Relevância da Lippia alba (Mill.) N. E. Brown (Verbenaceae) entre as espécies de uso medicinal no município de Cruz das Almas, BA

Abstract

The aim of this study was to characterize the relevance of Lippia alba (Mill.) N. E. Brown among species of medicinal use in Cruz das Almas, BA. The agreement and knowledge of the species was evaluated through an ethnobotanical survey and ethnopharmacological. Genetic diversity was obtained by clustering analysis of 13 accesses the species, considering both qualitative and quantitative descriptors, according to the algorithm Gower. Analyzes were performed on micrographs of scanning electron microscopy showing the trichomes of access of each group formed. We interviewed 23 informants who cited 77 species distributed in 43 families. The values of the quantitative measures presented for Lippia alba (Mill.) N. E. Brown were: 1) Value of use agreement main: 78.26; 2) Relative importance: 1.68, 3) Value consensus value and importance of use: 1.0. They formed two groups (CCC: 0.961 **): 1) Group 01: 05- 07 ligulate flowers, petals purple coloration; smaller height values of the largest branch, leaf length, leaf blade width and diameter in the middle of central disk of the inflorescence, and; higher content of essential oils and glandular trichomes, showing the second; carvone (28.77% to 60.90%) and germacrene D (16.90 to 32.87%) as constituents majority and, 2) group 02: 08-11 ligulate flowers, petals light mauve colouration; higher values of greater height branch, leaf length, leaf blade width and diameter of the middle central disc inflorescence, and; lower content of essential oil, and glandular trichomes, showing the first, and as the major constituents geranial (10.10% to 25.63%) and neral (6.367% to 16.30%).