| taxonName | relationship | relatedTaxonName | relatedTaxonRefText | relComments |
|---|
|
| Quercus rubra var. ambigua | = | Quercus rubra var. borealis | Fernald (1950) | |
| Quercus rubra var. ambigua | = | Quercus rubra var. borealis | Flora of North America (1993b, 1997, 2000, 2002a, 2002b, 2003a, 2004b, 2005, 2006a, 2006b, 2006c, 2007a, 2009, 2010) | |
| Quercus rubra var. ambigua | = | Quercus rubra var. borealis | Radford, Ahles, and Bell (1968) | |
| Quercus rubra var. ambigua | = | Quercus rubra var. borealis | Flora of West Virginia | |
| Quercus rubra var. ambigua | < | Quercus rubra | Gleason and Cronquist (1991) | |
| Quercus rubra var. ambigua | < | Quercus rubra | | |
| Quercus rubra var. ambigua | < | Quercus rubra | | |
| Quercus rubra var. ambigua | < | Quercus rubra | | |
| Quercus rubra var. ambigua | < | Quercus rubra | | |
| Quercus rubra var. ambigua | < | Quercus rubra | | |
| Quercus rubra var. ambigua | < | Quercus rubra | Flora of Virginia | |
| Quercus rubra var. ambigua | < | Quercus rubra | Wofford (1989) | |
| Quercus rubra var. ambigua | = | Quercus borealis var. borealis | Gleason (1952) | |
| Quercus rubra var. ambigua | = | Quercus borealis | Small (1933, 1938) | |
| Source: Weakley's Flora |