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| Chemical Name | Dosage | Reference |
|---|---|---|
| ZINC | not available | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Cucurbita maxima | Pumpkin | 1 | 54 |
| Cucurbita pepo | Pumpkin | 1 | 200 |
| Cucurbita spp | Summer Squash | 1 | 41 |
| Cuminum cyminum | Cumin | 1 | 116 |
| Curcuma longa | Turmeric; Indian Saffron | 1 | 47 |
| Cymbopogon citratus | West Indian Lemongrass; Lemongrass | 1 | 0 |
| Cynanchum atratum | Bai-Wei; Pai-Wei | 1 | 62 |
| Cynara cardunculus | Artichoke | 1 | 36 |
| Cyperus rotundus | Nutsedge | 1 | 33 |
| Cypripedium pubescens | Ladyslipper | 1 | 67 |
| Cyrtosperma chamissonis | Swamp Taro | 1 | 50 |
| Daucus carota | Carrot | 1 | 79 |
| Dendrobium nobile | Noble Dendrobium | 1 | 26 |
| Dioscorea alata | Greater Yam; Winged Yam | 1 | 34 |
| Dioscorea bulbifera | Air Potato; Potato Yam | 1 | 24 |
| Dioscorea sp. | Wild Yam | 1 | 56 |
| Dioscorea villosa | Wild Yam | 1 | 5.599999904632568 |
| Diospyros virginiana | American Persimmon | 1 | 187 |
| Drynaria fortunei | Fortune's Fern | 1 | 17 |
| Echinacea purpurea | Echinacea; Eastern Purple-Coneflower; Purple-Coneflower | 1 | 15.299999713897705 |