You're right, but I think Weed/Shrooms/Salvia, which are things that are directly used from the earth should not be in the same category as heroin/cocaine/opiates because chemicals have to be extracted from them, they need to be heavily messed with before getting the actual substance. I just dont think that fungi/weed/salvia should be called drugs, just to disassociate them with the other stuff, not because they do not fit into the drug category.
oh and for the herbs...http://www.kalyx.com/store/prodpage5.cfm/CategoryID/1000.0/SubCatID/2480.0/file.htm
/super high