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Total Plants: 4

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Plant	Part	Low PPM	High PPM	^*Reference
Withania somnifera	Leaf	--	--	*
Echinacea pallida	Flower	--	--	Jim Duke's personal files.
Echinacea pallida	Root	--	--	Jim Duke's personal files.
Echinacea pallida	Leaf	--	--	Jim Duke's personal files.

^*Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.