Quote[/b] ]A recent paper by Naczi et al. (1999) validly published the name Sarracenia rosea for a plant already bearing the name Sarracenia purpurea subsp. venosa var. burkii. You are free to use whichever of these two names you think is more appropriate. If you feel that this plant is a member of the species Sarracenia purpurea, then you would call it Sarracenia purpurea subsp. venosa var. burkii. If you feel it is different enough to warrant being called a separate species, you could call it Sarracenia rosea. I have been contacted by a number of people who think it should be considered a separate subspecies -- however, names "Sarracenia purpurea subsp. burkii" or "Sarracenia purpurea subsp. rosea" have not been published in accordance with the ICBN, so using either would be only creating another illegitimate name, and more confusion.