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CCDB → Angiosperms → Gesneriaceae → Nautilocalyx
| Taxon name | Status | Median (n) |
| Nautilocalyx forgetii (Sprague) Sprague | Accepted | 9 |
| Nautilocalyx peruvianus Wiehler | Accepted | 9 |
| Nautilocalyx porphyrotrichus (Leeuwenb.) Wiehler | Accepted | 9 |
| Nautilocalyx punctatus Wiehler | Accepted | 18 |
| Nautilocalyx villosus (Kunth & C. D. Bouché) Sprague | Accepted | 9 |
| Nautilocalyx bullatus Lem. | Synonym of Nautilocalyx bullatus (Lem.) Sprague | 9 |
| Alloplectus lynchii Hook. | Synonym of Nautilocalyx lynchii (Hook.) Sprague | 17 |
| Alloplectus lynchii Hook. | Synonym of Nautilocalyx lynchii (Hook.) Sprague | 17 |