Baccharis species essential oils from

Samples of the essential oil from one of these species, B. salicifolia collected in the province of Cordoba (Argentina), together with Baccharis crispa Spreng. and Baccharis cordobensis Heering were examined [65,66], The major constituents were nerolidol (15.8%), Fig. (29), cadinol (14.7%), Fig. (30) and cubenol (8.8%) from B. cordobensis, cadinol (9.4%), Fig. (30) and germacrane D (8.8%), Fig. (31) from B. salicifolia and nerolidol (27%), Fig. (29) from B. crispa. 

More recently, Frizzo et al. [69] examined the essential oil from Baccharis uncinella D. C., popularly called Vassoura lageana , which grows wild in the South of Brazil. No previous phytochemical studies have been reported concerning the composition of volatile compounds from this Baccharis species. The monoterpene profile is similar to those reported for other Baccharis, such as B. dracunculifolia and B. crispa, while the sesquiterpene... 

To date more than 100 species from the large genus Baccharis have been investigated chemically. The most widespread compounds are clerodane diterpene derivatives, but labdane derivatives have also been isolated. Furthermore, typical acetylenic compounds, baccharis oxide, a unique triterpene, and derivatives of hydroxyacetophenone are present, although it is mainly other biologically active constituents, e.g. flavonoids, sesquiterpenes and essential oils that have been reported in the last years. The constituents of Baccharis species compiled from different sources are presented below. 

Other endemic species from Argentina such as B. articulatci, Baccharis myrtilloides (Mart.) Pax and Baccharis rufescens Spreng. found in the region of Traslasierra Valley were also investigated [67], The major constituents of their essential oils were for B. articulata (3-caryophyllene (16.8%), Fig. (32) and nerolidol (15,6%), Fig. (29) for B. myrtilloides germacrane D (9.5%), Fig. (31) and for B. rufescens limonene (14.4%), Fig. (33) and nerolidol (14.5%), Fig. (29). 

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