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CCDB → Angiosperms → Hypericaceae → Triadenum
| Taxon name | Status | Median (n) |
| Triadenum japonicum (Blume) Makino | Accepted | 18 |
| Triadenum virginicum (L.) Raf. | Accepted | 19 |
| Hypericum virginicum L. | Synonym of Triadenum virginicum (L.) Raf. | 19 |
| Triadenum virginicum subsp. fraseri (Spach) J. M. Gillett | Synonym of Triadenum virginicum var. fraseri (Spach) Cooperr. | 19 |