What is "centroglossa"

Centroglossa is a genus of flowering plants from the orchid family, Orchidaceae. It contains 5 accepted species, all endemic to Brazil:

1. Centroglossa castellensis Brade - Espírito Santo
2. Centroglossa greeniana (Rchb.f.) Cogn. in C.F.P.von Martius - Rio de Janeiro, São Paulo
3. Centroglossa macroceras Barb.Rodr.
4. Centroglossa nunes-limae Porto & Brade - Minas Gerais, Espírito Santo
5. Centroglossa tripollinica (Barb.Rodr.) Barb.Rodr.