Data Views Total Plants: 41 CSV Excel PDF Total Activities: 1 , Previous123 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All Essential Oil Fruit Fruit Essent. Oil Gum Leaf Leaf Essent. Oil Pericarp Plant Resin, Exudate, Sap Root Seed Seed Essent. Oil Shoot Stem Essent. Oil Low PPM High PPM StdDev *Reference Thymus mastichina Plant -- 1.0 -0.9 Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. *Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.