amir rineh - science and research branch islamic azad university tehran
azadeh hosseinzadeh - mani chemical industries co MANICO Amol
nima eslami - mani chemical industries co MANICO Amol
mahbubeh abbasi - department of chemistry qaemshahr

the composition of essential oil samples obtained by hydrodistillation of the leaves and flowers of calendula tripterocarpa , were investigated by GC and GC-MS. Fifteen components in the oil of leaf 93.6% of the total oil and 17components int the oil of flowers representing 96% of the total oil were identified.

calendula tripterocarpa,labiatae,essential oil composition,sesqiterpenes, hydrodistillation, a-pinene