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CCDB → Pteridophytes → Thelypteridaceae → Trigonospora
| Taxon name | Status | Median (n) |
| Trigonospora ciliata (Wall.) Holttum | Accepted | 72 |
| Trigonospora sericea (J. Scott) Holttum | Accepted | 72 |
| Trigonospora caudipinna Sledge | Unresolved | 36 |