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Total Plants: 315
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Plant Low PPM High PPM StdDev *Reference
Origanum syriacum Shoot -- 55.0 -0.2 Fleisher, A. & Fleisher, Z. 1991. Chemical Composition of Origanum syriacum L. Essential Oil. J. Ess. Oil Res. 3: 121-123.
Origanum sipyleum Shoot -- 105.0 -0.2 Baser, K.H.C., Ozek, T., Kurkcuoglu, M. and Tumen, G. 1992. Composition of the Essential Oil of Origanum sipyleum of Turkish Origin. J. Ess. Oil Res. 4: 139-142.
Pelargonium graveolens Plant 30.0 505.0 -0.3 *
Pelargonium citrosum Shoot -- 85.0 -0.2 Matsuda, B. M., et al. 1996. Essential Oil Analysis and Field Evaluation of the Citrosa Plant 'Pelargonium citrosum' as a Repellent Against Populations of Aedes Mosquitoes. J. Am. Mosq. Contr. Assoc. 12(1):69-74.
Perilla frutescens Plant -- -- Kang, R., Helms, R., Stout, M.J., Jaber, H., Chen, Z., and Nakatsu, T. 1992. Antimicrobial Activity of the Volatile Constituents of Perilla frutescens and Its Synergistic Effects with Polygodial. J. Agric. Food Chem., 40: 2328-2330.
Petroselinum crispum Leaf -- 0.12 -0.4 *
Peumus boldus Leaf 3400.0 4300.0 2.1 *
Pimenta racemosa Leaf 130.0 1020.0 0.2 *
Pimenta dioica Leaf -- 5.0 -0.4 *
Pimpinella anisum Fruit -- 50.0 -0.6 *
Piper nigrum Fruit -- -- *
Piper cubeba Fruit -- -- *
Plantago asiatica Flower -- -- *
Plantago asiatica Root -- -- *
Plantago asiatica Leaf -- -- *
Plumeria acutifolia Flower -- -- *
Prunus cerasus Fruit -- -- *
Prunus armeniaca Fruit -- -- *
Psoralea corylifolia Seed -- -- *
Pycnanthemum pycnanthemoides Shoot 26598.0 39556.0 7.0 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.