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CCDB → Angiosperms → Acanthaceae → Nelsonia
| Taxon name | Status | Median (n) |
| Nelsonia canescens (Lam.) Spreng. | Accepted | 17 |
| Nelsonia campestris R. Br. | Synonym of Nelsonia canescens (Lam.) Spreng. | 17 |