CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous please submit it to the forms submit new counts, or report erroneous counts.
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 |