| Scientific Name | Authority | Status |
|---|---|---|
| Limnorchis dilatata var. linearifolia | Rydb. | synonym |
| Tulotis albiflora | Raf. | synonym |
| Limnorchis leptoceratitis | Rydb. | synonym |
| Platanthera dilatata var. angustifolia | Hook. | synonym |
| Limnorchis fragrans | Rydb. | synonym |
| Limnorchis foliosa | Rydb. | synonym |
| Orchis agastachys | Fisch. ex Lindl. | synonym |
| Platanthera cylindrica | Bach.Pyl. | synonym |
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