| taxonName | relationship | relatedTaxonName | relatedTaxonRefText | relComments | 
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| Sarracenia purpurea var. venosa | = | Sarracenia purpurea ssp. venosa | Flora of North America (1993b, 1997, 2000, 2002a, 2002b, 2003a, 2004b, 2005, 2006a, 2006b, 2006c, 2007a, 2009, 2010) |  | 
| Sarracenia purpurea var. venosa | < | Sarracenia purpurea | Godfrey and Wooten (1979, 1981) |  | 
| Sarracenia purpurea var. venosa | < | Sarracenia purpurea | Mellichamp (2008). |  | 
| Sarracenia purpurea var. venosa | < | Sarracenia purpurea | Radford, Ahles, and Bell (1968) |  | 
| Sarracenia purpurea var. venosa | < | Sarracenia purpurea | Small (1933, 1938) |  | 
| Sarracenia purpurea var. venosa | < | Sarracenia purpurea | Mellichamp (2008). |  | 
| Sarracenia purpurea var. venosa | < | Sarracenia purpurea | Flora of Virginia |  | 
| Sarracenia purpurea var. venosa | < | Sarracenia purpurea | Wofford (1989) |  | 
| Sarracenia purpurea var. venosa | = | Sarracenia purpurea ssp. purpurea var. purpurea |  |  | 
| Sarracenia purpurea var. venosa | = | Sarracenia purpurea ssp. venosa var. venosa |  |  | 
| Sarracenia purpurea var. venosa | = | Sarracenia purpurea ssp. venosa var. venosa | Mellichamp (2008). |  | 
| Sarracenia purpurea var. venosa | = | Sarracenia purpurea ssp. venosa var. venosa | Mellichamp (2008). |  | 
| Sarracenia purpurea var. venosa | = | Sarracenia purpurea var. purpurea | Reveal (1993) |  | 
| Source: Weakley's Flora |