| Name | Crataegus sinaïca subsp. rossii K. I. Christensen |
| Authorship | K. I. Christensen |
| Rank | Subspecies |
| Placed in | Crataegus ×sinaïca Boissier |
| Citation | 1992 Syst. Bot. Monogr. 35: 127 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Crataegus sinaïca subsp. rossii K. I. Christensen |
| Identification made in | 2011 (1) |