Xerorchis
Xerorchis is an orchid genus in the subfamily Epidendroideae. It is the sole representative of the tribe Xerorchideae. Xerorchis is only found in South America. Taxonomy

It is unclear whether this genus should be classified in the lower or higher epidendroids. Xerorchis has 8 pollinia, hence similar to the more advanced epidendroid genera of Epidendreae and Arethuseae. Yet its morphology, with unthickened stems and persistent leaves, is that of a bambusoid grass and makes it more similar to Tropidieae or Triphoreae. Range 
According to Plants of the World Online, Xerorchis is native to Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela. References

Xerorchideae genera
Xerorchideae