Abstract The fruit essential oil of Lomatium foeniculaceum ssp. fmbriatum collected from the Inyo National Forest in California contained myrcene (24.5%), β-phellandrene/limonene (12.9%), germacrene D (13.9%), (E)-β-ocimene (10.4%), and (Z)-ligustilide (9.8%) as the major components. Germacrene D and (Z)-ligustilide also constituted the major components of the stem and leaf oil. (Z)-Falcarinol (38.1%) was the major component of the root essential oil. Key Word Index: Lomatium foeniculaceum ssps. fimbriatum Apiaceaeessential oil compositionmyrceneβ-phellandrenelimonene(E)-β-ocimenegermacrene D(Z)-ligustilide(Z)-falcarinol