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| Chemical Name | Dosage | Reference |
|---|---|---|
| PINOCEMBRIN | IC 3 ug/ml | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| PINOSYLVIN | not available | Duke, 1992 * |
| PIPERADUNCIN-B | not available | Duke, 1992 * |
| PIPERINE | not available | Duke, 1992 * |
| PISATIN | 50 ug/ml | Lydon, J. & Duke, S., The potential of pesticides from plants, pp. 1-41 in Craker, L. & Simon, J., eds, Herbs, Spices & Medicinal Plants: Recent Advances in Botany, Horticulture, & Pharmacology, v. 4, Oryx Press, Phoenix, 1989, 267pp. |
| PLENOLIN | not available | Duke, 1992 * |
| PLICATIPYRONE | MIC=6-12 mg/ml | Duke, 1992 * |
| PLUMBAGIN | not available | Duke, 1992 * |
| PLUMERICIN | not available | Merck 11th Edition |
| POGOSTONE | MIC=39-625 | Russell, G. B., Phytochemical resources for crop protection, N. Z. J. Technol., 2, 1986, 127-134. |
| POLYDATIN | not available | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |
| POLYGONIN | not available | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |
| POLYPHENOLS | not available | Duke, 1992 * |
| PRIMISTERIN | not available | Duke, 1992 * |
| PROANTHOCYANIDINS | not available | Duke, 1992 * |
| PROCYANIDIN | not available | Duke, 1992 * |
| PROCYANIDIN-A-2 | MIC=>1,000 ug/ml | Planta Medica, 57: A42, 1991. |
| PROCYANIDINS | not available | Duke, 1992 * |
| PROTOANEMONIN | not available | Merck 11th Edition |
| PROTOCATECHUIC-ACID | not available | Lamikanra, A., Ogundaini, A.O., and Ogungbamila*, F.O. Antibacterial Constituents of Alchornea cordifolia Leaves. Phytotherapy Research 4(5): 198. |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Rhododendron falconeri | not available | 1 | 0 |
| Rhododendron ferrugineum | Rusty-Leaved Alpenrose | 4 | 0 |
| Rhododendron grande | not available | 1 | 0 |
| Rhododendron ponticum | Pontic Alpenrose | 10 | 120, 000 |
| Rhodomyrtus tomentosa | not available | 1 | 6 |
| Rhodymenia palmata | Dulse | 2 | 153 |
| Rhus coriaria | Sicilian Sumac; Sumac; Tanner's Sumac | 9 | 840, 000 |
| Rhus glabra | Smooth Sumac | 2 | 270, 006 |
| Rhus toxicodendron | Poison Ivy | 3 | 0 |
| Rhynchosia minima | Burn Mouth Vine | 2 | 0 |
| Ribes nigrum | Black Currant | 37 | 164, 114 |
| Ribes rubrum | Red Currant; White Currant | 8 | 68, 528 |
| Ribes uva-crispa | Gooseberry | 10 | 19, 379 |
| Ricinus communis | Castorbean | 13 | 2, 380 |
| Robinia pseudoacacia | Black Locust | 12 | 326, 000 |
| Rollinia mucosa | Biriba; Lancewood | 1 | 2, 900 |
| Rosa canina | Rose; Dogbrier; Dog Rose | 21 | 774, 105 |
| Rosa centifolia | Cabbage Rose | 11 | 1, 200 |
| Rosa damascena | Damask Rose | 20 | 15, 000 |
| Rosa davurica | not available | 1 | 70 |