What is "dimorphorchis"

Dimorphorchis is a genus of flowering plants from the orchid family, Orchidaceae. It contains 5 known species, all endemic to Borneo.

1. Dimorphorchis graciliscapa (A.L.Lamb & Shim) P.J.Cribb - Sabah
2. Dimorphorchis lowii (Lindl.) Rolfe
3. Dimorphorchis rohaniana (Rchb.f.) P.J.Cribb
4. Dimorphorchis rossii Fowlie - Sabah
5. Dimorphorchis tenomensis (A.L.Lamb) P.J.Cribb - Sabah