Synthetics
Gamma-terpinene has a fresh, citrusy aroma with hints of eucalyptus and pine.
Mosciano, Gerard P&F 18, No. 1, 43, (1993): Terpy, sweet, citrus, with tropical and lime nuances
Luebke, William tgsc, (1989): Oily woody terpene lemon/lime tropical herbal
Pell Wall Perfumes: Fresh, herbaceous, citrusy, terpy, sweet, tropical and lime, woody
Arctander says: “this isomer is the highest boiling of the terpinenes. it has a refreshingly herbaceous-citrusy odor, not as lemony as the alpha-isomer, but somewhat warmer” and warns that “it is easily oxidized to the less desirable para-cymene.”