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Breutelia tomentosa (Sw. ex Brid.) A. Jaeger, Leptodontium viticulosoides (P. Beauv.) Wijk & Margad., Macromitrium perreflexum Steere, Campylopus richardii Brid., Rhacocarpus purpurascens (Brid.) Paris., and Thuidium peruvianum Mitt. essential oils were obtained by hydrodistillation. Using gas chromatography/flame ionization detector (GC/FID) and Gas chromatography/Mass spectrometry (GC/MS), a total of ninety four constituents were identified, representing for 80.5 93.8 % of the chemical composition. The major components were epizonarene (8.7 %) and α-selinene (6.7 %) in the oil of B. tomentosa, β-selinene (13.5 %) and α-selinene (10.5 %) in the oil of L. viticulosoides, selina-3,11-dien-6-α-ol (19.7 %) and curcuphenol (10.6 %) in the oil of M. perreflexum, epi-α-muurulol (15.1 %) and α-cadinol (12.5 %) in the oil of C. richardii. α-cadinol (36.8 %) and α-santalene (8.4 %) in the oil of R. purpurascens, and phytol (21.7 %) and valerenol (10.1 %) in the oil of T. peruvianum. [ABSTRACT FROM AUTHOR]