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CCDB → Angiosperms → Rosaceae → Crataegus → Crataegus douglasii var. douglasii
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Crataegus douglasii var. douglasii | Crataegus douglasii Lindl. | 68 | IPCN online | Campbell, C. S. & T. A. Dickinson. 1990. Apomixis, patterns of morphological variation, and species concepts in subfam. Maloideae (Rosaceae). Syst. Bot. 15: 124–135. |