| Genus Name | Genus | Grex Name | Year | Author | |
|---|---|---|---|---|---|
| Add+ | Cyrtochilum | Cyr | tricostatum | 1922 | Kraenzl. in H.G.A.Engler (ed.) | 
| Add+ | Oncidium | Onc | tricostatum | 1970 | (Kraenzl.) Garay | 
| Add+ | Oncidium | Onc | exasperatoides | 2001 | D.E.Benn. & Christenson | 
| Add+ | Trigonochilum | Tgc | tricostatum | 1994 | (Kraenzl.) Königer & Schildh. | 
| Add+ | Trigonochilum | Tgc | exasperatoides | 2008 | (D.E.Benn. & Christenson) Königer |