| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Abelmoschus esculentus | Flower | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. | |
| Hibiscus sabdariffa | Flower | -- | -- | * | |
| Larrea tridentata | Plant | -- | -- | * | |
| Rhododendron ponticum | Plant | -- | -- | * | |
| Rhododendron dauricum | Plant | -- | -- | * | |
| Thespesia populnea | Flower | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |