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CCDB → Angiosperms → Apocynaceae → Piaranthus
| Taxon name | Status | Median (n) |
| Piaranthus comptus N. E. Br. | Accepted | 11 |
| Piaranthus cornutus N. E. Br. | Accepted | 11 |
| Piaranthus decorus (Masson) N. E. Br. | Accepted | 11 |
| Piaranthus framesii Pillans | Accepted | 11 |
| Piaranthus globosus A. C. White & B. Sloane | Accepted | 22 |
| Piaranthus pallidus C. A. Lückh. | Accepted | 11 |
| Piaranthus parvulus N. E. Br. | Accepted | 11 |
| Piaranthus punctatus (Masson) R. Br. ex Schult. | Accepted | 11 |
| Piaranthus ruschii Nel | Accepted | 11 |
| Piaranthus pillansii N. E. Br. | Unresolved | 11 |
| Piaranthus pulcher var. nebrownii (Dinter) A. C. White & B. Sloane | Unresolved | 11 |