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 → Apiaceae → Osmorhiza
| Taxon name | Status | Median (n) |
| Osmorhiza aristata Makino & Jabe | Accepted | 11 |
| Osmorhiza brachypoda Torr. ex Durand | Accepted | 11 |
| Osmorhiza chilensis Hook. & Arn. | Accepted | 11 |
| Osmorhiza depauperata Phil. | Accepted | 11 |
| Osmorhiza longistylis (Torr.) DC. | Accepted | 11 |
| Osmorhiza mexicana Griseb. | Accepted | 11 |
| Osmorhiza aristata (Thunb.) Rydb. | Unresolved | 11 |
| Osmorhiza claytonii (Michx.) C. B. Clarke | Synonym of Osmorhiza aristata var. aristata | 11 |
| Osmorhiza chilensis None | Synonym of Osmorhiza chilensis Hook. & Arn. | 11 |
| Osmorhiza occidentalis None | Synonym of Osmorhiza occidentalis (Nutt.) Torr. | 11 |