| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Citrus paradisi | Fruit | -- | 140.0 | -1.1 | * |
| Citrus sinensis | Fruit | 180.0 | 1359.0 | -0.2 | USDA's Ag Handbook 8 and sequelae) |
| Citrus reticulata | Fruit | 440.0 | 3546.0 | 1.3 | USDA's Ag Handbook 8 and sequelae) |
| Coccinia grandis | Flower | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Cocos nucifera | Leaf | -- | -- | Jim Duke's personal files. | |
| Cocos nucifera | Seed | 770.0 | 1455.0 | -1.2 | USDA's Ag Handbook 8 and sequelae) |
| Colocasia esculenta | Root | 340.0 | 1160.0 | -0.6 | * |
| Colocasia esculenta | Leaf | 1140.0 | 7950.0 | 1.3 | * |
| Corchorus olitorius | Leaf | 690.0 | 8950.0 | 1.8 | * |
| Coriandrum sativum | Fruit | -- | -- | * | |
| Crocus sativus | Bulb | -- | -- | * | |
| Cryptotaenia japonica | Root | -- | -- | * | |
| Cucumis sativus | Fruit | 80.0 | 2025.0 | 0.2 | * |
| Cucurbita spp | Fruit | 250.0 | 3955.0 | 1.6 | * |
| Cucurbita foetidissima | Seed | 5835.0 | 19000.0 | 3.4 | * |
| Cucurbita pepo | Seed | 6810.0 | 9615.0 | 0.9 | * |
| Cucurbita pepo | Fruit | 140.0 | 1905.0 | 0.1 | * |
| Daucus carota | Root | 160.0 | 1310.0 | -0.5 | * |
| Dioscorea pentaphylla | Root | 300.0 | 1615.0 | -0.2 | * |
| Fagopyrum esculentum | Seed | -- | 2750.0 | -0.9 | Laferriere, J.E., 1988, Nutricomp Program, Nutricomp Database; reviewed in J. Ethnobiology 9(1):27-29. |