Abstract Î²-Pinene (35.0%, 53.8%) was the major component of both the aerial parts and the root oils of Pteryxia terebinthina var. californica, respectively. Î²-Phellandrene (12.2%) was the other most abundant component of the oil from aeial parts while Î´-3-carene (14.2%) was the second abundant component of the root oil.