| Name | Crataegus crus-galli f. spinulosa Rickett |
| Authorship | Rickett |
| Rank | Forma |
| Placed in | Crataegus crus-galli Linnaeus |
| Citation | 1937 Bot. Gaz. 98(3): 613 |
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| Name | Crataegus crus-galli f. spinulosa Rickett |
| Authorship | Rickett |
| Rank | Forma |
| Placed in | Crataegus crus-galli Linnaeus |
| Citation | 1937 Bot. Gaz. 98(3): 613 |