| Name | Crataegus crus-galli f. rubens (Sargent) E. J. Palmer |
| Authorship | (Sargent) E. J. Palmer |
| Rank | Forma |
| Placed in | Crataegus crus-galli Linnaeus |
| Citation | 1946 Brittonia 5(5): 482 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Crataegus crus-galli f. rubens (Sargent) E. J. Palmer |
| Identification made in | [no date] (1), 1947 (2) |
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