Hydrodistilled essential oils from the leaves of Acmadenia alternifolia Cham., A. obtusata (Thunb.) Batl. et H.L.
Wendle and A. sheilae I. Williams were analyzed by GC and GC/MS. Twenty-two compounds were characterized in the oil of A. alternifolia representing 94.6% of the total composition. Main compounds were monoterpene hydrocarbons: β-pinene (30.6%), β-phellandrene (17.8%), α-pinene (14.5%), limonene (6.9%) and sabinene (6.6%). Forty-seven compounds were characterized in the oil of A. obtusata representing 96.7% of the oil with monoterpene hydrocarbons α-pinene (27.4%), β-phellandrene (23.2%), β-pinene (15.1%) and limonene (7.5%) and a linear monoterpene alcohol
linalool (7.6%) as main constituents. In the oil of A. sheilae, 26 compounds were characterized representing 94.6% of the total oil. Monoterpene hydrocarbons were also predominant in this oil with acyclic monoterpene myrcene (25.1%) together with sabinene (16.1%), β-pinene (9.3%), α-pinene (9.3%) and linalool (9.0%) as main constituents.