| Arten: |
| Harrisia aboriginum Small |
| Harrisia adscendens (Gürke) Britton & Rose |
| Harrisia balansae (K.Schum.) N.P.Taylor & Zappi |
| Harrisia brookii Britton |
| Harrisia divaricata (Lam.) Backeb. |
| Harrisia earlei Britton & Rose |
| Harrisia eriophora (Pfeiff.) Britton & Rose |
| Harrisia fernowii Britton |
| Harrisia gracilis (Mill.) Britton |
| Harrisia hurstii W.T.Marshall |
| Harrisia martinii (Labour.) Britton |
| Harrisia nashii Britton |
| Harrisia pomanensis (F.A.C.Weber) Britton & Rose |
| Harrisia pomanensis subsp. pomanensis |
| Harrisia pomanensis subsp. regelii (Weing.) R.Kiesling |
| Harrisia portoricensis Britton |
| Harrisia simpsonii Small |
| Harrisia taetra Areces |
| Harrisia taylori Britton |
| Harrisia tephracantha (Labour.) D.R.Hunt |
| Harrisia tortuosa (J.Forbes ex Otto & A.Dietrich) Britton & Rose |