Data Views Total Plants: 44 CSV Excel PDF Total Activities: 4 , Previous123 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All Branches Essential Oil Flower Fruit Fruit Essent. Oil Leaf Pericarp Plant Resin, Exudate, Sap Rhizome Root Shoot Twig Wood Low PPM High PPM StdDev *Reference Citrus aurantium Leaf -- -- Chemical Constituents of Oriental Herbs (3 diff. books) Pogostemon cablin Plant -- -- * Citrus aurantium Plant -- -- * Origanum majorana Plant -- -- * *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.