“Cypress Oil is distilled from the leaves (needles) and twigs of the evergreen, Cypressus Sempervirens, and possibly from other species of Cypressus. However, only oils distilled from the sempervirens species should be accepted as Cypress Oil. The tree presumably originated in the eastern Mediterranean countries, and now grows both wild and cultivated (primarily as a windbreaker) along the coasts of southern France, Italy. Corsica, Sardinia, Sicily, North Africa, Spain and Portugal, and, to a lesser degree, in the Balkan countries. “
Arctander, Steffen . Perfume and Flavor Materials of Natural Origin (p. 248)