For those of you that couldn't make it to the conference this summer here is a pdf of my presentation. Sorry there is no audio attached and the file size is so enormous. Any questions, feel free to email me at the address given at the end of the pdf. Also keep in mind that this is my opinion based on my extensive in field experience. I have also since changed my opinion on nearly all the varietal splits within each species, especially S. flava and S. alata. I now believe that the varietal designations based purely on pitcher color are not valid, because in the wild there are practically no populations of "pure" color variants you can find a mix of everything in a single location. Enjoy!