"Plant","Part","Low PPM","High PPM","StdDev","Reference"
"Agathosma betulina","Leaf Essent. Oil",,,,"--"
"Agathosma betulina","Leaf","5250.0","8750.0",,"List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979."
"Barosma betulina","Leaf","5250.0","8750.0",,"--"
"Mentha spicata","Essential Oil",,,,"--"