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CCDB → Angiosperms → Plantaginaceae → Isoplexis
| Taxon name | Status | Median (n) |
| Isoplexis canariensis (L.) Loudon | Unresolved | 28 |
| Isoplexis chalcantha Svent. & O'Shan. | Unresolved | 28 |
| Digitalis canariensis L. | Synonym of Isoplexis canariensis (L.) Loudon | 28 |
| Digitalis isabelliana (Webb) Linding. | Synonym of Isoplexis isabelliana (Webb & Berthel.) Mansf. | 28 |
| Digitalis isabelliana (Webb) Linding. | Synonym of Isoplexis isabelliana (Webb & Berthel.) Mansf. | 28 |