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Lavandula latifolia Medik. - Lamiaceae - broadleaf lavender, spike lavender, Breitblättriger Lavendel, Speik, Spanischer Lavendel
Aromatic shrub, up to 80cm tall, native to the western Mediterranean region, cultivated and naturalized elsewhere; flowers pale lilac.
The composition of the essential oil of the flowers (spike lavender oil) in seven natural populations of Lavandula latifolia from the eastern Iberian Peninsula was analysed and suggests the existence of three groups of
essential oils with high, intermediate and low percentage of linalool, respectively.
Group I possesses linalool-rich oils (42-54%), with the lowest percentage of camphor (11-13%) and 20-28% of cineole. Group II, whose oils have an intermediate proportion of linalool (31-36%) and higher percentages of camphor (15-18%), limonene, β-caryophyllene and borneol, whereas cineole percentages range from 28 to 34%. The group III is characterized on the one hand by the highest percentage (47.9%) of cineole and on the other hand by their richness in α- and β-pinene, sabinene, myrcene, and sabinene hydrate, but the lowest linalool content (15.1%) and a 16.5% of camphor. Lavandulyl acetate was completely absent in all oils and lavandulol content was 0.2-1.0%.
[Essential oil variation within and among natural populations of Lavandula latifolia and its relation to their ecological areas., Muñoz-Bertomeu, J., Arrillaga, I., Segura, J., Biochemical systematics and Ecology, Vol.35(8), 2007, 479-488] http://www.researchgate.net/publication/223687891_Essential_oil_variation_within_and_among_natural_populations_of_Lavandula_latifolia_and_its_relation_to_their_ecological_areas/file/60b7d52a09bd39f069.pdf