| Scientific Name | Authority | Status |
|---|---|---|
| Oncidium hydrophilum | Barb.Rodr. | synonym |
| Oncidium hydrophilum var. immaculatum | L.C.Menezes | synonym |
| Oncidium hydrophilum f. immaculatum | (L.C.Menezes) Christenson | synonym |
| Ampliglossum hydrophilum | (Barb.Rodr.) Campacci | synonym |
| Coppensia hydrophila | (Barb.Rodr.) Campacci | synonym |
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