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 → Pteridophytes → Osmundaceae → Osmundastrum
| Taxon name | Status | Median (n) |
| Osmundastrum cinnamomeum (L.) C. Presl | Accepted | 22 |
| Osmundastrum claytonianum (L.) Tagawa | Synonym of Osmunda claytoniana L. | 22 |
| Osmunda cinnamomea L. | Synonym of Osmundastrum cinnamomeum (L.) C. Presl | 22 |
| Osmunda cinnamomea L. | Synonym of Osmundastrum cinnamomeum (L.) C. Presl | 22 |
| Osmunda cinnamomea var. fokienense Copel. | Synonym of Osmundastrum cinnamomeum (L.) C. Presl | 22 |
| Osmundastrum cinnamomeum var. fokiense (Copel.) Tagawa | Synonym of Osmundastrum cinnamomeum (L.) C. Presl | 22 |