CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous please submit it to the forms submit new counts, or report erroneous counts.
CCDB → Angiosperms → Ulmaceae → Zelkova
| Taxon name | Status | Median (n) |
| Zelkova abelicea (Lam.) Boiss. | Accepted | 14 |
| Zelkova schneideriana H. -Mazz. | Accepted | 14 |
| Zelkova serrata (Thunb.) Makino | Accepted | 14 |
| Zelkova sinica C. K. Schneid. | Accepted | 14 |
| Zelkova carpinifolia (Pall.) Dipp. | Synonym of Zelkova carpinifolia (Pall.) K. Koch | 14 |
| Zelkova serrata | Synonym of Zelkova serrata (Thunb.) Makino | 14 |