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 → Bignoniaceae → Catalpa
| Taxon name | Status | Median (n) |
| Catalpa bignonioides Walter | Accepted | 20 |
| Catalpa bungei C. A. Mey. | Accepted | 20 |
| Catalpa ovata G. Don | Accepted | 20 |
| Catalpa speciosa (Warder) Warder ex Engelm. | Accepted | 20 |
| Catalpa hybrida L. Späth | Unresolved | 20 |
| Catalpa bignonioides Walt. | Synonym of Catalpa bignonioides Walter | 20 |
| Catalpa syringifolia Sims | Synonym of Catalpa bignonioides Walter | 20 |