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Total Plants: 194
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Plant Low PPM High PPM StdDev *Reference
Rosmarinus officinalis Shoot -- 42.0 -0.0 Tucker, A. O. and Maciarello, M. J. 1998. The essential oils of some rosemary cultivars. Flavor and Fragrance Journal, 1: 137-142. 1986.
Rosmarinus officinalis Shoot Essent. Oil -- 2500.0 -1.3 *
Rosmarinus x mendizabalii Shoot 4.0 38.0 -0.1 Soriano Cano, M.C., Sotomayor Sanchez, J.A., Sanchez Gomez, P. and Garcia Vallejo, M.C. 1993. Essential Oils of the Rosmarinus eriocalyx-tomentosus Complex in Southeast Spain. J. Ess. Oil Res. 5: 243-246.
Rosmarinus eriocalyx Shoot 22.0 80.0 0.4 Soriano Cano, M.C., Sotomayor Sanchez, J.A., Sanchez Gomez, P. and Garcia Vallejo, M.C. 1993. Essential Oils of the Rosmarinus eriocalyx-tomentosus Complex in Southeast Spain. J. Ess. Oil Res. 5: 243-246.
Rheum palmatum Rhizome -- 1.0 *
Pycnanthemum californicum Shoot -- 468.0 4.1 Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980.
Pycnanthemum beadlei Shoot -- 49.0 0.1 Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980.
Pycnanthemum tenuifolium Shoot 8.0 640.0 5.8 Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980.
Ptychopetalum olacoides Root Essent. Oil -- 92000.0 Uber Bucek, E., Fournier, G., Dadoun, H. 1987. Volatile Constituents of Ptychopetalum olacoides Root Oil. Planta Med. 53, 2: 231.
Psidium guajava Pericarp Essent. Oil -- -- *
Psidium guajava Fruit -- 6000.0 2.4 *
Plectranthus coleoides Shoot -- 80.0 0.4 Buchbauer, G., Jorovetz, L., Wasicky, M. and Nikiforov, A. 1993. Volatile Constituents of the Headspace and Essential Oil of Plectranthus coleoides Marginatus (Labiatae). J. Ess. Oil Res. 5: 311-313.
Plectranthus incanus Shoot -- 25.0 -0.2 Shah, G.C., Bhandari, R. & Mathela, C.S. 1992. 1,2-Epoxy-p-Menthane Derivatives from some Labiatae Species. J. Ess. Oil Res. 4: 57-59.
Piper nigrum Fruit -- -- *
Piper nigrum Leaf Essent. Oil -- -- *
Piper nigrum Fruit Essent. Oil 2100.0 19500.0 -1.0 *
Pinus strobus Leaf Essent. Oil -- -- *
Pinus sylvestris Leaf Essent. Oil -- 4600.0 -0.6 *
Pimenta dioica Leaf Essent. Oil -- -- *
Pimenta dioica Fruit -- 405.0 -0.4 *
*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.