The aerial parts (~20 cm, 15-100 g) of A. campestris L. from ten different wild populations of Lithuania were gathered at the full flowering stage. Plant material was dried at room temperature (20-25 ℃). Oils (samples 1-10) obtained from Artemisia campestris plants collected at sampling sites (A-I,Y) characterized by locality, city (c.) or district (d.), soil type (Or, ordo; Sn, sand; Sl, sandy loam; Gr, gravel; Lm, loam) and description of natural habitat (Af, abandoned field; Fe, forest edge; Ct, cutting area; Mw, meadow; Rs, roadside; Rv, river valley): A (1) Birstonas c. (Or, Ct); B (2) Palanga c. (Sn, Fe); C (3) Nociunai, Kedainai d. (Or, Mw); D (4) Alytus c. (Sl, Rs); E (5) Moletai c. (Lm, Af); F (6) Kaltanenai, Sencionys d. (Gr, Fe); G (7) Merkine, Alytus d. (Sl, Ct); H (8) Trakai c. (Gr, Af); I (9) Druskininkai c. (Or, Rv); Y (10) Vilnius c. (Gr, Af).

The main chemical profile (ten samples) was characterized by the predominance of germacrene D (9.8-31.2%), while spathulenol, humulene epoxide II and caryophyllene oxide were found as the first major compounds in another three oils. One oil was determined as a mixed chemotype. Some compounds such as gamma-curcumene, alpha-cadinol, (E,E)-alpha-farnesene, beta-ylangene, beta-selinene and humulene epoxide II have been mentioned for the first time among three principal constituents in A. campestris oils. The fifty-six components made up 73.6.1-98.5% of the total content, while the remaining twenty-six volatile compounds were identified in insignificant amounts in the A. campestris essential oils.

Plant material was collected at vegetative stage (stems and leaves,September 2005) and at flowering stage (leaves and flowers,December 2004), inCuritiba,Parana state, Brazil.

Thirty-four components were identified, representing more than 80% of total oil. The major components were beta-caryophyllene (flowers-12.8%), caryophyllene oxide (stems-17.2%), globulol (stems-16.5%; leaves-22.5% at vegetative stage and 18.9% at flowering stage), 1-epi-cubenol (stems-10.9%), epi-alpha-muurolol (stems-16.8%) and alpha-cadinol (stems-12.1%; flowers-10.1%).