 
| Genus Name | Genus | Grex Name | Year | Author | |
|---|---|---|---|---|---|
| Add+ | Dendrobium | Den | bicostatum | 1906 | J.J.Sm. | 
| Add+ | Dendrobium | Den | mattangianum | 1910 | Kraenzl. in H.G.A.Engler (ed.) | 
| Add+ | Ephemerantha | Ephem | bicostata | 1961 | (J.J.Sm.) P.F.Hunt & Summerh. | 
| Add+ | Desmotrichum | Des | bicostatum | 1910 | (J.J.Sm.) Kraenzl. in H.G.A.Engler (ed.) | 
 
 
