Fig. 4. Principal component analysis (PCA) of leaf essential oils of Lychnophora pinaster populations and climatic factors located at the North region (North 01, North 02, and North 03), and Metropolitan region of Belo Horizonte (MrBH, MrBH 01 and MrBH 02). α-thujene (s01); α-pinene (s02); 4Z-hepten-1-ol (s03); ethyl-3-methyl pentanoate (s04); sabinene (s05); β-pinene (s06); dehydroxy-trans-linalool oxide (s07); o-cymene (s08); limonene (s09); terpinene (s10); terpinolene (s11); linalool (s12); n-nonanal (s13); trans-pinocarveol (s14); terpinen-4-ol (s15); α-terpineol (s16); mirtenal (s17); n-decanal (s18); undecanal (s19); geranyl acetate (s20); β-elemene (s21); α-cyperene (s22); cis-caryophyllene (s23); trans-caryophyllene (s24); α-humulene (s25); cumacrene (s26); tridecanal (s27); 4-oxo-15-nor-eudesman-11-ene (s28); Z-nerolidol (s29); sesquiterpene 1 (s30); α-copaen-11-ol (s31); epi-longipinanol (s32); spathulenol (s33); caryophyllene oxide (s34); β-copaen-4α-ol (s35); viridiflorol (s36); sesquiterpene 2 (s37); sesquiterpene 3 (s38); allo-aromadendrene epoxide (s39); cedr-8(15)-en-9-α-ol (s40); 14-hydroxy-(Z)-caryophyllene (s41); 14-hydroxy-9-epi-(E)- caryophyllene (s42); germacrone (s43); (2E)-tridecenol acetate (s44); 14-hydroxy-α-humulene (s45); 14- hydroxy-4,5-dihydro-caryophyllene (s46); benzyl benzoate (s47); γ-curcumen-15-al (s48); sesquiterpene 4 (s49); 14-acetoxy-α-humulene (s50); alt: altitude; cld: cloud cover; dtr: diurnal temperature range; pet: evapotranspiration; pre: precipitation; tmn: minimum temperature; tmx: maximum temperature; tmp: mean temperature; vap: vapor pressure; wet: wet day frequency.