| Name | Crataegus pruinosa f. angulata (Sargent) E. J. Palmer |
| Authorship | (Sargent) E. J. Palmer |
| Rank | Forma |
| Placed in | Crataegus pruinosa (J. C. Wendland) K. Koch |
| Citation | 1935 Ann. Missouri Bot. Gard. 22(3): 562 |
| Holdings | 31 Specimens held in the Harvard University Herbaria identified as Crataegus pruinosa f. angulata (Sargent) E. J. Palmer |
| Identification made in | [no date] (31) |