ABSTRACT
In this report the comparative chemical composition of the essential oils of Rosmarinus eriocalyx Jordan & Fourr., R. tomentosus Huber-Morath & Maire and their hybrids with R. officinalis L.: R. x lavandulaceus De Noe and R. x mendizabalii Sagredo ex Rosúa is presented. No significant differences were found in the composition of each oil. They all belonged to the common chemotype α-pinene/1,8-cineole/camphor.