SECTION Synsepala

1. Oncidium alvarengueensis [Campacci] in ed.

2. Oncidium barbaceniae Lindl. 1855

3. Oncidium bicolor Lindl. 1843

4. Oncidium bifolium Sims 1812

5. Oncidium blanchetii Rchb. f. 1849

6. Oncidium caldense Rchb.f. 1850

7. Oncidium chapadense V.P.Castro & Campacci 1992

8. Oncidium deuterorupestris [Docha Neto] in ed. Brazil

9. Oncidium edmundoi Pabst 1972 Brazil

10. Oncidium flexuosum C.Loddiges 1820

11. Oncidium fuscans Rchb. f. 1878

12. Oncidium fuscopetalum (Hoehne) Garay 1974

13. Oncidium hydrophilum Barb.Rodr. 1877

14. Oncidium imitans Dressler 1997

15. Oncidium insigne (Rolfe) Christenson 2002

16. Oncidium isopterum Lindl.1837

17. Oncidium ourobranquesis [Campacci} ined. Brazil

18. Oncidium paranapiacabense Hoehne 1938 Brazil

19. Oncidium pontagrossense Campacci 1998

20. Oncidium ramosum Lindl 1837

21. Oncidium sincoranum [Campacci & Cath.] in ed.

22. Oncidium varicosum Lindl. & Paxton 1837

23. Oncidium warszewiczii Rchb.f. 1852

24. Oncidium welteri Pabst 1956