Volatile Constituents ofSalvia limbata, Stachys turcomanica, Scutellaria litwinowiiandHymenocrater elegansFour Lamiaceae Herbs from Iran

The composition of the essential oils from four Lamiaceae species of Iran: Salvia limbata C.A. Mey. (syn. S.chrysadenia), Stachys turcomanica Trautv., Scutellaria litwinowii Bornm. & sint.ex Bornm.(syn. S. chorassanica) and hymenocrater elegans Bunge. (syn. H. paniculata) obtained by hydrodistillation were analysed by GC and GC/MS. Germacrene D (24.5 %), (Z)-(3ocimene (14.2 %) and bicyclogermacrene (11.7 %) were the main components among the thirty-eight constituents characterized in the oil of Salvia limbata representing 98.8 % of the total components detected. Twenty-eight compounds were identified in the oil of Stachys turcomanica representing 93.0 % of the total oil with germacrene D (17.4 %), 7-epi-α-selinene (10.5 %), βelemene (9.2 %) and β-pinene (8.6 %) as the major constituents. The oil of Scutellaria litwinowii was characterized by higher amount of (E)-β-farnesene (20.3 %) and germacrene D (16.9 %) among the thirty-two components comprising 91.9 % of the total oil detected.Ninteen compounds were identified in the oil of hymenocrater elegans representing 92.0 % of the total oil with spathulenol (49.5 %) and caryophyllene oxide (12.9 %) as the major constituents.