| taxonName | relationship | relatedTaxonName | relatedTaxonRefText | relComments |
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| Crataegus pruinosa var. pruinosa | < | Crataegus flabellata | Radford, Ahles, and Bell (1968) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus pruinosa var. pruinosa | Fernald (1950) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus pruinosa var. pruinosa | Gleason (1952) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus pruinosa var. delawarensis | Fernald (1950) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus pruinosa var. delawarensis | Gleason (1952) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus rugosa | Fernald (1950) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus rugosa | Gleason (1952) | |
| Crataegus pruinosa var. pruinosa | >< | Crataegus pruinosa | Kartesz (1999) | |
| Crataegus pruinosa var. pruinosa | >< | Crataegus pruinosa | | |
| Crataegus pruinosa var. pruinosa | > | Crataegus arcana | Kartesz (1999) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus arcana | Kalkman in Kubitzki (2004). | |
| Crataegus pruinosa var. pruinosa | > | Crataegus rustica | Kalkman in Kubitzki (2004). | |
| Crataegus pruinosa var. pruinosa | > | Crataegus vicinalis | Kalkman in Kubitzki (2004). | |
| Crataegus pruinosa var. pruinosa | > | Crataegus gattingeri | Fernald (1950) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus gattingeri var. gattingeri | Gleason (1952) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus gattingeri var. rigida | Gleason (1952) | |
| Crataegus pruinosa var. pruinosa | > | Crataegus georgiana | Kalkman in Kubitzki (2004). | |
| Crataegus pruinosa var. pruinosa | > | Crataegus pruinosa var. pruinosa | Kalkman in Kubitzki (2004). | |
| Crataegus pruinosa var. pruinosa | > | Crataegus pruinosa var. gattingeri | Kalkman in Kubitzki (2004). | |
| Source: Weakley's Flora |
