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CCDB → Angiosperms → Compositae → Oncosiphon
| Taxon name | Status | Median (n) |
| Oncosiphon grandiflorum (Thunb.) Källersjö | Accepted | 8 |
| Oncosiphon intermedium (Hutch.) Källersjö | Accepted | 8 |
| Oncosiphon piluliferum (L.) Källersjö | Accepted | 6 |
| Oncosiphon suffruticosum (L.) Källersjö | Accepted | 8 |
| Pentzia grandiflora (Thunb.) Hutch. | Synonym of Oncosiphon grandiflorum (Thunb.) Källersjö | 8 |
| Oncosiphon intermedium (Hutch.) Kallersjo | Synonym of Oncosiphon intermedium (Hutch.) Källersjö | 8 |
| Pentzia intermedia Hutch. | Synonym of Oncosiphon intermedium (Hutch.) Källersjö | 8 |
| Pentzia globifera (Thunb.) Hutch. | Synonym of Oncosiphon piluliferum (L.) Källersjö | 6 |