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CCDB → Angiosperms → Compositae → Pentachaeta
| Taxon name | Status | Median (n) |
| Pentachaeta alsinoides Greene | Accepted | 9 |
| Pentachaeta aurea Nutt. | Accepted | 9 |
| Pentachaeta bellidiflora Greene | Accepted | 9 |
| Pentachaeta fragilis Brandegee | Accepted | 9 |
| Pentachaeta lyonii A. Gray | Accepted | 9 |
| Pentachaeta exilis (A. Gray) A. Gray | Unresolved | 9 |
| Pentachaeta exilis subsp. aeolica V. Horn & Ornduff | Unresolved | 9 |
| Pentachaeta exilis subsp. exilis | Unresolved | 9 |
| Chaetopappa alsinoides (Greene) D. D. Keck | Synonym of Pentachaeta alsinoides Greene | 9 |
| Chaetopappa aurea (Nutt.) D. D. Keck | Synonym of Pentachaeta aurea Nutt. | 9 |
| Chaetopappa exilis (A. Gray) D. D. Keck | Synonym of Pentachaeta exilis subsp. exilis | 9 |
| Chaetopappa fragilis (Brandegee) D. D. Keck | Synonym of Pentachaeta fragilis Brandegee | 9 |
| Chaetopappa lyonii (A. Gray) D. D. Keck | Synonym of Pentachaeta lyonii A. Gray | 9 |