| Cucurbitaceae | |
Helmontia cardiophylla
| Harms | Notizbl. Bot. Gart. Berlin-Dahlem 11: 772 | 1933 |
| Cucurbitaceae | |
Helmontia leptantha
| (Schltdl.) Cogn. | Diagn. Cucurb. Nouv. 1: 20 | 1876 |
| Cucurbitaceae | ** |
Helmontia paraensis
| Huber | | ** |
| Cucurbitaceae | |
Helmontia simplicifolia
| Cogn. | Diagn. Cucurb. Nouv. 1: 20, 44 | 1876 |
| Cucurbitaceae | |
Helmontia trujilloi
| C. Jeffrey | Kew Bull. 33(2): 352 | 1978 |