Re: in what plants would one find naturally occuring nicotine or nicotine acid

I think you need to confine your search and reevaluate your argument a bit. While nicotine (left) is the active, habit-forming ingredient in cigarettes, nicotinic acid (right), also called niacin, is a vitamin in the B-complex that is found in every living organism. There is a list of plants that contain nicotine at: Dr. Duke's Phytochemical and Ethnobotanical Databases. The replacement of the carboxylic acid of nicotinic acid with a second ring (N-methylpyrrolidone) changes the chemical activity of nicotine dramatically.