Scientific classification
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Lamiaceae |
| Genus: | Lavandula |
| Species: | L. stoechas |
Lavandula stoechas L.
Lavandula stoechas, the Spanish lavender or topped lavender (U.S.) or French lavender (U.K.),[1] is a species of flowering plant in the family Lamiaceae, occurring natively in several Mediterranean countries, including France, Spain, Portugal, Italy and Greece.[2]
Description
It is an evergreen shrub that usually grows to between 30 and 100 cm tall and occasionally up to 2 m (6.5ft) tall in the subspecies L. stoechas subsp. luisieri. The leaves are 1–4 cm long, greyish and tomentose. The inflorescence is crowned by a mass of purple elongated ovoid bracts about 5 cm long. The lower flowers form a tight rectangular in cross-section. The upper of the five teeth has a wrong-heart-shaped appendage. The crown is blackish-violet, up to 8 mm long and indistinct two-lipped.
The flowers, which appear in late spring and early summer, are pink to purple, produced on spikes 2 cm long at the top of slender, leafless stems 10–30 cm (4–12 in) long; each flower is subtended by a bract 4–8 mm long. At the top of the spike are a number of much larger, sterile bracts (no flowers between them), 10–50 mm long and bright lavender purple (rarely white). It blooms in spring and early summer, from the month of March in its native habitat, depending on the climate in which it grows.[3]
The Latin specific epithet stoechas comes from the Greek stoichas meaning “in rows”. It is also the Greek name for this species.[4]
Subspecies
The recognised subspecies are:
- L. stoechas pedunculata, the common type specific plant, once taxonomically considered L. pedunculata. There is considerable variation in this subspecies, and it may be split into a number of distinct forms. It is native to many coastal regions of the Mediterranean, with some populations on the Atlantic coasts of Morocco and Spain.[3]
- L. stoechas luisieri, which has petals much less interconnected. It is found mainly in Portugal and adjacent regions of Spain.[3]
Cultivation
This species is more tender than common lavender (Lavandula angustifolia), being less frost-resistant; but harsher and more resinous in its oils. Like other lavenders, it is associated with hot, dry, sunny conditions in alkaline soils. However, it tolerates a range of situations, though it may be short-lived. Hardy down to −10 °C (14 °F)[1] (USDA zones 6–10).
Selected forms are grown as ornamental plants.[3] The cultivars ‘Ballerina’[5] and ‘Willow Vale’[6] have gained the Royal Horticultural Society‘s Award of Garden Merit.[7]
Other uses
Lavandula stoechas is used commercially in air fresheners and insecticides. Flower spikes have been used internally for headaches, irritability, feverish colds and nausea, and externally for wounds, rheumatic pain and as an insect repellent. The lavender also produces essential oils, which are not used economically. The infusion of its dry inflorescences are febrifuge and fight the affections of the chest and bronchi. It is used as antiseptic, digestive, antispasmodic, healing and antibacterial. The flowers are used in aromatherapy, to prepare infusions and essential oils that contain ketones (d-camphor and d-fenchone) and alcohols (borneol and terpineol).[8]
Invasive species
Since its introduction into Australia, it has become an invasive species, widely distributed within the continent. It has been declared a noxious weed in Victoria since 1920. It also is regarded as a weed in parts of Spain.[9]
From Wikipedia, the free encyclopedia
