| Name | Crataegus phaenopyrum f. fastigiata A. D. Slavin |
| Authorship | A. D. Slavin |
| Rank | Forma |
| Placed in | Crataegus phaenopyrum (Linnaeus f.) Medikus |
| Citation | 1931 Amer. Midl. Naturalist 12(9): 365–366 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Crataegus phaenopyrum f. fastigiata A. D. Slavin |
| Identification made in | [no date] (1) |
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