| Menispermaceae | |
Orthomene hirsuta
| (Krukoff & Moldenke) Barneby & Krukoff | Mem. New York Bot. Gard. 22(2): 81 | 1971 |
| Menispermaceae | |
Orthomene prancei
| Barneby & Krukoff | Mem. New York Bot. Gard. 22(2): 81–82 | 1971 |
| Menispermaceae | |
Orthomene schomburgkii
| (Miers) Barneby & Krukoff | Mem. New York Bot. Gard. 22(2): 80–81 | 1971 |
| Menispermaceae | |
Orthomene verruculosa
| (Krukoff & Barneby) Barneby & Krukoff | Mem. New York Bot. Gard. 22(2): 81 | 1971 |