Reports of the nine named infraspecific variants of Sarracenia purpurea L. are critically reviewed and bibliography listed. The author concludes that at present, three of these are acceptable: ssp. purpurea, ssp. venosa and f. heterophylla. “Horticultural vari ety Louis Burk” (Wherry) may also be a genetic entity sufficiently discontinuous for separate designation but requires further study.