Abstract The roots of Angelica archangelica L. were collected in three habitats (12 samples) in 1995â2002. The oils were analyzed by GC and GC/MS. The dominant component was α-pinene (15.7â20.8%) for two localities. Other three main constituents were δ-3-carene (15.4â16.9%), limonene (8.0â9.2%), sabinene (5.0â7.5%) for the first locality, and δ-phel-landrene (13.5â15.4%), δ-3-carene (13.2â14.2%) and α-phellandrene (8.0â9.1%) for the second locality. The dominant oil components in the third locality were β-phellandrene (13.8â18.5%) together with α-pinene (11.4â15.0%), δ-3-carene (10.8â11.9%), α-cymene (6.8â10.6%) and α-phellandrene (5.9â8.6%). The oils contained 67.3â79.9% monoterpenoids (monoterpene hydrocarbons made up 60.2â72.6%), 9.6â19.4% sesquiterpenoids, 3.9â6.3% macrocyclic lactones and 1.2â5.3% coumarin osthol. Identified compounds (81 from 96) made up 91.4â99.2% of the oils.