Link: http://pinenutsyndrome.wordpress.com/2011/01/16/updated-pine-nut-species-page/

I have the greatest respect for Ms. Grace Tan's research and her intellectual honest, not to mention blog and research skill set and vision.  Highly recommendthis blog for pine nut research, pine nut species information, pine nut mouth, entitled: The Great Pine Nut Mystery  She is the only resource on pine nut mouth which has done the research and had a clue about the problem.