Plant | Low PPM | High PPM | StdDev | *Reference | |
---|---|---|---|---|---|
Umbellularia californica | Plant | 30.0 | 120.0 | 1.0 | * |
Hypericum perforatum | Plant | 0.15 | 2.7 | -1.0 | * |
Boswellia sacra | Essential Oil | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
Pimenta dioica | Plant | -- | -- | * |