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CCDB → Angiosperms → Cactaceae → Harrisia
| Taxon name | Status | Median (n) |
| Harrisia adscendens (Gürke) Britton & Rose | Accepted | 11 |
| Harrisia hahniana (Backeb.) Kimnach & Hutchison ex Kimnach | Accepted | 11 |
| Harrisia pomanensis (F. A. C. Weber) Britton & Rose | Accepted | 22 |
| Harrisia portoricensis Britton | Synonym of Cereus portoricensis (Britton) Urb. | 11 |