Data Views Total Plants: 3 CSV Excel PDF Click on column headings to sort the list on the column Plant Part All parts ... Essential Oil Leaf Seed Low PPM High PPM StdDev *Reference Mentha spicata Leaf 900.0 2250.0 * Carum carvi Essential Oil -- 10.0 * Anethum graveolens Seed -- -- * *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.