| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Pimpinella anisum | Seed | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. | |
| Pimpinella anisum | Seed Essent. Oil | -- | -- | * | |
| Pimpinella anisum | Plant | -- | -- | * | |
| Pimpinella anisum | Essential Oil | -- | -- | * | |
| Piper nigrum | Fruit | -- | -- | * | |
| Piper nigrum | Leaf Essent. Oil | -- | -- | * | |
| Piper auritum | Leaf | -- | -- | Tramil | |
| Piper betel | Leaf | 535.0 | 17850.0 | 1.3 | * |
| Pogostemon cablin | Plant | -- | -- | * | |
| Polianthes tuberosa | Flower | -- | -- | * | |
| Prunus dulcis | Flower | -- | -- | * | |
| Prunus cerasus | Plant | -- | -- | * | |
| Psidium guajava | Essential Oil | -- | -- | * | |
| Ptychopetalum olacoides | Root | -- | -- | Ito, Y., Hirayama, F., Aikawa, Y., Kondo, H., Sagara, K., Shoji, J. 1995. Constituents from Muira-Puama (The Roots of Ptychopetalum olacoides). Nat. Med. 49, 4: 487. | |
| Pueraria montana | Fruit Essent. Oil | -- | -- | * | |
| Pycnanthemum setosum | Shoot | 60.0 | 93.0 | -0.4 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Ravensara aromatica | Bark | -- | 110.0 | -0.7 | * |
| Ravensara aromatica | Leaf | -- | 60.0 | -0.8 | * |
| Rosa gallica | Flower | 2.0 | 4.0 | -0.4 | * |
| Rosa damascena | Essential Oil | -- | -- | * |