The essential oil composition from Sideritis tragoriganum has been investig
ated by capillary gas chromatography and gas chromatography-mass spectromet
ry. Among the 47 identified mono- and sesquiterpenes, alpha -bisabolol is t
he most prominent component. Correlation analysis of essential oil componen
ts from this population of S. tragoriganum with two other geographically di
stinct populations revealed the existence of unrelated chemical types.