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CCDB → Angiosperms → Malpighiaceae → Janusia
| Taxon name | Status | Median (n) |
| Janusia anisandra (A. Juss.) Griseb. | Accepted | 40 |
| Janusia californica Benth. | Accepted | 10 |
| Janusia gracilis A. Gray | Accepted | 20 |
| Janusia guaranitica (A. S. -Hil.) A. Juss. | Accepted | 19 |
| Janusia janusioides W. R. Anderson | Accepted | 20 |
| Janusia lindmanii W. R. Anderson | Accepted | 20 |
| Janusia linearis Wiggins | Accepted | 10 |
| Janusia mediterranea (Vell.) W. R. Anderson | Accepted | 20 |
| Janusia occhionii W. R. Anderson | Accepted | 20 |
| Janusia prancei W. R. Anderson | Accepted | 20 |
| Janusia schwannioides W. R. Anderson | Accepted | 20 |
| Janusia guaranitica (S. Hil.) Juss. | Synonym of Janusia guaranitica (A. S. -Hil.) A. Juss. | 19 |